Could it be that I'm the only one on this forum with not one but TWO bad evaporator temperature sensors?

According to PO, my 86 300SDL has a bad one (though I haven't experienced the symptom).

On my 92 300D I think I may have a bad one...though I'm still thinking through possibilities.

How do I access it? What's involved in replacing it?

Thanks.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 158k miles
06 E320 CDI "Rutherford", Black on Tan, 177k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 72k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

That is one of the only A/C related switches that I have not replaced. From the description it sounds like it is in front of the evaporator, which is not very accessible. Maybe it is accessible from the glove box if you have one on the '92. I can't recall when the passenger air bag became standard.

This is the E.T.R. sensor which senses the cabin air temperature at the evaporator. 1 per car. Limited availability.

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

I don't have the air bag so maybe I could get to it.

__________________
14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 158k miles
06 E320 CDI "Rutherford", Black on Tan, 177k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 72k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Maybe this is where it is on the 92 (assuming all 124s are the same):

http://w124-zone.com/downloads/MB%20CD/W124/w124CD1/Program/Climate/83-646.pdf

__________________
14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 158k miles
06 E320 CDI "Rutherford", Black on Tan, 177k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 72k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Well that seems like it should be pretty easy. I just replaced my evaporator drains, had I known that was where it was I would have taken a picture.

How much is a new one?

BTW, what are you symptoms that make you think you need new ones? Other than BC telling you that you do.

__________________
1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

$125 for a new one. On the SDL, it's BC telling me (I haven't yet experienced any symptoms). On the 92 300D, I've measured vent temps as low as 35F and, after driving for two hours or so, it doesn't cool nearly as well. So it sounds like the ETS is the culprit...but I'm open to other suggestions.

__________________
14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 158k miles
06 E320 CDI "Rutherford", Black on Tan, 177k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 72k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

The symptom is 28°F. vent temperature.

This would be "other than BC telling you that you do".

I believe it's accessible from the driver's side footwell.