1999 Grand am GT Engine Running Rich. [Archive] - GrandAmGT.com Forum


View Full Version : 1999 Grand am GT Engine Running Rich.

01-30-2012, 09:09 AM
Hi I posted a previous thread and i know now that my engine is running rich.

When you start the engine it shakes and it stays idling at 1000 RPM mark sometimes it moves down to 900 and bounces a bit.

the engine is a 3.4 v6 Grand AM GT Coupe. Engine has 35,000 miles on it.
Spark plugs everything is new.

What could be wrong.

o2 sensors have never been replaced.

What could be wrong ?

just a recap, I just took of the MAF and the little metal rails inside were dirty, I cleaned them very carefully with alcohol and q tips.

cleaned the iat too. and the car still runs bad.