Just looking for some help. I have a 1994 pontiac grand prix 3.8 v6 with 122,000 miles. My car started shaking about a year ago, it would idle really rough while I was at stop and go lights usually. It got to the point where it finally died, and when I unhooked the spark plug cable from coil, it was black on the metal part the cables attach to. So I replaced cables and it ran perfect for about two weeks. Now, anytime I go over about 45 mph, my car starts to shake back and forth really bad. If I am under that it usually runs perfect still, and while I am idiling it doesn't shake at all anymore. If it is shaking really bad, and I keep the gas pedal at the same spot, it starts to slow down. I have to accelerate for it to speed up, and when the rpm's rise the shaking usually stops for a little bit but comes back right away. Like I said, it only happens once I reach speeds about 45mph. Any ideas?
Sunday, January 21st, 2007 AT 10:28 PM