Lift pump died .truck would start but loped bad .Replaced pump and filter.Now it will start easy but will miss bad when trying to give it fuel ?? Any help will be greatly appreciated

 

Ok, long before we condemn your injection pump, let's start with the basics. Have you check for engine codes and do you have a tuner box of any sort on the truck?

 

checked codes but have no way of clearing them Truck is completly stock with about 240 thousand miles .Will start and idle good when you try to accelerate it starts missing Have replaced lift pumps before and never had any trouble thanks for reply

 

http://www.bluechipdiesel.com/vp44_diagnostics.html USE THE GUIDE if in doubt. Excellent resource. My last issue turned out to be an air leak at the tank and I decided to do a Blue Chip IP anyway since I am pretty sure my stock reman had a torn diaphragm and sticky timing actuator.

And yup, it did. Averaging in combined driving I was getting 19 unloaded most the time and thought that was about as good as it would get. With the new IP I'm getting consistently 23.5mpg with the new IP. By my math it will pay for itself fairly quickly.

 

Is it possible to clear codes without a scanner?

 

What codes are you showing? This sounds a lot like the problems I have been working through recently.

 

I get 236 ,252,253,1688 and 1689 but I havent been able to clear them. I am sure some of them are from before i replaced lift pump

 

You don't want to hear this, but 1688 and 1689 are VP death codes.

Time for a VP44 as well.

I would suggest you not buy one based upon price, but look around for a quality supplier ( Hint, Bluechip...)

 

Thanks for the replies Ive pretty much eliminated everything else I think your right about the pump will be a couple days before i have time to tear into it. going to buy pump from a shop in Blanchard ,La Have had friends deal with him and they have always been happy Thanks again...

 

Just to update ...New inj pump fixed the truck. Apparently the lift pump took out the inj pump I will be looking into a different lift pump soon. I bought the inj pump from THE TURBO SHOP in Blanchard La The guy there is very helpful and easy to deal with. Thanks for yalls help