20 Most Recent 1999 Pontiac Grand Am GT - Page 7 Questions & Answers

the most common cause is a leaking intake or head gasket

Code 302 means cylinder 2 is not producing power. it could be something mechanical, no spark, or no fuel.

Make sure you're using the recommended spark plugs. When my car did that, I had put Bosch Platinum Plus-4 plugs in and got that same problem. Turns out the plugs are too hot and cause it to fire prematurely and kick the misfire code.

I would say you have broken a con rod and may be your block, you may need to replace your complete engine

Check the heater AC 10 amp fuse and also one marked LH headlamp 15 amp,(underhood fusebox) if these are both good I suspect the body control computer may have been damaged. Should have full time power at one terminal and key on power at another (at the drl relay) I would also check at the starter main power feed and make sure a fusible link hasn't burned. All I can think of.

run fault codes and look for a sensor that is putting the engine in limp mode.

the pump only runs shortly when the engine is not running. does the car start and run

transmission control selonoid

need to take it to transmission shop, sounds like the fluid leak