2002 Chevy Cavalier Car Violently Jolts When Shifting Gears

Tiny
2K2 CAVI LS SPORT
  • MEMBER
  • 2002 CHEVROLET CAVALIER
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 90,000 MILES
I was driving my 2002 Chevy Cavalier LS Sport Coupe powered by a 2.2 Liter Ecotec Inline 4 Cylinder. I drove into town to go to Wal Mart and the car was doing fine. Once I left, I noticed that when I moved the shift knob into "D" (Drive), the car made a slight jerk. It wasn't that bad at that point. However, when I started driving, I noticed that when it started shifting through the gears, the car would jerk every shift. An amber light that says "Trac Off" which means tracion control off, came on which is not normal when the car is in drive. I made it home thinking it was just a plug that fell out or something. However, when I started the car later that night, it was the same thing, but this time the jerking became more and more violent to the point that I was able to see the engine actually jump everytime I moved the knob into drive. I decided to let the car idle for a bit. About 5 minutes into letting the car idle, the check engine light came on. I am confused about this. Could it be a transmission problem or is it simply the motor mounts going bad? I am clueless here.
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Monday, October 11th, 2010 AT 9:47 PM

3 Replies

Tiny
HMAC300
  • EXPERT
It could be the motor mounts or something I n the transmission screwing up as well. Take it to a trans pro and let him take a look at it to see if it's atrans code. It may be repairable without a rebuild.
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Tuesday, October 12th, 2010 AT 8:04 PM
Tiny
2K2 CAVI LS SPORT
  • MEMBER
I had a mechanic scan for codes today. Two error codes came up. One for the alternator which is not catching a complete charge which he believes is causing the "Trac Off" light to show. The other code is coming from the sensor on the intake which he believes is causing the check engine light to come on. He believes that the alternator has cut power to the traction control system to save power. Also, after looking at the intake, he believes that the intake sensor is bad because the intake appears to be functioning correctly. He says that the alternator needs to be replaced along with a complete set of new motor mounts. I appreciate your response. Please let me know what your take on this information is. After the motor mounts are installed, if the car continues to jolt, then it will most likely be a transmission problem. Thank you again.
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Tuesday, October 12th, 2010 AT 9:14 PM
Tiny
HMAC300
  • EXPERT
Not knowing what your mechanci has for a scanner he may only have one that reads engine codes. Those are the small inexspensive ones, I have one of t hose myself. But for transmission problems you need a larger scanner to read codes from them. Engine problems can cause your problem as well but you should really have a trans guy look at this-do what you want as this is only a suggestion.
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Wednesday, October 13th, 2010 AT 10:08 AM

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