i have 98.5 24 valve and it wont start up right away then it starts and wont idle right and then it will start to idle right and as soon as u give it gas it starts to shake really bad an make this noise and blows alot of white smoke and shakes really bad not sure whats wrong i think the programer might be it because it starts as soon as the rpms get to 1000 i smelled the oill it smelled fine i have no idea whats wrong if any body has idea please help thank

 

Do you have gauges? What is your fuel pressure? If you don't, grab a test gauge and plug into the vp-44 test port to find out your fuel pressure.

I doubt it is the programmer as it worked fine previously. It sounds like a fuel delivery related issue to me - think through the fuel system from the tank through to the injectors.

Post over in the 24v engine section as well, you'll get more response and assistance. Also fill out your sig so each post your truck is described, it will save you some typing.

 

its a bad sensor (crank, cam, iat) ive never heard a 24v with a fuel issue that runs rough with these symptoms

 

no i dont have gauges and why would it pull an overboost code though

 

Here is an VP44
cheap.

 

I've seen this problem due to a bad lift pump and also have seen it due to bad crank (or was it Cam?) sensor years ago.

Check you LP pressure and for codes. IF you already have checked Codes and you only have overboost, fill out your signature. That might help some. Could be tied to some aftermarket parts on the truck?

 

its the vp44...smarty found 4 death codes for it yet it still starts up and somewhat idles.

lift pump is prolly dead too but we are gonna solve all that when we fix it

 

TJ -
Don't know if you have a good hook up for a VP, but Midwest Fuel Injection really treated me well.
Good luck!
jason

 

Sorry to hear of your misfortune Crash, but a new VP and LP and you'll back in business in no time. You have the master helping you out, so you are in good hands.