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Posted on May 20, 2009

Cant get truck to stay running

2000 GMC Z71 5.3 Liter starts up but stalls out have changed plugs air filter fuel pump and drained gas and put in fresh gas but it still wont stay running and sometimes wont even turn over

  • Anonymous Mar 17, 2014

    it starts but when it starts warming up it dies you can start it back up but it keeps stalling it wont stay running if it gets to warm then it takes a bit for it to start but does it wont stay running

  • Anonymous Jan 06, 2019

    If this has a module underneath the coil packs, take the coil packs off and then the module. Take down to have it checked out by an Auto Parts store, (Oreilly, Autozone, Napa

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nate hacker

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  • Contributor 19 Answers
  • Posted on May 21, 2009
nate hacker
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Joined: Jul 26, 2006
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Did you try the fuel filter

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2000 gmc Sierra starts but stalls

Check the fuel pressure while its running. It sounds like the fuel filter is stopping up. Fuel filter should be changed every 50 thousand miles or so. If the filter is bad it won't be long until the fuel pump has to be replaced (located inside the fuel tank)! It's a lot easier to replace the filter before the pump is damaged!
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Use a bottle of yellow HEET dry gas to remove any moisture problem in the fuel.

Clean / replace air filter.

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Could be a small amount of rust got into fuel filter from sitting empty, try changing fuel filter before worrying about the fuel pump.Filters could be partly plugged and its always smart to start with the cheaper fixes first.
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2000 taurus duratec has problems staying running when you first start it.the rpms drop and the car stalls out. i have to give it gas and keep giving gas to keep it running for about 5 min then it runs...

sounds like you are running lean , i would start by changing the fuel filter and check for fuel pressure using a fuel pressure guage at the shrader vavle on your fuel rail, if your fuel pressure is not above 35psi when you cycle your key on and you have changed the fuel filter i would recommend changing the fuel pump,
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I have a 1989 GMC sierra 4.3 Liter, fuel pressure

u can do the check the other way around/ disconnect the fuel line that supply the injectors/ put the pipe in a small plastic container to see if fuel is being supplied by the pump and avoid fuel spill in ur engine/ crank the engine for at least 5 seconds see if the fuel squirts with pressure/ if it does then ur fuel pump is ok / blockage is somewhere down the fuel line/ u can check fuel lines by blowing it with air but u gonna need the help of an air compressor.....
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have the computer checked or inspect fuel injecters if all else fails fuel pump weak.
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