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Why is your 92' Cougar idling rough?

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Anonymous

18y ago
Updated: 8/16/2019

If the spark plugs and wires are good, then I would suspect a vacuum leak. As this car is 15 years old, replace all under-hood vacuum hoses. Replace one at a time to not get confused. Also look at the Power Brake Booster hose, and make sure the booster is good.

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Wiki User

18y ago

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