Thread: 90 cougar supercharged wont idle
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Old 11-07-2021, 12:20 PM
10zman10 10zman10 is offline
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Re: 90 cougar supercharged wont idle
I have an '89 which is the same as yours, when I have that problem I replace the air idle valve and the idle control valve, it usually fixes the idle problems, hope this helps you out.
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