4l60e line pressure
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Teching In
Joined: Oct 2020
Posts: 18
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From: middle of oklahoma
4l60e line pressure I've tried to read up as much as i can about line pressure, but still have a couple questions. I have everything pba puts in a transmission. Can't remember which boost valve i have. i believe it is the sonnax one. Most threads i have read say if you have a boost valve you should be a mininum of about 75psi at idle and about 130 or more for reverse. My cold start up or hot after driving is a rock solid 64-65 psi,. I mean that thing never moves. My reverse is around 90, i do have the check ball in the case taken out for reverse also. I have not done wot yet to see what that is cause i am unsure of the tune for the tranny still. but if i just blip the throttle in gear or park it bounces over 200 immediately. Also when driving down the road if there is no real load just easy throttle going through the gears or cruising down the road my psi does not move off 65psi either. Unless there is any type of load or acceleration then it will climb accordingly. Easy part throttle acceleration It shifts around 150 or so. Just curious if all that is how they normally are. All my pressures settings are pretty much stock. I did notice my steady state was disabled but haven't found much information on those adaptives.
Last edited by Panhead1; Mar 19, 2022 at 10:35 AM.
Thread Starter
Teching In
Joined: Oct 2020
Posts: 18
Likes: 0
From: middle of oklahoma
I am also posting a log of it shifting today with full torque management settings on. One driving in overdrive and one driving in 3rd. You can feel a quick shift while driving but for some reason the computer is not showing it and a few times it says the 2-3 takes 5 seconds to shift and stays spark retarded that whole time. Its very strange. I guess i need to do a log with all tm off and see if it shows the same thing. Ignore the lean afr. changed other stuff and forgot to calibrate everything afterwards.
