Hey Larry hope your doing well. I talked with Wilton the other day, he and his
wife are doing well.
I think Curly finally replaced the t-stat as well as some other stuff, he
should update us again.
Max Dillon
Charleston SC
Apr 9, 2020 2:24:11 PM Larry Turner via Mercedes :
> Hello All -
>
Hello All -
Back when I had the car, I replaced the Rad when the upper nozzle
broke. At that time I cleaned between the rad & the condensor so that
should still be clean.
One thing about the T'Stat - 1st one I bought was right catalog # but it
was too small (or vice versa) so I got the
The 201 chassis is the only place I've seen electric fan clutches on MBs.
On Sun, Mar 15, 2020 at 6:54 PM Curt Raymond via Mercedes <
mercedes@okiebenz.com> wrote:
> Interesting, yours is a 602 NA?Mine were both 601 and both were electric.
> -Curt
>
> On Saturday, March 14, 2020, 4:38:06 PM
> Interesting, yours is a 602 NA?
> Mine were both 601 and both were electric.
Yes. OM602 NA, visco-fan.
-- Jim
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Interesting, yours is a 602 NA?Mine were both 601 and both were electric.
-Curt
On Saturday, March 14, 2020, 4:38:06 PM EDT, Jim Cathey via Mercedes
wrote:
> The 190 had an electric clutch if I remember correctly, while the W124 has
> a viscous clutch.
W201's vary. Ours (diesel)
thanks Dan.
Dan Penoff via Mercedes wrote on 3/14/20 5:03 PM:
Here’s a BW thread about using a resistor to lower the resistance of the sensor
on the block:
https://www.benzworld.org/threads/auxillary-fan-turn-on-set-point-resistor-modification.1629476/
It’s kind of convoluted reading, but I
Here’s a BW thread about using a resistor to lower the resistance of the sensor
on the block:
https://www.benzworld.org/threads/auxillary-fan-turn-on-set-point-resistor-modification.1629476/
It’s kind of convoluted reading, but I seem to recall using a couple of 2.2k
ohm resistors in parallel
Found relays K9 and K10. pulled them out, and when I put one (k10) in I
had low speed! Put the other in and had high speed! (Dryer switch
jumped and top sensor unplugged.)
With both relays back in , I plugged in the top sensor, and the dryer
switch and went for a drive. all ok for a
Even though this wiring diagram says it is for 93 and later, I think it
will work for your car for the aux fan circuits.
-
Max
Charleston SC
On Sat, Mar 14, 2020 at 5:24 PM Meade Dillon wrote:
> There are two relays: K9, which operates the high speed function of the
> aux fans, and
There are two relays: K9, which operates the high speed function of the aux
fans, and K10 which is for the low speed function (low speed circuit goes
through a big resistor to drop the voltage). K9 is in position C in the
fuse box, K10 is position B in the fuse box.
High speed circuit: Test by
> The 190 had an electric clutch if I remember correctly, while the W124 has a
> viscous clutch.
W201's vary. Ours (diesel) has a visco-clutch.
-- Jim
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I think that low speed fan circuit has a big resistor between the ABS pump and
the fender. If that resistor is open circuit, no fan operation. Had that on my
'87.
Max Dillon
Charleston SC
Mar 14, 2020 3:42:46 PM Curley McLain via Mercedes :
> Done that. it has no effect whatsoever. (indicates
Done that. it has no effect whatsoever. (indicates electrical problem,
not mechanical)
Craig via Mercedes wrote on 3/14/20 2:30 PM:
otherwise, the next fix is to put a manual switch on the fans or wire
them to run whenever the key is on.
You can do that by shorting the terminals at the
On Sat, 14 Mar 2020 13:52:28 -0500 Curley McLain via Mercedes
wrote:
> I do not see any way to take off/take out the front shroud and fans,
> other than removing radiator, condensor etc. Trying to avoid that for
> now.
For sure, you do not have to remove the condenser. IIRC, you also do not
yep got that.
Craig via Mercedes wrote on 3/14/20 12:39 PM:
On Fri, 13 Mar 2020 19:26:04 -0500 Curley McLain via Mercedes
wrote:
I think in some prior discussion I remember that the )M60x has 2 fan
switches. Apparently they are in parallel. Anyone know if or where
this other switch could
Ok, here is the latest.
