Where is the water temp sensor (not switch) located on a 1988 B3?

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Old 07-06-2010, 08:50 AM
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Default Where is the water temp sensor (not switch) located on a 1988 B3?

Good morning,
Many extra parts that came with my car when purchased. One is the water temp sensor. IT IS NOT THE SWITCH, which is larger! This unit is the smaller of the two. Looking to replace, but cant find it! No Bentley so any help would be appreciated!
Old 07-06-2010, 10:18 AM
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There is a sensor on the bottom of the radiator (that is used to turn on the electric fan) and there are two sensors on the water pump outlet on the side of the block (the top radiator hose connects to this). The black 2 pin sensor goes to the ECU and the brown 3/4 pin sensor goes to your dash display and another control unit.

Hope this helps.
Old 07-06-2010, 11:22 AM
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Thanks for the help, the one that closely matches the one that I have is the top one, only diference is the connector color. Instead of black, its white. Everything else is the exact same copy. Will this make a difference???
Old 07-06-2010, 05:30 PM
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Update:
Pulled the sensor in question and the thread is much thinner. I checked pn#s on both and they are different! So I guess the PO had ordered the wrong part number or my sensor goes somewhere else! Anyway, you are absolutely correct. I found all three switches. So far it looks like I only have a replacement for one of them. All are fairly easy to get too, with the exception of the one that I have...

Thanks xblackx!

Last edited by bronxnativ; 07-06-2010 at 05:34 PM.
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