4l80 line pressure help!
Thread Starter
TECH Fanatic
Joined: Jun 2014
Posts: 1,533
Likes: 12
4l80 line pressure help! Ok pressure is as follows
At idle
Park 65
Drive 120
Reverse 100
With foot on throttle and gas
D 170
R 215
Are these acceptable pressures? I'm trying to calibrate shifting with tci ez tcu and am having trouble . Soliniods checked out so now I'm checking line pressure . Want to help me diagnose?
At idle
Park 65
Drive 120
Reverse 100
With foot on throttle and gas
D 170
R 215
Are these acceptable pressures? I'm trying to calibrate shifting with tci ez tcu and am having trouble . Soliniods checked out so now I'm checking line pressure . Want to help me diagnose?
Thread Starter
TECH Fanatic
Joined: Jun 2014
Posts: 1,533
Likes: 12
According to extreme automatics.com at idle, p,d,n, should be 40-70 and with throttle pressed to the floor should be 160-180. Reverse should be 60-70 at idle and300-330 at full throttle. So it would seem I have low reverse pressure . What does this effect?
