Just started noticing a small idling issue this weekend. When I am sitting at a light the car will idle down to ~500 rpms then back up ~750 rpms. I checked all connections under the hood and there was a couple of loose connection on the intake after the MAF so I tightened them and took it out for a spin. When I got to a stop light it still continues to happen. I then cleaned the K&N filter and re-oiled it but the problem is still happening. I did have one head replaced because the #7 valves were burned but that was about 1500 miles ago. I did a search and the only thing I can do is to clean the MAF but is there anything else I can do? I have a K&N FIPK, MRT catted H pipe and Flowmaster exhaust and everything else is stock. The vehicle has ~37,000 miles. Thanks for any help!!
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