My grand prix sat for two and a half years. I changed all plugs, air filter and oil, but I am only getting not even 200 kms to a tank of gas. The message center reads 12 mile to the gallon if I'm lucky. I've used fuel injector cleaner, but not helping, could it be a plugged fuel filter. What could I do. Car runs great, all the power there, just no fuel economy.
I also had a problem with security system. It would let me start car for 3 seconds and then die. (Over and over). I checked all fuses ( all good), discconected battery for an hour, now I am able to drive car, but security word keeps flashing on dash.
Can somebody please give me some ideas.
Thanxs for your time.
have the same problem?
Wednesday, January 7th, 2009 AT 7:57 PM