What is causing idle issue on 1995 olds cutlas ciera 3.1 v6.
I have a 1995 olds cutlass ciera 3.1 v6. I am having problems with idle in
park and in drive at stoplight. Rpms sound like they drop to about 500rpms
and then pick back up. Also getting a lurch at times while backing up. No
check engine light and no vacuum leaks. Done smoke test on car and no
vacuum leaks. Seems like a sensor of some kind, just don't know which
one. Any help would be greatly appreciated.
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