Re: [MBZ] 1986 300E Ignition Resistor?
Good stuff! Thanks Peter! Even though I don't have a vergasser, I might again sometime in the future. Other than the M116, I have been fortunate enough to get rid of them before I had to do major work. Peter Frederick via Mercedes wrote: Cuts out and backfires could easily be an over-rich condition, too. Or bad plug wires. Or a leaking airflow sensor to throttle body leak. Your symptoms tell me that the system cannot manage the fuel mixture when it comes out of cold running open loop mode. When it goes into feedback loop mode, the mixture goes way over rich or way over lean and the engine dies. I've fished around on these systems for a long time (since 1980), they have to be vacuum leak free, the charcoal cartridge for the vapor recovery system has to be in good shape, the fuel pumps have to be right with a good fuel filter, and the airflow meter must be clean and moving properly. You must also have a good fuel distributor plunger seal (or fuel drips into the intake) and good injectors. Great system when it works, but it can take a while to get it right when it acts up. I would do the following: Check for intact fuel injector seals, both on the injector and on the plastic insert they sit in. Check for leaking or split idle control valve hoses. Check for leaks on the boot between the fuel distributor/air meter and the throttle body, they shrink and crack with age. Verify a clear exhaust. Check the oxygen sensor (a prime suspect, actually, since it acts like it's going out of control in closed loop mode). Check the connector for the oxygen sensor under the right front carpet -- a spilled soda or a window left open can cause liquid to collect on the plug and corrode it. It's under the secondary padding. Check fuel pressures -- if the mechanic doesn't know what you are talking about, you need a different mechanic, he's just fishing in the dark. Base pressure, upper and lower chamber pressures, differential drop across the fuel distributor. Check the electrohydraulic regulator on the rear of the fuel distributor, they leak when they are bad. Will also not control differential pressure properly. Make sure it's plugged in Mine stalled and backfired while trying to start it when I had a bad fuel pump -- on the TE they are in series so one bad makes it refuse to run.. Sedans are in parallel. Check for a clogged or smashed fuel line -- will show up as low fuel pressure. Make sure the charcoal canister vent is not clogged -- it's the right size for a mud dauber to build a nest in. Will result in serious suction on the tank as there will be no air vent. Also verify that the canister is not fuel soaked, as it is cleared when the engine warms up. Sucking liquid gasoline down the intake from a flooded canister will stall it. Peter ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Cuts out and backfires could easily be an over-rich condition, too. Or bad plug wires. Or a leaking airflow sensor to throttle body leak. Your symptoms tell me that the system cannot manage the fuel mixture when it comes out of cold running open loop mode. When it goes into feedback loop mode, the mixture goes way over rich or way over lean and the engine dies. I've fished around on these systems for a long time (since 1980), they have to be vacuum leak free, the charcoal cartridge for the vapor recovery system has to be in good shape, the fuel pumps have to be right with a good fuel filter, and the airflow meter must be clean and moving properly. You must also have a good fuel distributor plunger seal (or fuel drips into the intake) and good injectors. Great system when it works, but it can take a while to get it right when it acts up. I would do the following: Check for intact fuel injector seals, both on the injector and on the plastic insert they sit in. Check for leaking or split idle control valve hoses. Check for leaks on the boot between the fuel distributor/air meter and the throttle body, they shrink and crack with age. Verify a clear exhaust. Check the oxygen sensor (a prime suspect, actually, since it acts like it's going out of control in closed loop mode). Check the connector for the oxygen sensor under the right front carpet -- a spilled soda or a window left open can cause liquid to collect on the plug and corrode it. It's under the secondary