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1. 

   P0770 transmission trouble code and loss of forward progress

   Problem solved! I replaced the lockup solenoid and all is well. It is clear that the lockup solenoid does more than locking the torque converter, it impacts the overall function of the transmission. This $150 part (from Partsouq, would be $260+ domestic U.S.) #3525050030 will indeed...

   • Words: 64
   • cartercd
   • Post #7
   • Dec 23, 2022
   • Forum: 80-Series Tech
2. 

   P0770 transmission trouble code and loss of forward progress

   I pulled the lockup solenoid and it tested bad. I am still not convinced this is my only problem, but will replace it and see what happens. I am saving $150 by ordering through Partsouq, but I need to wait for their weeklong holiday - uggh.

   • Words: 45
   • cartercd
   • Post #5
   • Nov 30, 2022
   • Forum: 80-Series Tech
3. 

   P0770 transmission trouble code and loss of forward progress

   I took it for a test drive this weekend. It started off fairly normal. When I was going around 40mph I punched the pedal to the metal to see what would happen. The rpm jumped up, but the transmission didn't respond. It then started slipping. I pulled over and couldn't progress (in forward...

   • Words: 210
   • cartercd
   • Post #4
   • Nov 28, 2022
   • Forum: 80-Series Tech
4. 

   P0770 transmission trouble code and loss of forward progress

   This is in reference to my 1997 FZJ80 with A343F transmission and 185K miles. What happened: My UltraGauge signaled a pending trouble code P0770, which per FSM is a “Shift Solenoid E Malfunction (Shift Solenoid Valve SL)”. The check engine light never came on. I drove about 8 miles on surface...

   • cartercd
   • Thread
   • Nov 23, 2022
   • Replies: 6
   • Forum: 80-Series Tech