Can someone help me with this?
On cold mornings, the engine misses. If I drive before it gets warm it lugs and I can even hear what sounds like a backfire. It idles at about 1300 rpms, then returns to normal after warmup.
At other times, while waiting for it to warm, the idle will drop to 500 or so until I give it gas, else it might die.
Any input would be appreciated.
Thanks.
Could be a dirty or clogged IAC or a EGR valve that is gummed up. I am betting the IAC . they won't throw a code and you can get em at autozone or the like for about 50bucks and you can put them on pretty easy.
Tim
My bronco is doing the exact same thing. I have yet to find a mechanic to solve the problem, and it has been 3 years and $2500!!! I will try that though, even if it has been tried.
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