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I have a 98 Nav and it starts great with no problems. The only thing is it stalls while idling and i know its not the transmission or the relay. What are my options?
sounds like the butterfly valve, or IAC. idle air control? yeah, if tat thing is dirty inside or u gots a leak, then it'll affect ur idling and ur gas mileage too. i remember this cos i helped replace that butterfly valve on a crown vic. if the sensor or motor is out on the butterfly valve, i think there is no part for tat. u might have to buy the whole butterfly valve. but clean it up and see if it fixes the problem first.
but if u do have a check engine light, go to o'reilly's or autozone to scan for the code. with the code, it's much easier to pinpoint the solution to the problem.