2002 FORD F-150 PICKUP, 4R70W

N/A

N/A

N/A

first visit

none

Original Customer Complaint:
delayed engagment in fwd, neutralizes at stops.
Current Customer Complaint:
delayed fed engagement, falling out of gear at stops.
Work Completed This Visit:
line pressure test- rev normal (epc and line, idle and stall). fwd - line pressure low, epc pressure below specs- idle-20lbs, wos-80. Voltage to epc stays constant at 1.44 volts- does not change with throttle opening. Replaced epc solenoid, internal hard wire harness, case connector, PCM. Still have same problem- epc ground signal wire from pcm to trans OHMs good, trans shifts normal once it engages with rpm rise.
I have removed and inspected valve body and air checked the fwd clutch- no problems detected.
Summary:
this trans still had the lollipop in it and the pan was clean, Does the epc voltage on the 4r70w start low and rise with throttle? (opposite the 4r100).

Login Now to read this Fix