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Old 07-09-2002, 05:10 PM
okc329 okc329 is offline
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Join Date: Feb 2002
Location: St. Louis, MO
Posts: 340
Coolant Temperature Sensor on ' 97 M104

Excuse me for entering this querry again, but I would like to look at the coolant sensor on my '97 E320 to satisfy myself that its wired correctly and functioning as designed. The reason for this is that my car runs better when its fully warmed up than when its cold and I assume the engine management system uses coolant temperature as a prime operating input. Somebody responded to a previous question about location by saying it's on the rear of the block. Well, I can't see it from the top. Do you have to go at it from underneath? I think there is a single wire sensor on the thermostat housing for the guage but there must be another on somewhere.
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