I have a question about my 2005 pontiac grand prix gt.
Basically, half of the time I start my car it starts up very weak and immediatly starts
sputtering and then dies. The other half of the time it starts up very strong. Replaced
the battery 3 months ago, and have alternator tested along with the battery just to
make sure today and both are good. Also, when it starts sputtering, if I give it gas then
it will turn over just fine.... its only when i turn the key over and thats it is when the
above happens... any help is much appreciated.