2000 E250
4.2L 6cyl
4R70w Trans
124k miles
Trans was shifting hard. Pulled code P1747 (EPC Solenoid)
Drove approx 40 miles
Rechecked codes.
Pulled codes:
P0750 SSA
P0755 SSB
P0743 TCC
P1747 EPC

I drained sytem ( including TC )
Replaced EPC Solenoid
Changed filter and refilled fluid.

Now the trans is stuck in 2nd gear. Limp mode?
I checked for voltage at solenoid wire harness ( tested at 11.88 volts )
Battery is testing at 12 volts with good ground.
Checked fuses and relay ( all good )
Any help is appreciated.

 

Limp mode is fourth gear, not second.

With all the codes you have I suspect a damaged wiring harness.

 

need some help, i have 08 E250 van with 4R70E trans with 112k on it,it started not going into gear at stop then go on take off and started making a louder winding sound in park.so i looked at the post how to change fluids in pan and tuorq convertor. i also changed filter. it was running good till next day and it won't shift back to first for take off maybe third and it started making loud winding noise in park

 

sorry i put my post in this one,new to forum

 

New fluid won't help this one. It needs professional help.

 

so which wiring harness would that be, internal or external? Or maybe both?

 

My guess is the external harness. Diagnostics will pinpoint if it is internal, external, or both.

 

thanks disconnected the harness from the tranny and the pcm, seems to be clogged with fluid. I appreciate the reply!