Having problems with your 1995 Mercury Cougar ?
I think you should check your idle speed control sensor and maybe replace your o2 sensor otherwise your timing is a bit off slightly retarded it may need to be advanced!
Repair Help & Product Troubleshooting for 1995 Mercury Cougar
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.