need 4l60e help. no 1st gear
need 4l60e help. no 1st gear i scaned it and have these codes
po758 2-3 shift solenoid circuit
po753 1-2 shift solenoid circuit
p1860 tcc pwm solenoid circuit
po740 tcc enable solenoid circuit
This is running on jack stands. I cleared the codes and ran it. It has no first gear at all and shifts very hard. Initially has fourth gear, but once it sets the codes it wont go back into fourth. Shifts fine in both auto and manual modes, but wont go into first manually either.
This is a new car to me, so i cant say if it ran good before or not. The only thig I did to the transmission was to add a cooler. I did add fluid and checkthe level. Could low fluid cause this or do the codes point in another direction.
Thanks
Ryan
po758 2-3 shift solenoid circuit
po753 1-2 shift solenoid circuit
p1860 tcc pwm solenoid circuit
po740 tcc enable solenoid circuit
This is running on jack stands. I cleared the codes and ran it. It has no first gear at all and shifts very hard. Initially has fourth gear, but once it sets the codes it wont go back into fourth. Shifts fine in both auto and manual modes, but wont go into first manually either.
This is a new car to me, so i cant say if it ran good before or not. The only thig I did to the transmission was to add a cooler. I did add fluid and checkthe level. Could low fluid cause this or do the codes point in another direction.
Thanks
Ryan
Yes I would agree that many codes points to a disconnected electrical connector, Blown fuse or other power issue.
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connector is plugged in. all fuses were good. Power on pin E(the pink wire) was approx 10.5v. The battery was not fully charged from sitting, could low voltage cause this? I'm charging it now, so hopefully in the morning I will have an update
Thanks
Thanks
voltage is good. sitting at 12.55v started car with and without charger attached, but it keeps going into limp mode and resettting the codes as soon as I start it. Any other ideas on where to look next?
also just noticed that reverse and park work fine, but the wheels spin forward when it is in neutral. On jackstands, it will get up to 7-8 mph in neutral. I don't have any other automatic cars, but I am assuming that this isn't normal
TECH Junkie
Joined: May 2012
Posts: 3,050
Likes: 716
From: Poplarville, MS
It is normal for the wheels to spin when trans is in neutral and wheels are off the ground. You are going to need some kind of scanner that will let you read which shift solenoids are on/off or if they are even coming on in each gear to be able to diagnose this problem.
