rough idle IN GEAR ONLY 89 560 sel

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rough idle IN GEAR ONLY 89 560 sel

03-05-2006, 04:06 PM

jroach

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Join Date: Jan 2006

Posts: 35

rough idle IN GEAR ONLY 89 560 sel

I have searched the many posts for rough idle and can't find one that addresses rough idle in gear only.
Park and neutral is not rough but high.
ICV is fine, IC module is fine. Replaced leaking EHA, no vacuum leaks.

Mechanic said that high idle was from ICV not getting proper ground and he ran a jumper wire from harness below IC module to lower the idle, but that did not fix the rough idle in gear only.

Any help/suggestions appreciated.

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