88 pu cuts out

got mud? · Dec 12th, 2005, 09:05 PM

i posted earlier that my truck was cutting out and back firing anything over half throttle in my last post newb needn help it tells everything ive done to the truck but i still have the same problemo i really need help on this ive got ahaynes manual and so far ive covered every thing it tells me too and i cant see taking a 88 to a repair shop and spend hundred of dollars for something im probaly just over lookin if any body has any ideas what so ever please reply no matter how simple or off the wall im very desprite here

dvdswanson · Dec 12th, 2005, 09:28 PM

remind me, did you replace the TPS? or did you just work on the top end of the motor? I ran into a problem where around 18-2100 RPM my truck would act like it starved for fuel for about 2-4 seconds and it would go away for 10 seconds if you remained in the specified RPM. turned out I had installed the TPS lever on the wrong side of the bar. didn't catch until I went to check the voltage for the TPS and actually removed it and saw my error.

got mud? · Dec 12th, 2005, 09:41 PM

yes i relaced it. as for mine it runs fine untill i get to half throttle then it will juct cut out and bog down untill i let off the gas if i try to stay on the gas or give it more thats when it backfires its kinda funny to see people jump when she cuts loose but the power loss sucks and the cops dont dig it either

dvdswanson · Dec 12th, 2005, 09:43 PM

did you do anything to the injectors?

dvdswanson · Dec 12th, 2005, 09:44 PM

sorry does it have injectors, throttle body, or a carb?

got mud? · Dec 12th, 2005, 10:26 PM

no other then run some injector cleaner in the tank

dvdswanson · Dec 12th, 2005, 10:43 PM

it maybe possible that you may have a partially clogged injector, the whole problem sounds like it is starving for fuel at the higher RPMs.