I have an 88 t2 running on a haltech e8. car was running fine until i gave it a little rev and the car shot to redline. i shut the car off immediately and restarted it again. the car now revs to 4k, drops back down to its regular idle (800) and repeats. ive checked for the usual vacuum leaks, ive pulled the tb off and made sure its not stuck. im out of ideas, hope u guys can give me a hand.

 

Check your tps?