more on coolant temp sens. t44

[Huw Powell]

> >From what I gather on sjm's site, the sensor that is likely flakin' out on
> me (the one with issues) is A coolant temp sensor. However, the paragraph
> layout on his page is con-fyu-zing. I can't tell where he's talking about
> the one for the ISV and the one for the engine coolant--the topic seems to
> go back n' forth:
>
> http://www.sjmautotechnik.com/10vcoolt.html#coolt
>
> I THINK that given my cold idling/running issues (there's that word again),
> it's actually the ECU coolant temp sensor..? Once warm, it idles fine.
>
> Anyhow, the part# listed on his site is 049-919-501. Is this still valid?

What he is showing are two identical senders with separat but similar
functions, so it really does not matter which one he is talking about.
Not sure why the car would be set up that way, but it is.  The one to
the front would affect fuel mixture, basically, and the upper one, in
the coolant neck, appears to be for setting the ISV duty cycle, perhaps
just as a baseline, since the ECU can fine tune the ISV based on engine
rpm.

--
Huw Powell

http://www.humanspeakers.com/

http://www.humanthoughts.org/