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1. 

   Codes 83 84 85 on Updated ECU

   The TCM codes led me to think transmission issue. What’s the condition of your throttle cable? Have you checked your timing?

   • Words: 22
   • voodu3
   • Post #5
   • Jan 10, 2023
   • Forum: 80-Series Tech
2. 

   Codes 83 84 85 on Updated ECU

   Have you looked at the transmission troubleshooting steps in the FSM? It’s pretty thorough and it has helped me in the past. I would say you have a solenoid problem but that’s just a guess.

   • Words: 37
   • voodu3
   • Post #2
   • Jan 9, 2023
   • Forum: 80-Series Tech