temp warning question

Phil Rose pjrose at frontiernet.net
Sat Feb 28 17:00:21 EST 2004

At 11:54 AM -0500 2/28/04, feelstranger wrote:
>Can the MFTS signal an overheat danger signal even if the temp gauge 
>shows low temp and the actual temp is likely low?

That's a common failure mode for the MFTS. If it happens, it means 
you also have lost much turbo boost as well as  your A/C. Check the 
maximum boost and you'll probably see no more than about 1.4 bar. 
Also no A/C operation. Remove MFTS connector and both will be 
restored. Replacement MFTS about $40--available from many vendors.

>is it possible for a thermostat to fail closed ...?

Yes, but temp gauge ought to show this--does it? Failed MFTS will 
still produce a normal temp reading (or low temp, depending on 
whether or not you have the 3-pin type).


Phil Rose				Rochester, NY USA
'91 200q	(140K, Lago blue)
'91 200q   (64K, Tornado red)			mailto:pjrose at frontiernet.net

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