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I replaced the crank shaft sensor on a 2002 pontiac montana van and it cranked fine and ran twice. After checking the fuel pump I changed it and crank the van and let it ran for around 10 Minutes and turned it off, now it refused to crank. I tried the PK3 relearn and it dit not work either. I have plenty of gas coming up to the line conectors at the engine but it will not crank unless I soak a rag in gas and place it where the air filter is located. Run until the vapor is gone.Read more: 2002 pontiac montana: van..a crank..intermittant..good spark - JustAnswer http://www.justanswer.com/pontiac/5onqt-pontiac-montana-working-2002-pontiac-montana-van.html#ixzz20ccVZjCM
Country: United StatesMake: PontiacModel: Montana Thunder 3.4LYear: 2002Engine: 3.4 Liter Already Tried: I replaced the crank shaft sensor on a 2002 pontiac montana van and it cranked fine and ran twice. After checking the fuel pump I changed it and crank the van and let it ran for around 10 Minutes and turned it off, now it refused to crank. I tried the PK3 relearn and it dit not work either. I have plenty of gas coming up to the line conectors at the engine but it will not crank unless I soak a rag in gas and place it where the air filter is located. Run until the vapor is gone.
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Yes
so right now the engine will not physically crank over when you try to start it?
It will crank over and try to crank. It will crank if I spray starter fluid in it but will not run unless I am spraying starter fluid in it.
ok just was making sure it would physially crank over. do you have any access to a fuel pressure gauge to connect to the test port on the fuel rail and tell me what the fuel PSI is key on engine off?also do you have a test light?if that engine physically cranks over it can not be the theft system as the theft system is supposed to not only disable the fuel injector but also the starter
No I do not have a fuel pressure gage but I will either find someone with one or buy one today. What must I do when I get one.
connect it to the test port on the fuel rail turn the key on and tell me what the PSI is reading on the gauge ALSO while your out make sure you pick up a test light if you do not have a good one on hand
Can a fuel pump go out after running fine.
yes it can.or the fuel pressure is too low OR there is no injector signal to send fuel in.if it will run with a gas soaked rag its missing fuel from either low or no pressure or the injectors are missing the ground blink pulse from the computer
There was no fuel pressure. I removed the fuel pump and will return it Monday.
Where the ground blink pulse from the computer. I am new to working on GM vans and other GM products.
ok make sure you have power and ground to the pump before you repalce it to be 100sure.
Was I correct to remove the pump.
of you were getting power and ground at the fuel pump when cranking it over and you had no feul pressure and the fuel filter was not plugged up then yes the pump is bad
Experience: 15 years GM master tech/15 years ASE master