5ktq temp sensors

Huw Powell audi at humanspeakers.com
Wed Dec 12 13:13:06 PST 2007


> Ok I'm having trouble with a piece of information. Which of the  
> numerous coolant temp sensors feeds the ECU the temp signal? Theres  
> the MFTS, but that only sensds the ECU the overheat signal. Then  
> theres the after-run sensor which is obvious. Then theres the 2 teeny  
> sensors - one of top of the coolant neck on the head, the other  
> screwed in to the head itself sorta underneath the hydro-pump bracket.
> 
> I can't seem to find referances of those two smaller sensors'  
> functions. SJM has a photo that referances the one of the coolant neck  
> as the "idle temp sensor" but doesn't have any info on where it's  
> signal is delivered.

Yeah, I think that one is the ECU engine temp signal.  That's where it 
is on my 90.  It should be an NTC device, I think.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/


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