Originally Posted by characteristics
My car is a 94 honda civic 1.5L. Lately it has been reving up and down but if i leave it idling for 5 min it stops and idles fine. But then when I start driving again then at a light it starts to rev the same way. It has never tried to die from it. But there is no check engine light on neither. I took it to a mechanic he didnt know what it was either. anyone have any ideas? Please help me!!
. This is a common problem on Honda motors there is a 90 % chance that the T.P.S is bad which is the throttle positioning sensor which means you need to replace the throttle body,or like the other guy said it could be a vacume leak but more than likely it is the tps.Hit me back and let me know when you figure out what it is.Talk to you later.cy@
--Chuck--