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RE: '80 99 runs bad when cold
Posted by John Cooper (more from John Cooper) on Mon, 9 Aug 1999 11:23:37
In Reply to: '80 99 runs bad when cold, Keegan Hartman, Mon, 9 Aug 1999 09:22:30
> Our 1980 Saab 99 GL with 115K on it has been running really bad when we
system. My guess is that it's either the temporary enrichment system (idles
ok but stumbles on acceleration) or the warm up regulator in the CIS control
pressure system (runs too lean when cold) or the O2 sensor. (Tries to take
control before it's warm enough to work). With a CIS pressure gauge and
Lambda dwell meter the right person could probably pinpoint it in 30
seconds. (They'll need to see it cold, though. We used to put the
pressure gauge on the night before and run it, then let it sit overnight and
test it the next morning.)
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