When cold my 2000 A33 Nissan Maxima Ti idles normally, but when the engine warms up the idle speed drops to 200 rpm and usually conks out. There are no fault codes and all sensors check out good. What could it be?
The most likely culprit is the idle speed motor. Nissan service specialist Jerry Newman says he’s had to replace a number of them on customers’ cars he looks after.
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