Jim Cathey wrote:
Form an engineering standpoint, there is no reason a 126
relay should outlive a 123 relay, unless internal components were all
replaced with ones with a much higher MTBF. The 123 relays are known
to
fail. Any relay will cycle so many times, then fail.
I will bet money (
fail. I tend to pitch electrical components and get another one. I
don't
own a range of soldering irons and equipment appropriate for
electronics. I don't do Automatic trans either. Just choices I have
made.
I have one soldering iron, I've had it since I was in high school.
I must admit tha
You have done a lot more autopsies of electrical components than I.I
believe you would win the bet. Cycle related or age related, components
fail, and from the experience of the group with cruise control, solder
joints are always a prime suspect. Whatever the mode of failure, things
fail.
Form an engineering standpoint, there is no reason a 126
relay should outlive a 123 relay, unless internal components were all
replaced with ones with a much higher MTBF. The 123 relays are known
to
fail. Any relay will cycle so many times, then fail.
I will bet money (not much!) that mos
Yes, I figured out that was for a 123, but it gave me the filename of what
I was looking for. I found that on the 126 CD, but it didn't get into
troubleshooting the sensors that feed input to the Klima relay. Turns out,
I didn't need to go that far. Thankfully!
Many thanks, Marshall, Bruce a
Marshall must be very lucky, or lead a charmed life, or something. The
Klima relays never fail on his cars. I swapped the klima from my other SDL
and everything works as it should. The Relay from the 87 SDL was a
replacement, and it was dated 1998, so it has obviouly been
replaced.. That SD
Loren Faeth wrote:
At 06:52 PM 4/19/2006, you wrote:
You need to run the diagnostics outlined in the 126 HVAC manual.
Herr Doktor, is this part of the 126 cd set, or is it a separate item? If
it is on the CD, could you tell me the filename.
W126/w126CD2/Program/Climate/1986.pdf
W126/w126C
Loren Faeth wrote:
This weekend I will borrow the Klima relay off the other SDL and plug it
in. That seems easier than trying to test the myriad of sensors and
switches that control when the compressor is on. (input to the Klima
relay) I can't think that the relays are enormously more robus
This weekend I will borrow the Klima relay off the other SDL and plug it
in. That seems easier than trying to test the myriad of sensors and
switches that control when the compressor is on. (input to the Klima
relay) I can't think that the relays are enormously more robust than the
123 Klim
Thanks, that is on my cds after all. I just didn't know what I was looking
for. I have trouble getting the index to work right sometimes, so I will
often try to figure out the group number and start opening the pdfs until I
find what I need.
At 09:34 PM 4/20/2006, you wrote:
Here it is agai
Here it is again, Loren:
http://skinnerbox.steaky.org/Service/W123/w123CD2/Program/Climate/83-601a.pdf
Good Luck,
Bruce
Loren Faeth <[EMAIL PROTECTED]> wrote: A few months ago, someone posted a link
to a troubleshooting guide for the
ACC. I have been searching around, but can
At 06:52 PM 4/19/2006, you wrote:
You need to run the diagnostics outlined in the 126 HVAC manual.
Herr Doktor, is this part of the 126 cd set, or is it a separate item? If
it is on the CD, could you tell me the filename.
Loren
86 SDL and more
All the control components are still suspect, including the klima relay.
Here is the update form today:
Jumped pins 5-7 in the klima relay socket, per Marshall. Compressor
works. Output air in vents only cooled to about 58 so I am guessing that
it is low on refrigerant also. I am thinking ab
I have seen SEVERAL bad KLIMA relays, or maybe I have just had back luck.
Marshall Booth wrote:
Loren Faeth wrote:
Looks like there is a compressor control relay, N8. I don't see it in the
component location diagrams. I guess it is similar to the 123 300D Klima
relay. Now if I can find it
Its between the 2 firewalls, toward the drivers side. Black relay, says
klima on the top.
Loren Faeth wrote:
Looks like there is a compressor control relay, N8. I don't see it in the
component location diagrams. I guess it is similar to the 123 300D Klima
relay. Now if I can find it. Loo
I could not get it to hold up the 1 inch square. I have not checked
the
top end, because i found the compressor not working. I have never had
this
style light switch panel apart, and i am afraid of breaking plastic if
I
don't figure out how to take it off the right way. I will see if I
can g
Jim,
I could not get it to hold up the 1 inch square. I have not checked the
top end, because i found the compressor not working. I have never had this
style light switch panel apart, and i am afraid of breaking plastic if I
don't figure out how to take it off the right way. I will see if I
Loren Faeth wrote:
Thanks Herr Doktor,
I wanted to find the Klima relay because it showed terminal 7 running to
the clutch. Turns out it is easy to find under the hood, just difficult to
locate using the CD. It is right behind the shield, just left of
center. Most of the letters are worn o
Thanks Herr Doktor,
I wanted to find the Klima relay because it showed terminal 7 running to
the clutch. Turns out it is easy to find under the hood, just difficult to
locate using the CD. It is right behind the shield, just left of
center. Most of the letters are worn off, on mine, but i c
Ok, the aspirator motor is fine. THe rubber hose has deteriorated to
the
point it showws checking. on the outside at the motor end, but it does
not
seem to be broken through. More confusing obfuscation.
