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if truck was made after 1988 its sure to have some sort of PCU module and the later types even will tell you exactly why it wont run , but you'll need to hook up a code reader to see what the problem is , but a owner can diagnose some things themslefs , just by using there good hearing .
start by turning key to run not start listen !! did you hear fuel pump prime in tank ?? then shut off this is telling you fuel pump ckt is ok may take several times to hear it
crank engine over listen to fuel injectors click on engine top (takes two people) injectors actually click as they are opened for fuel ?? a old paper towel roll tube held to your ear helps to hear
CarGurusJul 11, 2013 - There is fuel in the gas tank and, I can hear the fuel pump when I ...start it and let it run until it dies then check the pressure and shut the ... 1999 chevy tahoe and I have replaced the fuel pump and fuel filter. .... Well mine was a loose battery connection that just shut down the vehicle completely while driving.
CarGurusAug 8, 2007 - My son (14yrs old) was sitting in the car with it running while i ran into the store. ... when you stop and start idling it will die because the pump stopped and ...i need to replace my filter or should i put it back on and try to start the truck? ... If yourfuel pump pressure and volume is within spec's then you need to ...
without starting the engine position the key to the on position. you can hear the fuel pump operationing for 4 to 6 seconds upon having the key on. if not heard running check the fuel pump fuse, the fuel pump relay, and the engines oil pressure switch. they all work the pump you see the engine oil pressure switch runs the pump untill the engine reaches normal pressure once the pressure is reached to the normal range the computer shuts that circuit off and turns the fuel pump relay on
turn the ignition to the on position without starting the engine. you should hear the fuel pump running for 5 seconds inside the fuel tank. if not heard replace the engines oil switch. that starts the pumps circuit when the key is turned on. after the engine builds up its normal oil pressure the computer shuts that oil switches circuit off and turns on the fuel pump relay
try to start the car, than the anti theift would shut the car off. you wait ten min with the key on, until you see the anti theift flash or disapear. than turn key to off position and try to start it. this will reprogram the computer.. Good luck.
you can also try disconnecting the battery for 30 minutes
The electric fuel pump will have to much pressure for the carb, you need a pressure regulator to cut the pressure down to 5 psi. The reason the fuel pump won't stay running is because it gets its power from the oil pressure sensor by the distributor. Did you install this on the new engine and plug it in? The relay is what runs the pump for 5 seconds and shuts off.
if your mini van has a 4.3 litre engine v6, when you turn the key on you should be able to hear the electric fuel pump start. the fuel pump is inside the gas tank,if you hear the pump you might want to change the fuel filter. The thing about computerized engines and a throttlebody is that you need a fully charged battery to start work with.