06-15-2010, 10:48 PM
Is it first downstream o2 then you better get that fixed, and that is probably your issue, I had similar issues over the years attributed to:
- Vac Leak (do you have boost/vac gauge at idle you should see 15-20hg)
- Dirty Maf
- Exhaust leaks before/around o2 sensor
- Faulty o2 sensor
- Early Version Lightweight flywheels. I had a FS lightweight flywheel, even randy couldn't get my car not to stall the drag from the s/c and the lightweight couldn't keep the revs from dropping too fast when it was cold.
Others can maybe add to this list for you.
- Vac Leak (do you have boost/vac gauge at idle you should see 15-20hg)
- Dirty Maf
- Exhaust leaks before/around o2 sensor
- Faulty o2 sensor
- Early Version Lightweight flywheels. I had a FS lightweight flywheel, even randy couldn't get my car not to stall the drag from the s/c and the lightweight couldn't keep the revs from dropping too fast when it was cold.
Others can maybe add to this list for you.