Car jumped...need advice as to what it is. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-11-2005, 12:33 AM   #1
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Default Car jumped...need advice as to what it is.

Hi, I was sitting at a stop light yesterday, and my car just violently jumped foward. It stayed running and drove fine afterward. Does anyone have any clue what this may be? I haven't run any tests what-so-ever.

Keep in mind, about 2 months ago the tranmission slipped on me once. Havent had any troubles in about 3,000 miles until this.

Thanks!
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Old 09-11-2005, 08:31 AM   #2
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When you say jumped do you mean it litteraly jumped or kinda surged a little forward?
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Old 09-11-2005, 11:58 AM   #3
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Its call TORQUE
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Old 09-11-2005, 12:19 PM   #4
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Quote:
Originally Posted by BillBoost37
When you say jumped do you mean it litteraly jumped or kinda surged a little forward?
Surged foward with quite a jerk.
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Old 09-11-2005, 12:34 PM   #5
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I had a similar experience, and mine felt like the tranny disengaged, and slammed into gear.. but not violently. almost felt like putting a car in gear when the idle is too high. but at the time this happened to my car, It was already in gear, and i was stopped at a red light.

My friend said. I think your tranny is shot, but since then I have had no tranny troubles, an dmy fluid looks good as well.

Sam
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Old 09-11-2005, 02:13 PM   #6
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Thats just about exactly what mine did. I'll have it looked at tomorrow.
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Old 09-11-2005, 07:41 PM   #7
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This sounds like the pcm commanded more fuel for some reason. Guessing that maybe MAF/TPS is acting up ...but want more opinions on that.
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Old 09-11-2005, 07:44 PM   #8
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Quote:
Originally Posted by BillBoost37
This sounds like the pcm commanded more fuel for some reason. Guessing that maybe MAF/TPS is acting up ...but want more opinions on that.
Well it seemed like what MadSam said. Almost like it popped out of gear, then back in very violently'

Whats the TPS?
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Old 09-11-2005, 07:47 PM   #9
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Throttle Position Sensor..

I'm thinking it'* either seeing an incorrect amount of air or a bad throttle position.

However I've asked for other gearhead/admin/mod input ... hopefully we'll have something for you soon.
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Old 09-11-2005, 08:08 PM   #10
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Quote:
Originally Posted by BillBoost37
Throttle Position Sensor..

I'm thinking it'* either seeing an incorrect amount of air or a bad throttle position.

However I've asked for other gearhead/admin/mod input ... hopefully we'll have something for you soon.
Okay, thanks a lot. This doesn't sound like a transmission problem to you?
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