My friend was trying to put in a ground kit in his Maxima and now when the RPMs get to about 2 and a half, the car studders and won't shift or accelerate anymore.



we took all the grounding stuff off after we noticed the problem and still the same happened. When the wires were on still but disconnected from the battery the car would start, but it would die suddenly. This happened about three or four times. Smelled like gas too.


Now that the wires are off we only have the problem of the RPMs and acceleration. The car will shift if he accelerates slow and it shifts below 2 and a half RPM.


The transmission was slipping slightly every once in a long while before.
It is an automatic.


Any help or suggestions about what might be wrong will be greatly appreciated.