Idles fine - when accelerator is pressed, goes dead
check timing cat may be plugged running to rich
Check the alternator.
how is the condition of the spark plugs and wires? does it have a check engine light on? check those things out first.if no to both of those, maybe Throttle position sensor.
Looking for a Used Cougar in your area?
CarGurus has 161 nationwide Cougar listings and the tools to find you a great deal.
Search Mercury Cougar Questions
Mercury Cougar Experts
Related Models For Sale