hitpro

I have a couple of problems with my 98. The first one is when I'm accelerating from 1st. I feel a vibration, sort of like grinding, in the gas pedal. It goes away once I hit 2nd. It varies in occurence and yesterday it was very pronounced. The second problem is when I slow down and speed up again; as if I'm making a turn or at a yield sign. I'm going to install new plugs, gas and air filter and pcv. Hopefully that takes care of the latter. As for the first problem, is my tranny going???