C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Trans slip

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Old Aug 27, 2017 | 09:13 PM
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Default Trans slip

Hey..Problem just started..I have a 84 c4 AUTO TRANS with 70,000 miles..While driving yesterday I came to a stop light..When i pulled away tranny started to.slip. I then barely made it home only 2 miles away..Slipping in all gears including reverse..Couldnt break 15 mph..Checked fluid level and no burnt smell with proper color. ..Got up next day and car was fine for about 30 min then same problem. .I then changed fluid and filter and car was fine all night. (About 3 hours of driving) Then today (Sunday) problem returned and barely made it home..Any ideas would help..
THANX
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Old Aug 27, 2017 | 10:04 PM
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Originally Posted by 84grb
Hey..Problem just started..I have a 84 c4 AUTO TRANS with 70,000 miles..While driving yesterday I came to a stop light..When i pulled away tranny started to.slip. I then barely made it home only 2 miles away..Slipping in all gears including reverse..Couldnt break 15 mph..Checked fluid level and no burnt smell with proper color. ..Got up next day and car was fine for about 30 min then same problem. .I then changed fluid and filter and car was fine all night. (About 3 hours of driving) Then today (Sunday) problem returned and barely made it home..Any ideas would help..
THANX
You need to put a pressure gauge on when it is doing this and note pressures in all gears.
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Old Aug 27, 2017 | 10:40 PM
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At this point i dont have pressure gauges..Will have to pick one up.
But do u have some idea what could b causing this? Im good with motors n manual trans..Just dont know much about auto trans repair

Last edited by 84grb; Aug 27, 2017 at 10:52 PM.
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Old Aug 28, 2017 | 01:02 AM
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Check your TV cable for damage and setting. Should be full tight at WOT.
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Old Aug 28, 2017 | 07:33 AM
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Already checked tv cable..seems ok
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Old Aug 28, 2017 | 06:45 PM
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Im sitting in car..in park..i can here a low pitched wine also in neutral..i have no 1st or 2nd gear..if i rev i can just barely get reverse or drive..plesse help
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Old Aug 28, 2017 | 09:07 PM
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Originally Posted by 84grb
Im sitting in car..in park..i can here a low pitched wine also in neutral..i have no 1st or 2nd gear..if i rev i can just barely get reverse or drive..plesse help
We can't wave a wand and cure your problem. I suggested you get the pressures checked. Until you do, anything would be a guess. With the wining you describe, it may be your pump is pooched.
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Old Aug 29, 2017 | 11:13 AM
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Ok..thanx
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Old Aug 29, 2017 | 01:22 PM
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Originally Posted by 84grb
Im sitting in car..in park..i can here a low pitched wine also in neutral..i have no 1st or 2nd gear..if i rev i can just barely get reverse or drive..plesse help
That's all you need to know. IF the TV is fine and the fluid level is fine and you didn't shake the filter off.. It's internal and it needs to be rebuilt.

Sorry, bro.
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Old Aug 29, 2017 | 03:37 PM
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A bad or unadjusted TV cable could cause the trans to slip?
thanx

Last edited by 84grb; Aug 29, 2017 at 03:44 PM.
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Old Aug 29, 2017 | 06:04 PM
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Originally Posted by 84grb
A bad or unadjusted TV cable could cause the trans to slip?
thanx
Absolutely. A misadjusted TV can burn one up.

Depending on who built the trans, a broken cable can also. (There's a ball builders leave out that causes a problem there.)
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Old Aug 29, 2017 | 06:22 PM
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Originally Posted by confab
Absolutely. A misadjusted TV can burn one up.

Depending on who built the trans, a broken cable can also. (There's a ball builders leave out that causes a problem there.)
In post #6, the OP describes reving the snot out of it to BARELY get reverse. I would venture a guess he is beyond a maladjusted TV cable.
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Old Aug 29, 2017 | 07:39 PM
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Originally Posted by arbee
In post #6, the OP describes reving the snot out of it to BARELY get reverse. I would venture a guess he is beyond a maladjusted TV cable.
Yeah..
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