When engine warm, there is still vapor coming out of exhaust. have a leak in cooling system,can not find it. no sign of water in oil.
If no fluid ifs being lost,it may be o2 sensor.Does car have any kind of skip?
Your engine coolant keeps getting low and you have to add more. If so possible head gasket issue.
http://troubleshootmyvehicle.com/gm/3.1L-3.4L/blown-head-gasket-test- 1 -- check this out
www.youtube.com/watch?v=NlT8U8D5vwQ -- is this what yours is doing? If so blown head gasket.
Looking for a Used Grand Am in your area?
CarGurus has 1,217 nationwide Grand Am listings starting at $1,999.
Search Pontiac Grand Am Questions
Pontiac Grand Am Experts
Related Models For Sale