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82 with tc lockup problem

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Old Jul 18, 2012 | 08:17 PM
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Default 82 with tc lockup problem

I finally fixed my code 42 esc problem.It needed a new computer,but the first one was bad sending me in other directions.Now after 2 months It is fixed,I also replaced the prom with an original updated gm one.Ok all is good.Before I replaced the computer It never told the tconverter when to engage.Never bothered me because I had it wired so I could force the lockup to engage when I wanted to.Now that I have the new computer when I drive very mellow It shifts from first to 2nd then locks up to fast then third followed by a fast lockup and forth the same.when I drive spirited the car drives good no lock up in 2nd or 3rd and 4th locks up above 40mph.I just want to put anoverride swich back in ,one that can turn off the lockup.I figure into the brake switch is the way to go.by the brake ther are 2 sets of wires a very thick set (heavy gauge) and a very thin pair.any Ideas which wires to splice into Thank u all forum members as always
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Old Jul 18, 2012 | 09:26 PM
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the4 purple wire is the tcc wire n the brake switch
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Old Jul 18, 2012 | 09:50 PM
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Just cut into the purple wire,and insert a simple switch,wont affect brake lights.also is the purple wire one of the to thinner wires.Thank u so so much,the forum is the best.
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Old Jul 19, 2012 | 07:38 AM
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Originally Posted by pricesgarage
the4 purple wire is the tcc wire n the brake switch
Hi, I removed the computer from my 81 so now my lock up does not work at all. Can I find the purple wire on the tranny and install a switch to activate/deactivate the lock up? TIA
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Old Jul 19, 2012 | 12:24 PM
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Originally Posted by Richard Cooper
Hi, I removed the computer from my 81 so now my lock up does not work at all. Can I find the purple wire on the tranny and install a switch to activate/deactivate the lock up? TIA
You should get the B$&M lock up kit.
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Old Jul 19, 2012 | 12:25 PM
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Hyper tec has me at 44-45 mph before lock up but I'm sure they could burn a custom prom for the $$$
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Old Jul 19, 2012 | 05:02 PM
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Default thank you

Really want to thank everyone for there help.The purple wire did it.Still have to determine why the new gm chip causes the car to lock in 2nd and 3rd so early,or even why it locks up in second or third to begin with.It sounds like a good idea on paper but the computer is to slow to unlock when you give it a little gas once it is locked in second.Ideally the tranny should only lock up in forth,and unlock fast when u give it moderate gas.Any thoughts? but forum members thanks for all your input.I don't respond much to questions because I am not a pro on vettes even though I have had 14 in my life,all c1,s c2' and c3's.unless I know the exact answer I rather not give slipshot opinions.Now I have to rest my back fro going under the dash to get at that brake switch.Old vette owners just fade away. bless u
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Old Jul 19, 2012 | 08:28 PM
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Originally Posted by hugie82
You should get the B$&M lock up kit.
hugie82, I'm kind of looking for the cheap way out right now. I retired a while ago and money is VERY scarce now! Dumbest thing I ever did was to retire!! I'm trying to finda job right now, but at 67 its kind of hard!
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Old Jul 19, 2012 | 10:06 PM
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I believe the quick lock up is a fuel mileage trick used in the early days to lock the trans to eliminate slippage at the lower speeds, my '82 locks quickly in 2 & 3 with the OEM chip, an also with the hypertech.
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Old Jul 20, 2012 | 05:19 PM
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Originally Posted by Richard Cooper
hugie82, I'm kind of looking for the cheap way out right now. I retired a while ago and money is VERY scarce now! Dumbest thing I ever did was to retire!! I'm trying to finda job right now, but at 67 its kind of hard!
I hear ya
The B&M lock up kit is not too expensive. The $ sign was a slip of keys.LOL
It may even pay for itself because of the improved gas mileage....

Last edited by hugie82; Jul 20, 2012 at 05:22 PM.
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Old Jul 20, 2012 | 06:31 PM
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Originally Posted by hugie82
I hear ya
The B&M lock up kit is not too expensive. The $ sign was a slip of keys.LOL
It may even pay for itself because of the improved gas mileage....
hugie82,
Where can I get the kit from? Thanks for your help. Have a great weekend.
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Old Jul 24, 2012 | 05:00 AM
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http://www.summitracing.com/parts/BMM-70244/

Just put a 700r4 in my 75.

It's a whole new car now.

Ralph

Last edited by Ralphbf; Jul 24, 2012 at 06:23 PM.
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Old Jul 24, 2012 | 03:09 PM
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Originally Posted by Ralphbf
http://www.summitracing.com/parts/BMM-70244/

Just out a 700r4 in my 75.

It's a whole new car now.

Ralph
Ralph,
Thank you very much.
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