Ford 4.9L no start
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Ford 4.9L no start
I need some HELP! I have been working on a Ford F150 P.U. 4.9L inline six with a no start condition. The guy drove up to his yard parked it and put a for sale sign in window. A month later he went to start and it won't run. It has fuel volume and pressure, spark tp plugs but no noid light flash at injectors. I cheched all fuse links and fuses, relay to ecc. I replaced module and dist. Then in desperation the computor. Still no injector fire! HELP!!!
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I have checked the cut of switch. It is a 1990 f150 2wheel drive manual trans 4.9. I took a noid light and plugged into injector harness. I have no blinking when cranking.
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From: SoCal
So the noid light is lit, but not flashing.
I think the problem is no PIP signal to the computer. The computer uses the PIP to time the firing of the injectors. Looks like the PIP signal comes into the computer on one of the wires from the ignition module. Broken wire?
Have you pulled the codes on this?
I think the problem is no PIP signal to the computer. The computer uses the PIP to time the firing of the injectors. Looks like the PIP signal comes into the computer on one of the wires from the ignition module. Broken wire?
Have you pulled the codes on this?
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From: SoCal
Bigbob, See what you think about the last post in this thread. http://www.ford-trucks.com/forums/sh...ight=injectors
If the guy is right about this you might want to take a couple minutes to pull the codes & see if you get a coolant temp sensor code.
If the guy is right about this you might want to take a couple minutes to pull the codes & see if you get a coolant temp sensor code.
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Well I finally got back to truck. I read the tread about the coolant sensor. I replugged my scanner up and it read the truck this time. The first time it wouldn't communicate. It had a coolant sensor code so I change it. I now have noid light fire to injectors but I need to reset distributer. We pulled out when changing it so now must make sure it is in right. Thanks for the help.
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