Engine Cranks but wont start
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Keep in mind that the fuel pump will only run for about 20 seconds if the engine doesn't start. You have to cycle the key again
to get it to run for another 20 seconds. Also if checking for power at the pump it must be done in that initial 20 seconds.
to get it to run for another 20 seconds. Also if checking for power at the pump it must be done in that initial 20 seconds.
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Freshman User
Joined: Feb 2008
Posts: 27
Likes: 0
I have 12.2 colts at time owhen engine is cranking checked fuse and is ok. One other thingI checked was the fuel pump shut off switch and it did not need to be reset, However i took a test lite to the two wires that go to the switch and I find no voltage in either wire.
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
I think one of the most productive things you can do at this point is confirm that you have fuel. Slip a length of hose over the discharge tube and drain the fuel bowl into a suitable container. Then have someone turn the key on while watching the hose and see if fuel is coming out.
Like previously mentioned....the PCM will shut down the fuel pump after about 20 seconds if the engine isn't started so you might have to cycle the key once or twice.
Confirm you have fuel and then we'll go from there.
Like previously mentioned....the PCM will shut down the fuel pump after about 20 seconds if the engine isn't started so you might have to cycle the key once or twice.
Confirm you have fuel and then we'll go from there.
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Freshman User
Joined: Feb 2008
Posts: 27
Likes: 0
drained the fuel bowltill it stopped comming out of tube, Left valve open and had my daughter turn key to the on position for 30 second did we did 3, 30second cycles and not one drop of fuel and did not here fuel pump either.
Logistics Pro
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
Try running a 12-volt direct to the fuel pump... sounds like a dead pump.
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Freshman User
Joined: Feb 2008
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yes I have a Superchips tune in the pcm I tried to remove the tune but the tuner that plugs into the OBD2 port will not connect with the pcm and also the OBD2 scan tool will not connect with the PCM either. bad PCM ?
Logistics Pro
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
Try again. If the WTS light is working, that means the PCM is working. (At least a little.)
After removing the chip, try the fuel bowl again.
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Freshman User
Joined: Feb 2008
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The Superchips is am handheld plug in tuner that once you install the tune Via the OBD2 Portyou un-plug. I pluged it in to retreve the tune out of the PCM but the hand held tuner will not connect with the PCM.
Post Fiend
Joined: Sep 2003
Posts: 6,096
Likes: 26
From: Mesa AZ
Go back to your original post. Your answer is there. Problem began when you replaced the GPR so I suspect something with the wiring.
I don't see that you answered the question about the manual glow plug switch. Did you install something like that? Perhaps the new relay is causing the issue. You can check this by swapping it with the AIH relay instead.
Can you take a photo and post it here?
Logistics Pro
Joined: May 2011
Posts: 4,832
Likes: 668
From: Maine
I thought so.
Go back to your original post. Your answer is there. Problem began when you replaced the GPR so I suspect something with the wiring.
I don't see that you answered the question about the manual glow plug switch. Did you install something like that? Perhaps the new relay is causing the issue. You can check this by swapping it with the AIH relay instead.
Can you take a photo and post it here?
Go back to your original post. Your answer is there. Problem began when you replaced the GPR so I suspect something with the wiring.
I don't see that you answered the question about the manual glow plug switch. Did you install something like that? Perhaps the new relay is causing the issue. You can check this by swapping it with the AIH relay instead.
Can you take a photo and post it here?