padding. Check fuel pressures -- if the mechanic doesn't know what you are talking about, you need a different mechanic, he's just fishing in the dark. Base pressure, upper and lower chamber pressures, differential drop across the fuel distributor. Check the electrohydraulic regulator on the rear of the fuel distributor, they leak when they are bad. Will also not control differential pressure properly. Make sure it's plugged in Mine stalled and backfired while trying to start it when I had a bad fuel pump -- on the TE they are in series so one bad makes it refuse to run.. Sedans are in parallel. Check for a clogged or smashed fuel line -- will show up as low fuel pressure. Make sure the charcoal canister vent is not clogged -- it's the right size for a mud dauber to build a nest in. Will result in serious suction on the tank as there will be no air vent. Also verify that the canister is not fuel soaked, as it is cleared when the engine warms up. Sucking liquid gasoline down the intake from a flooded canister will stall it. Peter ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Is your mechanic familiar with KE-Jet injection? It's mechanical, not electronic except for mixture control feedback. A failing electro-hydraulic regulator could do the same thing by leaking when warm. A sticking idle control valve will cause stalling when coasting to a stop. Lots of possibilities. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
On 11/07/2018 10:02 PM, M. Mitchell Marmel via Mercedes wrote: Fuel pump is running when the engine cuts out, so it's some sort of ignition issue. :D -MMM- Or fuel delivery issue even if the pump is running or at least making noise. RB ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Also a possibility... On Thu, Jul 12, 2018 at 10:41 AM Randy Bennell via Mercedes < mercedes@okiebenz.com> wrote: > On 12/07/2018 9:26 AM, M. Mitchell Marmel via Mercedes wrote: > > Just got off the phone with the mechanic. He says it cuts out and > > backfires, so it may be the thirty-year-old catalytic converter being > > clogged up. > > > > Oxygen Sensors? > > RB > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
On 12/07/2018 9:26 AM, M. Mitchell Marmel via Mercedes wrote: Just got off the phone with the mechanic. He says it cuts out and backfires, so it may be the thirty-year-old catalytic converter being clogged up. Oxygen Sensors? RB ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Just got off the phone with the mechanic. He says it cuts out and backfires, so it may be the thirty-year-old catalytic converter being clogged up. On Thu, Jul 12, 2018 at 8:33 AM M. Mitchell Marmel wrote: > Cuts out instantly, from what my mechanic was saying. > > On Thu, Jul 12, 2018 at 8:32 AM Kaleb C. Striplin via Mercedes < > mercedes@okiebenz.com> wrote: > >> Does it cut out instantly or start running like crap then stumbles and >> dies? >> >> Sent from my iPhone >> >> > On Jul 12, 2018, at 8:21 AM, M. Mitchell Marmel via Mercedes < >> mercedes@okiebenz.com> wrote: >> > >> > Starts, runs and drives smooth for a few minutes until the temp under >> the >> > hood rises, at which point it cuts out. I'm thinking electrical. >> > >> > On Thu, Jul 12, 2018 at 7:01 AM Peter Frederick via Mercedes < >> > mercedes@okiebenz.com> wrote: >> > >> >> Not it if's barely running or rattling -- my TE would do the same thing >> >> until I replaced the relay and the bad pump. >> >> >> >> Check the fuel pressures, if not steady it's a pump or relay. >> >> ___ >> >> http://www.okiebenz.com >> >> >> >> To search list archives http://www.okiebenz.com/archive/ >> >> >> >> To Unsubscribe or change delivery options go to: >> >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> >> >> >> > ___ >> > http://www.okiebenz.com >> > >> > To search list archives http://www.okiebenz.com/archive/ >> > >> > To Unsubscribe or change delivery options go to: >> > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> > >> >> >> ___ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Cuts out instantly, from what my mechanic was saying. On Thu, Jul 12, 2018 at 8:32 AM Kaleb C. Striplin via Mercedes < mercedes@okiebenz.com> wrote: > Does it cut out instantly or start running like crap then stumbles and > dies? > > Sent from my iPhone > > > On Jul 12, 2018, at 8:21 AM, M. Mitchell Marmel via Mercedes < > mercedes@okiebenz.com> wrote: > > > > Starts, runs and drives smooth for a few minutes until the temp under the > > hood rises, at which point it cuts out. I'm thinking electrical. > > > > On Thu, Jul 12, 2018 at 7:01 AM Peter Frederick via Mercedes < > > mercedes@okiebenz.com> wrote: > > > >> Not it if's barely running or rattling -- my TE would do the same thing > >> until I replaced the relay and the bad pump. > >> > >> Check the fuel pressures, if not steady it's a pump or relay. > >> ___ > >> http://www.okiebenz.com > >> > >> To search list archives http://www.okiebenz.com/archive/ > >> > >> To Unsubscribe or change delivery options go to: > >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >> > >> > > ___ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Does it cut out instantly or start running like crap then stumbles and dies? Sent from my iPhone > On Jul 12, 2018, at 8:21 AM, M. Mitchell Marmel via Mercedes > wrote: > > Starts, runs and drives smooth for a few minutes until the temp under the > hood rises, at which point it cuts out. I'm thinking electrical. > > On Thu, Jul 12, 2018 at 7:01 AM Peter Frederick via Mercedes < > mercedes@okiebenz.com> wrote: > >> Not it if's barely running or rattling -- my TE would do the same thing >> until I replaced the relay and the bad pump. >> >> Check the fuel pressures, if not steady it's a pump or relay. >> ___ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
The coil is brand new. On Thu, Jul 12, 2018 at 6:58 AM Kaleb C. Striplin via Mercedes < mercedes@okiebenz.com> wrote: > Are you saying it got worse? I am assuming these were used parts so maybe > they are worse than what was in the car? > > Sent from my iPhone > > > On Jul 11, 2018, at 8:17 PM, M. Mitchell Marmel via Mercedes < > mercedes@okiebenz.com> wrote: > > > > Latest update: Replaced both the coil and the ignition module, and it's > > now stalling out after 5-10 minutes of operation. I'm thinking ECU, > > myself. Anybody got any W124 ECUs knocking about? :D > > > > -MMM- > > > > On Fri, Jul 6, 2018 at 4:03 PM Curley McLain via Mercedes < > > mercedes@okiebenz.com> wrote: > > > >> the coil has died in every MB vergasser i've had, except the 230TE. It > >> is a common failure. In fact, the last 2 (non MB) blew up. That is > messy! > >> > >> > >> > >> G Mann via Mercedes wrote: > >>> It's been about 45 years since I had a coil break down but I still > >> remember > >>> the symptoms. > >>> > >>> 1. Cold engine. Starts and runs normal. > >>> 2. As engine warms up, the internal temp of the coil rises and it > starts > >> to > >>> lose energy due to internal insulation being broken down. > >>> 3. This causes loss of ignition, intermittently, at first, a little > >>> "tumble" or "stagger". > >>> as the coil progresses into the full failure mode while engine heat > rises > >>> and internal coil temp rises, until the loss of internal insulation > >> allows > >>> an electrical path to short out the coil... which shuts off spark and > >>> engine dies.. > >>> 4. You coast to side of road, open hood, [which allows cool air to > engine > >>> compartment] and while you are scratching your head [or other body > part] > >> in > >>> dismay, the coil cools off just enough to make a restart and you drive > >> some > >>> more.. > >>> 5. Repeat, repeat, repeat finally, coil dies completely. > >>> > >>> Good news: A 12 volt coil is a 12 volt coil... FLAPS will have one, > maybe > >>> not the "exact one" but all it needs to work is "12 volts and a coil > wire > >>> to the distributor," and a bolt to mount the bracket. That will "get > you > >>> home" when the original dies. > >>> > >>> > >> > >> > >> ___ > >> http://www.okiebenz.com > >> > >> To search list archives http://www.okiebenz.com/archive/ > >> > >> To Unsubscribe or change delivery options go to: > >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > >> > >> > > ___ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Starts, runs and drives smooth for a few minutes until the temp under the hood rises, at which point it cuts out. I'm thinking electrical. On Thu, Jul 12, 2018 at 7:01 AM Peter Frederick via Mercedes < mercedes@okiebenz.com> wrote: > Not it if's barely running or rattling -- my TE would do the same thing > until I replaced the relay and the bad pump. > > Check the fuel pressures, if not steady it's a pump or relay. > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Not it if's barely running or rattling -- my TE would do the same thing until I replaced the relay and the bad pump. Check the fuel pressures, if not steady it's a pump or relay. