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Re: TH350 problems Shifts at 4500+rpms?
Quote:
Originally Posted by kalbert
Have you checked for vacuum leaks? Particularly in the vacuum line that connects to the vacuum modulator on the transmission? Without a way to sense engine load the transmission will not shift correctly, and if the engine has a bad vacuum leak it can neither run correctly nor supply the transmission with an accurate indication of load. If it's been driven alot, or driven hard in a poorly running condition or without the modulator connected the transmission will certainly be damaged, possibly severely.
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ill check the vacuum leaks.
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Austin
1996 Chevrolet K1500 Silverado 
1979 Chevrolet K10 Scottsdale - Carolina K10 -
My 4.8L Twin turbo build - Project Short Stroke -
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