Question about 2004 Pontiac Grand Am
On a grand am 2004 4 clinder
I'm not real familiar with that car, but a lot of the newrer cars have gone to coils that sit right on top of the spark plugs. There are no more spark plug wires, the coils get a signal from the computer. The computer is getting information from the various sensors on the vehicle, then it send signals to the coils and fuel injectors. The computer takes care of the timing and fuel mixture, it will automatically adjust for temperature, elevation, vehicle speed and so on.
Posted on Dec 12, 2009
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Posted on Jan 02, 2017
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