[200q20v] Problems with CC/performance
pjrose at frontiernet.net
Fri Aug 3 18:23:11 EDT 2001
At 1:38 PM -0400 8/3/01, Gronberg wrote:
> There is one major problem with my car that I would like to fix. Right
>car runs and performs fine when my climate control is turned OFF. however,
>turn it on (esp. the A/C), the idle becomes rough, the car accelerates
>it will sometimes lurch when driving (almost feels like a fuel cut) it
>under acceleration or constant throttle (ie cruise control on a flat
>road.) has anyone else experienced this before? any ideas?
The A/C "rough idle" symptom sounds like the ISV might be faulty. Try
this: idle car with A/C turned on; then unplug the ISV electrical connector
and see if the idle speed drops significantly--it should. Check that the
ISV hoses are tight, etc.
A bad oxy sensor might cause surging at constant throttle, but that should
tend to be independent of using the A/C.
Phil Rose Rochester, NY
'91 200q mailto:pjrose at frontiernet.net
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