4l80 won’t move
Thread Starter
Teching In
Joined: Apr 2022
Posts: 29
Likes: 10
4l80 won’t move Hello guys making a new thread here , my newly installed 4l80 has line pressure but won’t move in any gear , feels like it engages and try’s to move in that direction but feels like I have 6000 stall and only moves a inch , I’m concerned the converter is bad anything I can do to confirm this (stock stall )
line test :
park 60psi
reverse 115psi
neutral 60psi
drive 80 psi
line test :
park 60psi
reverse 115psi
neutral 60psi
drive 80 psi
TECH Enthusiast
Joined: Jan 2019
Posts: 677
Likes: 490
From: Roxana, IL
Those idle pressures look good. However it would be nice to see the same pressures with a 2000 RPM Stall & the case connector un-hooked.
I can only think of 1 or 2 scenario's that would give a no-move forward or reverse and still have pressures.
1st is a bad converter
2nd is a broken input shaft/output shaft
Everything else should give at least forward or reverse.
I can only think of 1 or 2 scenario's that would give a no-move forward or reverse and still have pressures.
1st is a bad converter
2nd is a broken input shaft/output shaft
Everything else should give at least forward or reverse.
Thread Starter
Teching In
Joined: Apr 2022
Posts: 29
Likes: 10
It is 2wd and I will test line pressure unplugged tomrrow and also will try to feed it more fluid since I lost track of how much it ate and spilled, will stalling it at 2k with forced max line pressure tell us something ?
TECH Enthusiast
Joined: Jan 2019
Posts: 677
Likes: 490
From: Roxana, IL
It should take 13-14 qts. with a new converter. I have had many 4L80E customers stop at 10-11 qts and call about it not moving or acting funny.
