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3-4 shift at 6500+ rpm - What can go wrong?

Old 05-30-2007, 12:43 AM
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Default 3-4 shift at 6500+ rpm - What can go wrong?

Was in the middle of a mind blast today and upshifted from 3-4 at a little above 6500 rpm in 3rd right before it bounced off the rev limiter. What in the tranny is the first to break from high rpm shifts? I've got a fully built tranny but the fluid hasn't been changed in a pretty long time and I'm beginning to worry about something going out soon. The 1-2 shift solenoid has already thrown 2 codes.

What do you auto guys check for before rebuilds?
Old 05-30-2007, 09:04 AM
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The most comon failure I have seen from HI RPM shift is the 3-4 clutch failing though if the trans is built properly this realy wouldnt be and issue. Shift solenoid code could be just that simple a sticking or other wise bad solenoid ,Whats the number of the code .
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Old 05-30-2007, 09:19 AM
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i don't know the code number but it just said "1-2 Shift Solenoid" my buddy says.

sometimes though, the 1-2 shift is really hard and sometimes it's soft. what do you think?
Old 05-30-2007, 09:36 AM
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There could be some isue with the solenoid try and get that number there are several codes dealing with the 1-2 solinoid for electrical and mechanical and code explain the shift differential too ,
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Old 05-30-2007, 05:51 PM
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How long is a "pretty long time" since a flush and filter change? If you have accumulated some crap floating around, the filter can clog causing lower pressure and junk can get into the solenoids. It might be worth a flush & filter if you have some hard miles on the car.
Old 06-05-2007, 01:49 PM
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the tranny has close to 20k on it. what do you think?
Old 06-05-2007, 02:19 PM
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6500 RPMs is high? Hell, I have a bone stock 100,000+ mile car and that's what I shift at like, every day. Is that bad?

Keep in mind, I didn't even know our trannys had solenoids.


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