1999 Pontiac Grand Prix engine runs terrible on and off

174,000 MILES • 6 CYL • FWD • AUTOMATIC
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538705092
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I am having problems sometimes when i first start the car it idles real rough, then when i give it gas it starts missing real bad and sometimes dies all of a sudden like when I take off from a start. other times it runs smooth then all of a sudden it starts running bad just out of no where. and if I give it a lot of gas it will snap out of it. it seems to be getting worse its been going on for a few months or so but like I said it is doing it about 50% of the time now, I give it gas and it starts spitting and sputtering until I give it full throttle then it snaps out of it.
another problem is when I'm going over 60 and I need to use the brakes the steering shakes all over the place I replaced the outer tie rod ends not too long ago I also hear a loud noise sometimes when going around a tight corner. I did notice the rubber grommet on my right lower control arm is like cockeyed and looks wore. maybe this is the problem I don't know but any suggestions would be greatly appreciated. thanks so much for you time
kevin
Aug 30, 2010 at 3:53 PM
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RACEFAN966
  • ✓Experienced Mechanic
  • 5,029 POSTS
OK first the braking problems. If a bushing looks bad then is should be checked if it is bad then replaced. Now the shaking could also be worped rotors or bad hub bearing unit or?
Now the running problems, first I need some info here. What have you done to this point? Have you replaced anything like plugs or filters (fuel filter) or? Get back to me and we will see what we can figure out from there.
Aug 31, 2010 at 3:34 AM
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