I have a 1999 Pontiac Grand Prix gt. It has a really bad hesitation problem when its cold.

15

Asked by graveman6 Aug 04, 2013 at 08:31 PM about the 1999 Pontiac Grand Prix 4 Dr GT Sedan

Question type: Maintenance & Repair

It has a really bad hesitation problem when its cold. It just acts like it doesnt want to
go. I replace the knock sensor and crank position sensor and that has not fixed the
problem. I changed those because they were throwing codes. Now it has a mass
airflow sensor that i am replacing. Is there anything else that might cause this. It only
does it when its cold. It spits and sputters until about 10 mph then smoothes out
some. does that until it warms up. I am really confused. Can someone help me

1 Answer
15

graveman6 answered 11 years ago

The mass airflow sensor didnt fix it. now the mechanic is saying its a dead cylinder. replaced spark plugs wires and one crack plug. Not sure yet if that did the trick yet because i have not heard from the mechanic since i dropped off those parts.

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