So does it hold up a tissue square or not? Is the other end of the
hose plugged in to th
Loren Faeth wrote:
Looks like there is a compressor control relay, N8. I don't see it in the
component location diagrams. I guess it is similar to the 123 300D Klima
relay. Now if I can find it. Looks like i might have a bad clutch or a
bad relay or something else yet that is an input to th
Looks like there is a compressor control relay, N8. I don't see it in the
component location diagrams. I guess it is similar to the 123 300D Klima
relay. Now if I can find it. Looks like i might have a bad clutch or a
bad relay or something else yet that is an input to the compressor
relay.
I found an obvious problem. I put a jumper on the switch at the drier and
the compressor clutch is not engaging. It is not that warm today, so I
jumped the switch to be sure the compressor will engage. Next I guess is
trying to trace the wiring on the CD after I find the right pdf
86 SDL
A
Ok, the aspirator motor is fine. THe rubber hose has deteriorated to the
point it showws checking. on the outside at the motor end, but it does not
seem to be broken through. More confusing obfuscation.
Fuses are ok.
86 SDL
At 04:42 PM 4/19/2006, you wrote:
> Ok, One more clue. Turned the
Well now, here is a real dumb question: Wouldn't the aspirator fan and
associated controls be bypassed if you set the controls to manual AC?
What manual AC? The MIN and MAX settings _are_ the bypass of all
temperature regulation. If they both work as they should, then
maybe you have an aspirat
Ok, One more clue. Turned the fan to auto, the PB to EC, and let it
stabilize. After the blower slowed down, I put a 1 x 1 square of
kleenex
over the louvers in front of the sunroof switch. That is the only
thing I
can find on the roof that looks like an air intake. The kleenex falls
down
u
Jim Cathey wrote:
Is that pretty much true for the W201 as well?
I don't know much about the 201 (yet). Ours isn't that far
along! But I expect it to be substantially the same. I know
the monovalve is different, as is the PB array and fan control,
but still...
There is NO monovalve on the
Ok, One more clue. Turned the fan to auto, the PB to EC, and let it
stabilize. After the blower slowed down, I put a 1 x 1 square of kleenex
over the louvers in front of the sunroof switch. That is the only thing I
can find on the roof that looks like an air intake. The kleenex falls down
u
Well now, here is a real dumb question: Wouldn't the aspirator fan and
associated controls be bypassed if you set the controls to manual AC?
On 4/19/06, Jim Cathey <[EMAIL PROTECTED]> wrote:
> > Is that pretty much true for the W201 as well?
>
> I don't know much about the 201 (yet). Ours isn't t
Is that pretty much true for the W201 as well?
I don't know much about the 201 (yet). Ours isn't that far
along! But I expect it to be substantially the same. I know
the monovalve is different, as is the PB array and fan control,
but still...
-- Jim
On Apr 19, 2006, at 9:39 AM, Curt Raymond wrote:
Is that pretty much true for the W201 as well?
201s do use the aspirator pump.
Johnny B.
I Mac Therefore I am
sure if is caused by the booger
wiring the PO thoughtfully gave me or something more sinister.
-Curt
'85 190D 238kmi
Date: Tue, 18 Apr 2006 19:58:52 -0700
From: Jim Cathey <[EMAIL PROTECTED]>
Subject: Re: [MBZ] pushbutton ACC troubleshooting
To: Mercedes Discussion L
On 4/18/06, Loren Faeth <[EMAIL PROTECTED]> wrote:
>
> I will have to check the aspirator fan. My guess is that it is long
> dead. Does the temp sensor live behind the glovebox also, or is it behind
> the center of the dash as in a 123?
>
If a 126 is anything like a 124, the temp sensor is in th
this topic of discussion partially applies to my recent post, I missed it
until I was archiving my emails. Sorry for the duplication. I eaagerly
await your responses to these topics.
Thanks!
Rory Morrison
Oroville, WA
1985 300SD
1982 300TD
Yes, because the heat shuts off when the off button is pushed, I am pretty
sure it is not the monovalve. (besides, it was replaced recently)
I will have to check the aspirator fan. My guess is that it is long
dead. Does the temp sensor live behind the glovebox also, or is it behind
the cent
I'll have to check that. I know on Min it blows hot air. It is
possible
MIN and MAX are supposed to bypass the temperature sensor and setting
logic, so if they don't have an effect it's not something like the
aspirator fan, or the thermistors. It'll be a more basic internal
flaw, such as a ba
I'll have to check that. I know on Min it blows hot air. It is possible
the compressor or clutch crapped out, but there was no noise or belt
squealing. I think on Max it puts out max heat.
There is an aspirator fan that is separate from the regular blower fan?
At 09:30 PM 4/18/2006, you wro
86 SDL Symptoms:
AC quit blowing cold abruptly last fall. I don't think the control is
turning on the compressor.
Heat is full on (4 left buttons) or off (O button).
Fan speed works normally in all 3 positions.
THe 5 pushbuttons seem to work normally
Does it respond to MIN and MAX? If so, is y
A few months ago, someone posted a link to a troubleshooting guide for the
ACC. I have been searching around, but can't find anything. Is there
anyone who remembers this posting and could direct me to it. This is for
the pushbutton system with the temp wheel on the left and the fan speed 3
p
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