1986 Corvette Auto Shifting Problem Please Help
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4th Gear
Joined: Mar 2009
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1986 Corvette Auto Shifting Problem Please Help
Hi there well Im New to the whole Corvette Seen. Just picked up My first corvette last night. Its a a 1986 C4 Automatic and Im having some problems with the Trani. It shifts from 1st to 2nd perfect but after theat It revs And Goes into 3rd at a high rpm but wont go into 4th or overdrive just stays in third. Im not sure what it could be. If you can Give me an Easy Explination That would be great. Thanks guys
"Drink
And Get 
"Drink
And Get
Last edited by Dash8264; Mar 2, 2009 at 01:15 PM. Reason: Caption
Melting Slicks
Joined: May 2007
Posts: 2,171
Likes: 1
From: Warwick RI
Hi there well Im New to the whole Corvette Seen. Just picked up My first corvette last night. Its a a 1986 C4 Automatic and Im having some problems with the Trani. It shifts from 1st to 2nd perfect but after theat It revs And Goes into 3rd at a high rpm but wont go into 4th or overdrive just stays in third. Im not sure what it could be. If you can Give me an Easy Explination That would be great. Thanks guys
"Drink And Get
"Drink
And Get 
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
Hi there well Im New to the whole Corvette Seen. Just picked up My first corvette last night. Its a a 1986 C4 Automatic and Im having some problems with the Trani. It shifts from 1st to 2nd perfect but after theat It revs And Goes into 3rd at a high rpm but wont go into 4th or overdrive just stays in third. Im not sure what it could be. If you can Give me an Easy Explination That would be great. Thanks guys
"Drink And Get
"Drink
And Get A rebuild is required. That is as simple as I know how to say it.
To anticipate the next questions:
1) Changing the fluid and filter will not help.
2) No. A repair is not feasible, as it is internal, and almost full disassembly is required to reach the problem.
3) Yes, you must change the torque converter, as it is worn, and debris from the failure is trapped inside.
4) Depending on where you are in the US, $1000-$2500 is what it normally runs.
Melting Slicks
Joined: May 2007
Posts: 2,171
Likes: 1
From: Warwick RI
You trans has a hurt 3-4 clutch pack, and possibly (although doubtful), and servo/band issue.
A rebuild is required. That is as simple as I know how to say it.
To anticipate the next questions:
1) Changing the fluid and filter will not help.
2) No. A repair is not feasible, as it is internal, and almost full disassembly is required to reach the problem.
3) Yes, you must change the torque converter, as it is worn, and debris from the failure is trapped inside.
4) Depending on where you are in the US, $1000-$2500 is what it normally runs.
A rebuild is required. That is as simple as I know how to say it.
To anticipate the next questions:
1) Changing the fluid and filter will not help.
2) No. A repair is not feasible, as it is internal, and almost full disassembly is required to reach the problem.
3) Yes, you must change the torque converter, as it is worn, and debris from the failure is trapped inside.
4) Depending on where you are in the US, $1000-$2500 is what it normally runs.
He has answered these questions may times as you can tell.
Good Luck
Race Director
Joined: Feb 2004
Posts: 12,518
Likes: 19
Sometimes, like ripping off a band aid, it is easier in the long run to just blurt it out.
Safety Car
Joined: Jul 2008
Posts: 3,966
Likes: 4
From: Made In America
St. Jude Donor '10-'11
You trans has a hurt 3-4 clutch pack, and possibly (although doubtful), and servo/band issue.
A rebuild is required. That is as simple as I know how to say it.
To anticipate the next questions:
1) Changing the fluid and filter will not help.
2) No. A repair is not feasible, as it is internal, and almost full disassembly is required to reach the problem.
3) Yes, you must change the torque converter, as it is worn, and debris from the failure is trapped inside.
4) Depending on where you are in the US, $1000-$2500 is what it normally runs.
A rebuild is required. That is as simple as I know how to say it.
To anticipate the next questions:
1) Changing the fluid and filter will not help.
2) No. A repair is not feasible, as it is internal, and almost full disassembly is required to reach the problem.
3) Yes, you must change the torque converter, as it is worn, and debris from the failure is trapped inside.
4) Depending on where you are in the US, $1000-$2500 is what it normally runs.
I was going to type that it was the clutch pack but you beat me to it. I havent seen your post in awhile?
