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A4 WOT Shift issue

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Old Jun 2, 2008 | 01:56 PM
  #1  
Beer99C5@FastbirdPerf.com's Avatar
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St. Jude Donor '08
Default A4 WOT Shift issue

I seem to have a hesitation on a WOT shift (A-4). The car has 55k on it, I had the dealer do a ATF Flush high 39k. Watching the temp the transmission fluid has never got above say 204 °F and is usually in the 190's.

I checked the plugs they are perfect with about 3k on em (replaced them anyways with them out) and checked the plug wires w/ an ohm meter all is good.

Car is H/C and 417 RWHP since August and was put up for the winter...

Any ideas? Is the tranny going with the higher HP from the H/C? Shifts fine w/ normal driving and no unusual noises, smells or leaks. Seems to be the spirited accelerations only.
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Old Jun 2, 2008 | 11:32 PM
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itzza427
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Don't know much about auto trannys ,but I'll give you a bump to see if somebody might help.
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Old Jun 3, 2008 | 02:37 PM
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The stock A4's will barely hold 350 crankshaft HP.
Call RPM transmissions for your needs.
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Old Jun 3, 2008 | 08:33 PM
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St. Jude Donor '08
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Originally Posted by itzza427
Don't know much about auto trannys ,but I'll give you a bump to see if somebody might help.
Thanks for the bump

Certainly I am not the only one that has seen this...
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Old Jun 3, 2008 | 08:57 PM
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St. Jude Donor '07-'12, '20
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Jim since it's been sitting awhile maybe it needs a few miles to sling the fluid? Is the fluid level full and un-burned?
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Old Jun 3, 2008 | 09:22 PM
  #6  
Beer99C5@FastbirdPerf.com's Avatar
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St. Jude Donor '08
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I am thinking it may be I changed the shifts point from 5900 to 6000 and there is more than one place in EFI live I need to edit that change...???

Bob I think the fluid is good, I am going to put it on a lift soon, but as I said the fliud was changed and the car is not really run hard at all.
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Old Jun 4, 2008 | 07:40 AM
  #7  
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Default shift

Am having a problem like yours but 1st to 2nd is working for me.

You might find some of the replies to the thread [U][U]2.73 to 3.15 WOT 2nd to 3rd REV LIMITER to be helpful. BTW I have not yet resolved this problem yet but am scheduled for a retune today so I can not advise on my solution yet.
http://forums.corvetteforum.com/show....php?t=2034457

Last edited by gunnerrun; Jun 4, 2008 at 07:42 AM.
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