1999 trans am idles rough when cold
12-05-2008, 02:41 AM
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1999 trans am idles rough when cold The car is idleing rough when first started. When i give it gas there is a very minor delay. Also, when i brake at a light i can kinda feel the car sputtering a little bit. This only happens for the first 5 minutes i drive it. I have msd plugs and wires that came when i bought the car about 30000 miles ago. Any ideas would greatly be appreciated. Thanks!
12-05-2008, 02:30 PM
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retorque your intake manifold, i had a rough idle ONLY when it was cold. Only happened the first cold start in the morning, and would even out when it warmed up. I changed plugs, wires, fuel filter, thought my tps sensor was going out and it was just fine.
Retorqued my intake manifold and that fixed it, some of the bolts were a little loose. I didnt do any intake swaps at all, car is stock. So its worth a try, its free.
jason
Retorqued my intake manifold and that fixed it, some of the bolts were a little loose. I didnt do any intake swaps at all, car is stock. So its worth a try, its free.
jason
12-05-2008, 06:21 PM
#3
FUEL INJECTOR CLEANER!!!
This has happened to me past 2 winters. VERY rough idle, the first winter, took it to shop and they replaced the #8? injector all the way in back passenger side.
This winter, not very bad at all after constant cleaning of fuel system/intake
at least try before you try something costly
This has happened to me past 2 winters. VERY rough idle, the first winter, took it to shop and they replaced the #8? injector all the way in back passenger side.
This winter, not very bad at all after constant cleaning of fuel system/intake
at least try before you try something costly
12-08-2008, 03:01 PM
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Throw a Vacuum gauge on it and see what it tells you.
I have a 2000 Silverado that had these EXACT same symptoms. I Changed the intake manifold gasket out and it fixed it. A vacuum gauge will tell you if its a manifold leak.
I have a 2000 Silverado that had these EXACT same symptoms. I Changed the intake manifold gasket out and it fixed it. A vacuum gauge will tell you if its a manifold leak.