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Are you saying it got worse? I am assuming these were used parts so maybe they are worse than what was in the car? Sent from my iPhone > On Jul 11, 2018, at 8:17 PM, M. Mitchell Marmel via Mercedes > wrote: > > Latest update: Replaced both the coil and the ignition module, and it's > now stalling out after 5-10 minutes of operation. I'm thinking ECU, > myself. Anybody got any W124 ECUs knocking about? :D > > -MMM- > > On Fri, Jul 6, 2018 at 4:03 PM Curley McLain via Mercedes < > mercedes@okiebenz.com> wrote: > >> the coil has died in every MB vergasser i've had, except the 230TE. It >> is a common failure. In fact, the last 2 (non MB) blew up. That is messy! >> >> >> >> G Mann via Mercedes wrote: >>> It's been about 45 years since I had a coil break down but I still >> remember >>> the symptoms. >>> >>> 1. Cold engine. Starts and runs normal. >>> 2. As engine warms up, the internal temp of the coil rises and it starts >> to >>> lose energy due to internal insulation being broken down. >>> 3. This causes loss of ignition, intermittently, at first, a little >>> "tumble" or "stagger". >>> as the coil progresses into the full failure mode while engine heat rises >>> and internal coil temp rises, until the loss of internal insulation >> allows >>> an electrical path to short out the coil... which shuts off spark and >>> engine dies.. >>> 4. You coast to side of road, open hood, [which allows cool air to engine >>> compartment] and while you are scratching your head [or other body part] >> in >>> dismay, the coil cools off just enough to make a restart and you drive >> some >>> more.. >>> 5. Repeat, repeat, repeat finally, coil dies completely. >>> >>> Good news: A 12 volt coil is a 12 volt coil... FLAPS will have one, maybe >>> not the "exact one" but all it needs to work is "12 volts and a coil wire >>> to the distributor," and a bolt to mount the bracket. That will "get you >>> home" when the original dies. >>> >>> >> >> >> ___ >> http://www.okiebenz.com >> >> To search list archives http://www.okiebenz.com/archive/ >> >> To Unsubscribe or change delivery options go to: >> http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com >> >> > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Fuel pump is running when the engine cuts out, so it's some sort of ignition issue. :D -MMM- On Wed, Jul 11, 2018 at 8:43 PM Peter Frederick via Mercedes < mercedes@okiebenz.com> wrote: > Have you replaced the fuel pump relay? > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Have you replaced the fuel pump relay? ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Latest update: Replaced both the coil and the ignition module, and it's now stalling out after 5-10 minutes of operation. I'm thinking ECU, myself. Anybody got any W124 ECUs knocking about? :D -MMM- On Fri, Jul 6, 2018 at 4:03 PM Curley McLain via Mercedes < mercedes@okiebenz.com> wrote: > the coil has died in every MB vergasser i've had, except the 230TE. It > is a common failure. In fact, the last 2 (non MB) blew up. That is messy! > > > > G Mann via Mercedes wrote: > > It's been about 45 years since I had a coil break down but I still > remember > > the symptoms. > > > > 1. Cold engine. Starts and runs normal. > > 2. As engine warms up, the internal temp of the coil rises and it starts > to > > lose energy due to internal insulation being broken down. > > 3. This causes loss of ignition, intermittently, at first, a little > > "tumble" or "stagger". > > as the coil progresses into the full failure mode while engine heat rises > > and internal coil temp rises, until the loss of internal insulation > allows > > an electrical path to short out the coil... which shuts off spark and > > engine dies.. > > 4. You coast to side of road, open hood, [which allows cool air to engine > > compartment] and while you are scratching your head [or other body part] > in > > dismay, the coil cools off just enough to make a restart and you drive > some > > more.. > > 5. Repeat, repeat, repeat finally, coil dies completely. > > > > Good news: A 12 volt coil is a 12 volt coil... FLAPS will have one, maybe > > not the "exact one" but all it needs to work is "12 volts and a coil wire > > to the distributor," and a bolt to mount the bracket. That will "get you > > home" when the original dies. > > > > > > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
