Having problems with your 1990 Ford Mustang ?
1990 2.3 stang won't start after sitting a few months got spark, had to jump fuel pump relay to get fuel pump to work got 35-40 psi but when i turn the key the fuel pressure drops.I fixed ground to computer replaced fuel reg. but pressure still drops. got new relay under seat but pump only runs when i jump it
Repair Help & Product Troubleshooting for 1990 Ford Mustang
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.