Before I run out and get a new cold-start valve...
Huw Powell
audi at humanspeakers.com
Fri Dec 14 12:05:12 PST 2007
> 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/
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