Having problems with your 1990 Ford F250 ?
No overdrive/anti-lock brake warning light
\015 Sirs:\012\012 I have a 1990 Ford F250 4x4 7.3l diesel truck with an E4OD\012transmission. The transmission will no longer go into overdrive. At the\012same time this occurred, the Anti-Lock Rear Brake warning light came on.\012Could the two symptoms be related? Could these problems be caused by a\012failure of the speedometer module on the rear differential and/or the PCM?\012Thank you for any help,\012Bob\015
Repair Help & Product Troubleshooting for 1990 Ford F250
Tips for a great answer:- Provide details, support with references or personal experience .
- If you need clarification, ask it in the comment box .
- It's 100% free, no registration required.