Question about 2004 Chrysler PT Cruiser

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When I switch on air conditioning or heating the engine strats to work irregularly and especially when I stay waiting at trafic lights in traffic jams in the city when it is hot.

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Most likely the idle air control valve is faulty. But that's just a guess. Does it do the same thing when you turn the steering wheel at a stop. The IAC is suppose to open a little when a load is placed on the engine in order to add more fuel so the air/ fuel ratio stays efficient

Posted on Jul 17, 2009

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