My 99 grand am runs really rough until it warms up and then is fine. Lately when I start it, it sputters and dies. If I punch the gas quickly it comes to life. There is a fuel smell with the exhaust. I have unplugged the maf sensor and there is no change and it is clean. Egr valve seems to be ok and the passages are not blocked. I have sprayed all over with carb cleaner and haven't found any vacuum leaks. I'm at a loss! It's the 3400 engine.
Saturday, November 9th, 2013 AT 5:43 AM