Top sensor, 2 pin, at the top of the head, next to 1 pin temp sensor
(coolant exit to radiator)
5,000 ohm resistance, cold between the 2 pins
Blue/white wire: 5 v
brown wire 0 volts
Dryer fan switch
Infinite resistance cold = open circuit
Brown/Blue wire 12v
brown
Correct
Sent from my iPhone
> On Mar 14, 2020, at 12:17 PM, Peter Frederick via Mercedes
> wrote:
>
> The 190 had an electric clutch if I remember correctly, while the W124 has a
> viscous clutch.
> ___
> http://www.okiebenz.com
>
> To search list
The 190 had an electric clutch if I remember correctly, while the W124 has a
viscous clutch.
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>Are you sure the fan clutch kicks on at 80?
In my 190e 2.6 it is supposed to come on at 100c or 105c, but not 80c. There is
a resistor mod you can do at the temp sensor connector that can lower it
(assuming they are similarly set up). Dan posted on that years ago when he had
the 140 coupe.
Yes overheating in my 90 300D 2.5t (now Dimitri's) was cured by a new fan
clutch.
Dwight E. Giles Jr.
Wickford RI
On Sat, Mar 14, 2020 at 11:39 AM Curt Raymond via Mercedes <
mercedes@okiebenz.com> wrote:
> If the engine fan is working and its 75F and its overheating you've got
> some other
Roughly 80C at the fan clutch I think. Might be a bit warmer, but well below
"overheat" on the temp gauge.
I think I've replaced three over the years.
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80C at the fan itself though right? I was under the impression that the
viscous fan clutch requires itself to get hot to operate.
-Curt
On Saturday, March 14, 2020, 10:43:59 AM EDT, Kaleb Striplin via Mercedes
wrote:
Are you sure the fan clutch kicks on at 80? I thought the
If the engine fan is working and its 75F and its overheating you've got some
other problem(s). The aux fans should be unneeded in those conditions.
I agree that a thermostat would be one of my first things to test. The car has
sat awhile no? I'd probably swap the coolant too.
Angie's Golf had a
On that engine, the t-stat starts to open at 85. They run a little hotter than
earlier engines.
Max Dillon
Charleston SC
Mar 14, 2020 10:43:59 AM Kaleb Striplin via Mercedes :
> Are you sure the fan clutch kicks on at 80? I thought the thermostat didn’t
> even start opening till 80 or so and
Are you sure the fan clutch kicks on at 80? I thought the thermostat didn’t
even start opening till 80 or so and was not fully opened till warmer than
that.
Sent from my iPhone
> On Mar 14, 2020, at 9:02 AM, Peter Frederick via Mercedes
> wrote:
>
> The fan clutch kicks in around 80C and
And aftermarket viscous fan clutches are notoriously poor quality and rarely in
spec. I had some success in refilling them, which is pretty simple to do. Over
time the oil leaks out and they start acting up.
-D
> On Mar 14, 2020, at 10:02 AM, Peter Frederick via Mercedes
> wrote:
>
> The
The fan clutch kicks in around 80C and should keep you at normal operating temp
unless you have the AC on, in which case as long as there is high temperature
on the high pressure side of the compressor the fans will run at low speed.
They should NOT be on in normal driving.
You have a bad fan
Switches are in the hot side line -- receiver/dryer switch wire goes to a
resistor located close by, the engine switch wire goes to the 'far' side of the
same resistor for full fan speed.
If the hot side is hot, you have a bad ground. I'm guessing it's in the same
general area as the
Curley, I've got three of these cars, '87 with OM603 and two '95's with
OM606NA. None of them need the aux fan running in the summer heat, unless
the AC is running or I'm carrying a big load or running fast on the highway
up hill and then suddenly slow down.
Just driving around town at 75 deg F,
Yes, the belt driven fan is whirring away nicely, otherwise, it would be
dead in the water in about 200 yards. (or suffer an engine meltdown if
you didn't stop) It keeps the temp from getting abouve ~105º C.
This one is different in that the front of the radiator is blocked by a
front
Stupid question. Is the fan clutch working?
You would be amazed at the difference a working vs. non-working fan clutch can
make. Most folks think that above 30 mph, the fan has no impact, but I can tell
you with first hand experience, that is not true.
Rick
because the problem is not the thermostat. On this one, the radiator is
blocked by a shroud, except for where the 2 fans are. I'm guessing that
is to keep bugs out of the radiator. So without the fans running, it
runs too hot. when the fans run it is fine. Larry put a new
thermostat in
Why don't you replace the thermostat?
If you dig into the FSM for the HVAC system, it will have the test
procedures for both low and high cooling fan operation. Section 83 I
believe.
-
Max
Charleston SC
On Fri, Mar 13, 2020 at 8:26 PM Curley McLain via Mercedes <
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