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Why Does my Car Surge like a MF when going into reverse?

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Old 04-26-2008, 07:02 AM
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Default Why Does my Car Surge like a MF when going into reverse?

Car runs perfect, cold starts, barely surges, not even noticeable, goes into reverse fine and doesnt surge when cold, but by the time i get to work to try and back into a parking space i cant because it surges so bad and then dies. I dont know what to do to fix this?
Old 04-26-2008, 01:29 PM
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Check for splits/cracks in the tubing between the MAF and the throttlebody. The engine torques the other way when in REV and could be opening up a split in a tube/duct.

Jeff
Old 04-26-2008, 06:28 PM
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yeah everythings good, it also does it when i put it back into park and surges like a bitch for like 3 min and then slowly finds a stable idle at 950
Old 04-26-2008, 07:25 PM
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sounds like a rich VE down low combined with slow-responding O2s... it's a good place to start.
Old 04-26-2008, 07:50 PM
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thats probably it because i have the corvette rear o2s from bosch that are supposubly slow responding. Heres a stock tune and somewhat idle tune i have rate now. Thanks for helping! The second tune (tryinsomethin) is the one i currently have on the car....thanks!
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Old 04-26-2008, 07:56 PM
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also check out this log i did of a warm start, crazy knock upon startup, and then goes away..any ideas?
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