my chevy runs like crap any ideas???

[leonwold]

hey guys i have a chevy with a 5.0L v8 and it runs horribly. when u stomp on the gas it just dies, then revvs up and down on its own and sounds really ragged. after u drive around it stars to idle like a drag racer and wants to stall. i changed the fuel filter, coil and injectors and it didnt change a thing. plugs all look clean. any ideas what it might be?

[mikewarme]

hey guys i have a chevy with a 5.0L v8 and it runs horribly. when u stomp on the gas it just dies, then revvs up and down on its own and sounds really ragged. after u drive around it stars to idle like a drag racer and wants to stall. i changed the fuel filter, coil and injectors and it didnt change a thing. plugs all look clean. any ideas what it might be?

I know the problem....................Its a GM!

[dmr8x2]

and if i remember right the fuel pump is under the intake and they are pron to start leaking
but it sounds like a vacuum leak to me
take come carb cleaner and spray it around the vacuum lines while it is running
if it starts to die MORE check that area
auto-zone can run their scanner on your truck for free too

good luck

[TotallyBalistic]

what year model is the truck?....pull the air breather off and look on the back passengers side of the throttle body, theres a round deal with a plug in it that threads into the throttle body. its called a idle air something...they went out quite often and caused a rash of retarded shyt that idle control stuff shouldnt cause. it may also be the main injector goin out. i can help you more though if i know the year

[wrngwae]

i bet you it is a 98ish and your fuel injection "spider" is bad. it is the feed to all your injectors under your intake. read up on it chevy's were bad for that.

[pennyman1]

there is also a oil pressure sensor on the top back of the block that goes bad and causes erratic running also on 88 - 98 5.0 GM.