GM Drivetrain & Suspension Chassis | Transmission| Driveshaft | Gears/Rear End/Differential | Traction Aids

Broke 80e

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Old Dec 14, 2008 | 12:57 PM
  #11  
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one sec
https://www.performancetrucks.net/fo...d.php?t=427848

taht trans.

If put in drive, you cant hardly move. But using efilive, put it in fourth using the scanner, it holds fourth fine.

Put it in either first second or third and it moves just fine. I think i could powerbrake it.

Ive been driving in third, drives normal. Then at highway speeds i just put it in drive and it shifts to fourth then its good. But if u hit a stop sign, throw it back in manual third so it will use first and second on the takeoff.

No reverse at all.

Last edited by charcold-bowtie; Dec 14, 2008 at 01:02 PM.
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Old Dec 14, 2008 | 01:25 PM
  #12  
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Man suck to here that you still get it going.
Maybe its in the tune.
Let me know if you would like for me to flash it for you.
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Old Dec 14, 2008 | 01:28 PM
  #13  
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Originally Posted by charcold-bowtie
Ive decided its a reverse apply piston. Or that my guess.....
doesn't explain why you have slip in 1,2, and 3...

It sounds like a valve body/manual valve issue, seams strange that it just started doing it.. how many miles on the trans before the issues started???
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Old Dec 14, 2008 | 03:48 PM
  #14  
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around 300 miles.

shift pressure were extremely high. 80+ MPH chirps....
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Old Dec 14, 2008 | 04:09 PM
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I don't like these 80e problem threads.
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Old Dec 14, 2008 | 04:13 PM
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me either damn and mine is going to be done tuesday for the second time mine was acting like that at first but come to find out my pump got wiped out from the p.i lock up clutch and drive clutch binding it is fully built now waiting on a pump can not find on anywhere.
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Old Dec 14, 2008 | 04:16 PM
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Originally Posted by charcold-bowtie
around 300 miles.

shift pressure were extremely high. 80+ MPH chirps....
it was always this way? you did hook up the vacuum mod right?

Well I would start by checking line pressure... there is a 1/8 npt fitting behind the neutral switch, hook a 0-400or 500 psi gauge up and see what you have....

test pressures in park/neutral, in reverse, in drive, and overdrive...
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Old Dec 14, 2008 | 04:16 PM
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Well, he started his trek home... Hopefully he makes it, i don't think he will have problems, he should have his scanner open the whole way to make sure everything is good...

BTW, it was nice meeting you man after talking to you for year and for those who have not seen his truck it is really nice, the stance and wheels look sick!!


Enjoy the exhaust!
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Old Dec 14, 2008 | 06:49 PM
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wow that sucks. i experienced "something similar" today also with justin. come to find out im running out of fuel pump as soon as it hit 10psi part throttle. so i sorta feel your pain.
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Old Dec 14, 2008 | 06:55 PM
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Sorry to hear about youre problems and hope you make it home Ok. Good luck.
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