Hey guys. I have a 1994 dodge 2500. Like all these old dodges it was shuttle shifting in and out of overdrive so I stupidly put a lock-up switch on it. I only used it on the interstate to keep it in overdrive since I didn't need it on back roads, but now it is locked in overdrive. I had to shift it manually from 1st to 2nd to drive. I'm needing a fix quick to get her back on the road any info and/or suggestions will help! Thanks guys!
NO 4-3 DOWNSHIFT
1. Circuit Wiring and/or Connectors Shorted. 1. Test wiring and connectors with test lamp and volt/ohmmeter. Repair wiring as necessary. Replace connectors and/or harnesses as required.
2. PCM Malfunction. 2. Check PCM operation with DRB® scan tool. Replace PCM only if faulty.
3. TPS Malfunction 3. Check TPS with DRB® scan tool at PCM.
4. Lockup Solenoid Not Venting. 4. Remove valve body and replace solenoid assembly if plugged or shorted.
5. Overdrive Solenoid Not Venting. 5. Remove valve body and replace solenoid if plugged or shorted.
6. Valve Body Valve Sticking. 6. Repair stuck 3-4 shift valve or lockup timing valve.
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