Originally Posted by X-fired

Over a year ago, my engine would rev to 2k-3k while idling, and would rev in between shifts (manual). Sometimes it would idle roughly, I'd give it some gas and it would hesitate and then rev to 2k+ then stay there. After a day of that, it cleared up.

About six months ago, it did it again. That time I suspected the MAF so I disconnected the cable, cleaned the contacts (not the MAF sensor itself) and the problem cleared up. I never knew if that really fixed it or if it was coincidental.

The problem started again today and was probably worse than before. It died a couple of times at red lights and it would buck during shifts. This time the check engine light came on so I took it to a parts store to read the codes which was Intermittent MAF Sensor (or something to that effect).

I'm wondering if: A. the electrical contacts need to be cleaned again, B. I need to remove and clean the MAF Sensor with MAF spray cleaner, or C. I need a new MAF sensor.