Before I run out and get a new cold-start valve...

[Huw Powell]

> I'm looking for a sure-fire way to verify that the cold-start valve
> on my 84 4ksq is really shot.  The car does start fine in warmer
> (above about 35F) temps....below that though and it'll take ten
> minutes to start (and my battery/cabling is fine.) I just don't want
> to replace it...and then discover that it's some other
> temperature-sensitive sub-system further up (or down) stream that's
> bad.  Any BTDS's? 

That's the one thing it's most likely *not* to be.

Most likely culprit is the NTC sender on the coolant neck which tells 
the ECU the engine temperature.  It should be a few thousand ohms at 
freezing (remove and put in ice water), and under a hundred ohms near 
boiling.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/