Auto trans issue
Thread Starter
Instructor
Joined: Mar 2009
Posts: 100
Likes: 0
From: Colorado Springs, CO
Auto trans issue
So my c5 has been sitting for 4 years I recently just pulled it out and got the motor rebuilt and tuned with less then 100 miles my transmission is slipping and running extremely hot note before I let it sit for years it ran perfectly could it just be low and old tranny fluid or what else could be the issue?
Race Director
Joined: Oct 2004
Posts: 12,742
Likes: 4,587
My C5 has been stored 2 times for extended periods. 1st time was 3 years, second time was 5 years. Neither time did I have any trans trouble (A4). Neither time did my tune change, either. If no fluid was leaking out, AND it had the correct amount in it before, it is likely correct now. The only thing that was really changed was your tune. I would stop driving it immediately, inform the guy who did the tune, and you could maybe take the PCM out of the car (not too difficult to do) and take just the PCM to the tuner yourself to save a towing fee. Have him recheck the tune. I'm sure he made a few changes as far as the trans is concerned. May be something simple. When you rebuilt the motor, did you change things internally that would require a new tune? Reason I ask is perhaps the old tune was saved, and could be reflashed to see if problem disappears. Do you have any codes? Good luck.
Last edited by grinder11; Sep 29, 2020 at 03:51 PM. Reason: Spelling
Thread Starter
Instructor
Joined: Mar 2009
Posts: 100
Likes: 0
From: Colorado Springs, CO
My C5 has been stored 2 times for extended periods. 1st time was 3 years, second time was 5 years. Neither time did I have any trans trouble (A4). Neither time did my tune change, either. If no fluid was leaking out, AND it had the correct amount in it before, it is likely correct now. The only thing that was really changed was your tune. I would stop driving it immediately, inform the guy who did the tune, and you could maybe take the PCM out of the car (not too difficult to do) and take just the PCM to the tuner yourself to save a towing fee. Have him recheck the tune. I'm sure he made a few changes as far as the trans is concerned. May be something simple. When you rebuilt the motor, did you change things internally that would require a new tune? Reason I ask is perhaps the old tune was saved, and could be reflashed to see if problem disappears. Do you have any codes? Good luck.
Drifting
Joined: May 2008
Posts: 1,691
Likes: 488
From: Denver, NC
2 things come to mind if the tuner didn't jack up trans settings.
1) If you removed the radiator, did you properly refill the transmission (running at idle). If not it could be low.
2) Cam and internals - like pistons? How much more power does the car have - maybe you pushed an aging trans on that had one foot on the proverbial banana peel.
1) If you removed the radiator, did you properly refill the transmission (running at idle). If not it could be low.
2) Cam and internals - like pistons? How much more power does the car have - maybe you pushed an aging trans on that had one foot on the proverbial banana peel.
Drifting
Joined: Sep 2009
Posts: 1,862
Likes: 594
From: Prescott, Arizona
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