1996 Pontiac Sunfire Rough runningrefuses to accelerate

1996 PONTIAC SUNFIRE
280,000 MILES
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RAMMAN88
  • MEMBER
  • 5 POSTS
Just bought this car, starts easy, runs rough, won't rev up. Replaced spark plugs and wires, old plugs were black, carbon fouled. Vehicle won't rev over 2500 rpm, bogs down bad when trying to drive. Has 5 speed standard transmission. I'm 62 and disabled, had to junk my old car and bought this nightmare, never liked GM products, now I know why. Can't afford to spend a fortune on it. Was told it sounded like a bad throtle position sensor. Can you please help me?
Jun 17, 2013 at 1:08 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Will engine rev up while in park? When driving does exhaust sound loud?MIL light on?
Jun 17, 2013 at 3:01 AM
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RAMMAN88
  • MEMBER
  • 5 POSTS
It does not rev up in neutral, (5 speed standard transmission), exhaust not loud and no light on. Engine does seem loud, exhaust kind of sound.
Jun 17, 2013 at 8:06 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Have exhaustback pressure checked. Suppect cloged CAT
Jun 19, 2013 at 1:39 AM
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RAMMAN88
  • MEMBER
  • 5 POSTS
I will have that done, thank you so much for your help!
Jun 19, 2013 at 1:45 AM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
so what happened?
Aug 13, 2013 at 4:53 AM
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RAMMAN88
  • MEMBER
  • 5 POSTS
Turned out to be a bad timing chain tensioner. Cam was off 3 teeth. Replaced timing gears chain and tensioner. Runs good now.
Aug 13, 2013 at 11:01 PM
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DOCFIXIT
  • ✓Experienced Mechanic
  • 18,828 POSTS
Well that would do it glad to hear your up and running
Aug 14, 2013 at 2:51 AM
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