the coil has died in every MB vergasser i've had, except the 230TE. It is a common failure. In fact, the last 2 (non MB) blew up. That is messy! G Mann via Mercedes wrote: It's been about 45 years since I had a coil break down but I still remember the symptoms. 1. Cold engine. Starts and runs normal. 2. As engine warms up, the internal temp of the coil rises and it starts to lose energy due to internal insulation being broken down. 3. This causes loss of ignition, intermittently, at first, a little "tumble" or "stagger". as the coil progresses into the full failure mode while engine heat rises and internal coil temp rises, until the loss of internal insulation allows an electrical path to short out the coil... which shuts off spark and engine dies.. 4. You coast to side of road, open hood, [which allows cool air to engine compartment] and while you are scratching your head [or other body part] in dismay, the coil cools off just enough to make a restart and you drive some more.. 5. Repeat, repeat, repeat finally, coil dies completely. Good news: A 12 volt coil is a 12 volt coil... FLAPS will have one, maybe not the "exact one" but all it needs to work is "12 volts and a coil wire to the distributor," and a bolt to mount the bracket. That will "get you home" when the original dies. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
It's been about 45 years since I had a coil break down but I still remember the symptoms. 1. Cold engine. Starts and runs normal. 2. As engine warms up, the internal temp of the coil rises and it starts to lose energy due to internal insulation being broken down. 3. This causes loss of ignition, intermittently, at first, a little "tumble" or "stagger". as the coil progresses into the full failure mode while engine heat rises and internal coil temp rises, until the loss of internal insulation allows an electrical path to short out the coil... which shuts off spark and engine dies.. 4. You coast to side of road, open hood, [which allows cool air to engine compartment] and while you are scratching your head [or other body part] in dismay, the coil cools off just enough to make a restart and you drive some more.. 5. Repeat, repeat, repeat finally, coil dies completely. Good news: A 12 volt coil is a 12 volt coil... FLAPS will have one, maybe not the "exact one" but all it needs to work is "12 volts and a coil wire to the distributor," and a bolt to mount the bracket. That will "get you home" when the original dies. On Fri, Jul 6, 2018 at 6:23 AM, Frederick Moir via Mercedes < mercedes@okiebenz.com> wrote: > MMM. > The picture matches what I have, though the numbers are different. > The unit that I have is from a 260E 1989. > The ignition should not be any different other than the vacuum control > profile, probably unimportant. > Address? > Fred. > > On Thu, Jul 5, 2018 at 10:31 PM, M. Mitchell Marmel via Mercedes < > mercedes@okiebenz.com> wrote: > > > Latest update: The little indefinite cut out again; this time, it had > the > > decency to do so as I was backing up the driveway. > > > > Cut off the A/C and radio and listened carefully; the fuel pump is > running > > fine, so it's something to do with the ignition. > > > > Frederick: My module has different numbers on it. A pic is attached. > > Think yours would work? > > > > ___ > > http://www.okiebenz.com > > > > To search list archives http://www.okiebenz.com/archive/ > > > > To Unsubscribe or change delivery options go to: > > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > > > > > > > -- > Fred Moir > Lynn MA > Diesel preferred > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
