chevy 2000 express fuel problems

[motorgirl]

I have a 2000 chevy express van in which we just had the fuel pump, fuel filter and air filter installed. the van ran fine for a while, but now when it gets hot it stalls. when it cools it runs good. we have also replaced the water pumpand a crank sensor. now it won't start at all. any suggestions?

[Scrapper]

sounds like cps installed wrong...are you getting any spark to the plugs?

[motorgirl]

yes, and my brother claims he thinks it is in the fuel because you shoot either in and it starts right up

[DFBonnett]

My guess is that the new pump has failed.

[MT-2500]

Check for lose of voltage to fuel pump and fuel pump pressure.
Also check the fuel pump plug in wiring connector on transmission cross member.
That is a sore spot on the express van.
They lose connection and will give you a fit.
I have had to wire around some of them.
MT

[gquinn]

Also check the fuel pump wiring harness on the crossmember

[Rrey199]

Is this a fuel injected van? I have had problems in the fuel rail with the express that the dealers couldn't nail down. When the rail was replaced it went away.
Also, is it possible that a vacuum leak has popped up, unrelated to the fuel system?
You should check the fuel pressure when the problem pops up to see if the system from the rail/port back to the tank can be eliminated as the problem.

[MT-2500]

Originally Posted by Rrey199

Is this a fuel injected van? I have had problems in the fuel rail with the express that the dealers couldn't nail down. When the rail was replaced it went away.
Also, is it possible that a vacuum leak has popped up, unrelated to the fuel system?
You should check the fuel pressure when the problem pops up to see if the system from the rail/port back to the tank can be eliminated as the problem.

Thanks for the info but.
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