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1993 945T rough idle 900 1993

posted by  olyh01 on  Tue May 13 06:55 CST 2003
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last visit: Fri Jul 12 09:22 CST 2013
[RELATED]

Recently the car started idling unevenly. Higher RPM performance doesn't
seem to be affected much, gas mileage is normal. OBD code indicates 1-1-1
but I haven't been able to pull diagnostic codes yet (not entirely clear
how exactly to do that - probably a separate query post.)

The symptom is, right after cold start, idle is fine, or less bad.
Once the engine warms up the idle is bad, with in gear RPM around 700.
It sounds as if there are some misses, I can hear puff, puff, and the car
shakes lightly corresponding to this stumbling. I tried to rev the engine
up and found the uneven idle would disappear at around 1500RPM.

I will appreciate any advices on how to approach diagnosing and fixing
this problem.

Much TIA,
Lih-Yen






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New 1993 945T rough idle [900][1993]
posted by  olyh01  on Tue May 13 06:55 CST 2003 >


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