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When accelerating bucks until around 50mph then stops if still doing it its very mild

Tiny
ANGELA CROTHERS
  • MEMBER
  • 2002 SATURN SL1
  • 155,000 MILES
My saturn sl1 has started a bucking action when accelerating. It started it out of know where 2 days ago, until then know problems. It does not miss and seems to be shifting fine. It does have the service engin light on and has been on for over a year and ran without an issue. Computer check at autozone just said bad o2 sensor when they checked it then. Weve looked at different sites they say bad egr sensor but that wasnt it. Any ideas what it could be?
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Saturday, January 21st, 2012 AT 11:20 PM

4 Replies

Tiny
RIVERMIKERAT
  • MECHANIC
  • 6,110 POSTS
Have it scanned for codes. Let us know what you find out.
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Sunday, January 22nd, 2012 AT 12:19 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Just to add to this one is the bucking worse with the ac on?I would check the plugs and wires. Make sure you dont have platnuim plugs in the engine those carbon foul in those engines and cause misses etc.
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Sunday, January 22nd, 2012 AT 6:01 AM
Tiny
ANGELA CROTHERS
  • MEMBER
  • 2 POSTS
Saturntech9 thanks for your reply. Plugs and wires were my 1st guess. Changed them and the car runs like new and the servic engine light went off for a little bit, but came back on when it got colder. Suspect its the o2 sensor! No ac running this time of year its freezing here!
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Tuesday, January 24th, 2012 AT 10:40 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
What are the exact code numbers you have not code descriptions so I can help you out further?
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Wednesday, January 25th, 2012 AT 4:25 PM

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