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idle surge
i have a mx6 '92 with 4 cyl. engine that does not idle properly when cold (cold weather).... will start fine but idle increases to about 2500 rpm, then suddenly as if the power was cut the idle falls back to around 750 and increases again to 2500 to go thru the cycle again... the duration between cycles is about 8 seconds... once the engine warms up the idle speed remains normal... where do i begin, i can replace parts but have no test equipment...
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