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Old 04-23-2014, 07:25 PM   #1
upSSman
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Drives: 2021 Wild Cherry 1LE
Join Date: Feb 2014
Location: Spring, TX
Posts: 107
What is wrong?

I have an L99, and when driving in automatic mode the shifts are acting a little crazy. Its not just a slight drag, its REALLY bad and the exhaust farts and front end nose dives. When driving in button-shift mode I can get smooth shifts and drive comfortably. The shop I got it tuned at says it has nothing to do with my tune and is possibly the torque converter or transmission fluid issue. Only reason I mention the tuning is because it was acting sorta like this before the tune, then afterwards it was great and fixed for like 2 days, then it went back to its old habits...

Anyone?

MODS: cai, bbk 95mm tb, jet maf, msd wires, obx lts, cb, custom tune now with stock transmission tune
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Last edited by upSSman; 04-23-2014 at 07:29 PM. Reason: forgot mods for reference
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Old 04-23-2014, 09:15 PM   #2
Joshua nuzzo
 
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Drives: Supercharged 2011 camaro ss vert
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Fart? Like is it back firing? Was the car stock when you got it
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Old 04-24-2014, 08:18 AM   #3
upSSman
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No, that was a little misleading, its definitely not backfiring. its like it struggles to shift and the sound is just pronounced by my exhaust
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Old 04-25-2014, 07:41 AM   #4
upSSman
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Ok now I figured out if I shift into [M] but don't touch the buttons so it stays in automatic mode the shifting is normal. However if I shift I to [D] the automatic shifts go haywire. Methinks a wire is faulty... but which one?

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