I've been having issues recently with what seems to be the transmission trying to shift into a lower gear when giving it gas. I'll be out on the highway trying to pass someone, give it gas, and all of the sudden the RPM will shoot up to 5k but I get no acceleration. It feels like when dropping from 4th to 3rd that its completely missing 3rd and going into neutral. As soon as I let off the gas it moves back into 4th again. While this is happening the check engine light comes on for only for about 5 seconds then goes off.
Any ideas?
2003 3.8 w/102,xxx