High speed test: short the two wires together in the temperature sensor mounted
front top of the head. That sensor has three wires connected, a single pin
connector and a two-pin connector.
--
Max Dillon
Charleston SC
'87 300TD
'95 E300
On July 20, 2015 3:58:33 PM EDT, WILTON via Mercedes
There is also a low speed test, don't remember off the top of my head, but IIRC
there is a relay in the back of the fuse box, short the appropriate pins to
make the fan run on low speed.
--
Max Dillon
Charleston SC
'87 300TD
'95 E300
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Low speed switch is on the AC receiver/dryer, I think the ones with
the long pigtail (the other is the low pressure switch). With ignition
on, shorting the two wires will cause the fan to run at low speed.
You can test the fan (sans relays and resistor) by connecting the two
leads at the
There is probably a fuse on the low speed relay that often blows. It's in
the second half of the fuse box that you have to uncover by removing some
screws.
At least, this was the case in my 95 124.
Jaime
On Sunday, August 24, 2014, Kaleb C. Striplin via Mercedes
mercedes@okiebenz.com wrote:
The resistor (for low speed) is shot. It's by the receiver/dryer,
most likely it's cracked. Common failure. Might just be broken or
corroded wires, and it's possible the connection in the fuse box came
apart, but not terribly likely.
Peter
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I replaced the one on my 95 but that ended up not being the problem, so
that one should be good except I cant find it!
On 8/24/2014 1:57 PM, Peter Frederick wrote:
The resistor (for low speed) is shot. It's by the receiver/dryer,
most likely it's cracked. Common failure. Might just be