MMM. The picture matches what I have, though the numbers are different. The unit that I have is from a 260E 1989. The ignition should not be any different other than the vacuum control profile, probably unimportant. Address? Fred. On Thu, Jul 5, 2018 at 10:31 PM, M. Mitchell Marmel via Mercedes < mercedes@okiebenz.com> wrote: > Latest update: The little indefinite cut out again; this time, it had the > decency to do so as I was backing up the driveway. > > Cut off the A/C and radio and listened carefully; the fuel pump is running > fine, so it's something to do with the ignition. > > Frederick: My module has different numbers on it. A pic is attached. > Think yours would work? > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > > -- Fred Moir Lynn MA Diesel preferred ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Ignition analyzer. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Is there any way to test for a flaky coil? Other than replacing the coil, that is. :) On Thu, Jul 5, 2018 at 9:50 PM, Peter Frederick via Mercedes < mercedes@okiebenz.com> wrote: > Don't forget that ignition coils can be flaky, too! Single coil on that > car. > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Don't forget that ignition coils can be flaky, too! Single coil on that car. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Yes, and you still may need to replace the coil. They burn out fairly often. Once on the Dotsoon? I had a loose spade connector at the ballast resistor. M. Mitchell Marmel via Mercedes wrote: Is there such a critter, or is it part of the ignition module on the inner fender? My 300E will intermittently cut out in stop and go traffic in hot weather; when I let it cool down for a couple of minutes with the hood open, it starts and runs fine. Only does this in 90+ temps and only in stop and go; on the highway, it works fine. Suggestions? -MMM- ___ ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Fuel pump relay is behind the battery, either a separate relay or part of the relay pack, depending on year of production. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
MMM. I have a 300E ignition module that you may have for shipping. Bosch # 0 227 400 656 MBZ 006 545 73 32 6 Zyl 103 042. I have no use for it. Fred. On Sat, Jun 30, 2018 at 2:56 PM, M. Mitchell Marmel via Mercedes < mercedes@okiebenz.com> wrote: > Is there such a critter, or is it part of the ignition module on the inner > fender? My 300E will intermittently cut out in stop and go traffic in hot > weather; when I let it cool down for a couple of minutes with the hood > open, it starts and runs fine. Only does this in 90+ temps and only in > stop and go; on the highway, it works fine. > > Suggestions? > > -MMM- > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > -- Fred Moir Lynn MA Diesel preferred ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
1) Haven't checked. Will do so next time. 2) Where's the relay located? Thanks! -MMM- On Sat, Jun 30, 2018 at 2:28 PM, Mitch Haley via Mercedes < mercedes@okiebenz.com> wrote: > Can you hear the fuel pump running when it dies? > If you replace the fuel pump relay with a jumper, does the stalling cease? > Mitch. > > ___ > http://www.okiebenz.com > > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > > ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
I have had Bosch fuel pumps refuse to run properly when hot, although in the case of the sedan it would have to be both of them. On the wagon they are in series, so just one cutting out will cause stalling. The one in my Audi Fox did this to me on a long trip out west in 1980 -- would cut out once in a while hot. Eventually it failed altogether, forcing me to replace it in a parking lot. Check for fuel pump operation hot, especially for rough running, check the wiring, and replace the relay. A bad pump drawing too much current will cook the relay, so if a new relay fixes things, check the current draw on the pumps and replace if it's high or variable. Peter ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] 1986 300E Ignition Resistor?
Can you hear the fuel pump running when it dies? If you replace the fuel pump relay with a jumper, does the stalling cease? Mitch. ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
[MBZ] 1986 300E Ignition Resistor?
Is there such a critter, or is it part of the ignition module on the inner fender? My 300E will intermittently cut out in stop and go traffic in hot weather; when I let it cool down for a couple of minutes with the hood open, it starts and runs fine. Only does this in 90+ temps and only in stop and go; on the highway, it works fine. Suggestions? -MMM- ___ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
