car is bucking under acceleration...any ideas? |
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car is bucking under acceleration...any ideas? |
era vulgaris |
Aug 27 2014, 02:04 PM
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#1
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J is for Genius Group: Members Posts: 982 Joined: 10-November 13 From: Raleigh, NC Member No.: 16,629 Region Association: South East States |
My car has developed an extremely annoying bucking under acceleration. It started about a week ago, and at first it would only happen while accelerating out of a fast turn. But now it does it all the time while accelerating. It's like the car is oscillating between half power and full power, making it lurch-slow-lurch-slow-lurch-slow. It's like you're riding a bucking bronco or something. The only cure seems to be to get off the throttle completely, upshift, then slowly accelerate.
Anyone have any idea where I should start looking first? |
era vulgaris |
Aug 28 2014, 09:44 PM
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#2
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J is for Genius Group: Members Posts: 982 Joined: 10-November 13 From: Raleigh, NC Member No.: 16,629 Region Association: South East States |
Celebrated too soon (IMG:style_emoticons/default/sad.gif)
Went for another drive tonight, and it was bucking again. It seems to be way worse when the engine is cold, and once warmed up it seems to go away for the most part. Arrrgggghhh! (IMG:style_emoticons/default/headbang.gif) |
PancakePorsche |
Aug 29 2014, 02:33 AM
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#3
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Member Group: Members Posts: 236 Joined: 29-July 11 From: Southern California Member No.: 13,373 Region Association: None |
Celebrated too soon (IMG:style_emoticons/default/sad.gif) Went for another drive tonight, and it was bucking again. It seems to be way worse when the engine is cold, and once warmed up it seems to go away for the most part. Arrrgggghhh! (IMG:style_emoticons/default/headbang.gif) Symptoms indicative of overall lean mixture. Make sure you have at least 30 PSI available at fuel rails. Factory setting was 28 PSI but that was when gas was "real" gas. |
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