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Chevrolet/700r4 transmission

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Question
I have a 86 corvette with a 700r4 trans.  It won't shift into 3rd or od.  It did this while I was driving.  I passed a car and after the downshift it wouldn't shift into the gears.  It will shift into 3rd, but as soon as you accelerate it down shifts.  If your in 3rd you can manually downshift.  The tranny fluid is red and clean and doesn't have a burnt smell.  I have done the adjustments at the carb. to adjust the downshifts and they are fine.  Could this be the modulator valve sticking? and how does it come out of the tranny?  Thank you

Answer
Paul;
It could be the computor , or in the valve body. I would take it to one of those 24.95 tranny places as they will check it all out and tell you what it is, this way you will not spend a lot in taking it all apart, as it could be a few things. ok

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Roger J.M. Warrington

Expertise

I can help you with most standard type things from 1955 chevys up to around 1975 (1975)>> chevys in differnt areas. engine work heads-cams-trannys-drive train-brakes-some elect. dos and donts. PS UP TO 1975 !! !!!!!!!!!!! I will try with any others after that date. state up to 1975 but I still get 2006-007 etc. I guess you do not read this far ! !

Experience

All i can remember growing up is working on cars and making them loud and fast , and when i started to make money i would sink all of it into my cars so i could get them to go faster and look great. what else is there !I would love a challange to trouble shoot, as it is fun finding what is wrong when all others can not .ON the older cars not past 1975s , etc. so please I will try to help with the newer cars but do not grade me bad if I can not help your 2006 car.etc.

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