Having problems with your 1986 Ford Crown Victoria ?
Speedometer won't work in 88 ford crown vic? - 1986 Ford Crown Victoria
The speeometer cable goes into the transmission and thats where i would start looking to fix the problem.
Repair Help & Product Troubleshooting for 1986 Ford Crown Victoria
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.