HELP!!!!
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New User
Joined: Jul 2010
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HELP!!!!
I have a 1978 bronco powered by a 1994 fuel injected 460. The Bronco ran great for about 4 years then it started to die on me, I could drive it for days with no problems then one day I would drive a couple of miles then it would quit. I have replaced the PIP sensor, ignition control module (gray one from pep boys), tried a black ignition control module from the bone yard, new TPS, new coil, new ignition switch, new starter relay, new battery, new fuel pump, new computer, new spark plugs, wires, cap, rotor, and so on. I have checked for shorts, nothing, when it kills while I am driving it will back fire after a minute or two the it will run, some times it will die and will not start for hours. There is power to all of the modules injectors every thing but it does not have a spark. Some one please help, before I take it to the desert and use it for target practice.
Cargo Master
Joined: Jul 2009
Posts: 2,541
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From: Des Moines
I would start by pulling the codes. If you've done that much work to it and still haven't solved the problem, I'm just guessing that you haven't taken the time to properly diagnose the issue. There's only so many components that determine spark- so it's got to be one of them. I can't think of everything right off hand but the ignition circuit is your main focus here.
Go to Ford Fuel Injection How To Run a Self-Test to find out how to pull codes without a code reader. Or you can buy a code reader from your local auto parts store. I bought this one from O'Reilly for about $30. http://www.etoolcart.com/ProductImag...tic/3145-L.jpg It's their 3145 model- it's cheap and easy to use.
I would also pull and check every fuse related to the ignition circuit. I recently had a problem with my sisters car and went to the trouble of replacing the crank sensor thinking that was the issue and it turned out to be a blown fuse.
Go to Ford Fuel Injection How To Run a Self-Test to find out how to pull codes without a code reader. Or you can buy a code reader from your local auto parts store. I bought this one from O'Reilly for about $30. http://www.etoolcart.com/ProductImag...tic/3145-L.jpg It's their 3145 model- it's cheap and easy to use.
I would also pull and check every fuse related to the ignition circuit. I recently had a problem with my sisters car and went to the trouble of replacing the crank sensor thinking that was the issue and it turned out to be a blown fuse.
Elder User
Joined: Jun 2010
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From: TX
I have replaced the PIP sensor, ignition control module (gray one from pep boys), tried a black ignition control module from the bone yard, new TPS, new coil, new ignition switch, new starter relay, new battery, new fuel pump, new computer, new spark plugs, wires, cap, rotor, and so on.
The freaking distributor. Haven't replaced it yet just tried a used one. However mine kept on misfiring and was never stable after the pick-up coil was replaced recently. Have to get a new one now since it's my DD.
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Thanks for your help, there were no codes on the computer. i guess it could be a bad coil from checker (maybe).
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Added a couple of grounds, the thing is frickin pissing me off, drove it around yesterday no problems but my daughter wants to start driving it again and I am scared to let her, last time she was stuck in an intersection and it took forever for someone to help her.
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Post Fiend
Joined: May 2009
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From: HOUSTON, TX
what about the cat. converter I had that problem once on my expedition, I think you can pull the sensor off and run it like that to bypass it to get somewhere to change them out, If it happens again maybe something to look at.
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I have a 1978 bronco powered by a 1994 fuel injected 460. The Bronco ran great for about 4 years then it started to die on me, I could drive it for days with no problems then one day I would drive a couple of miles then it would quit. I have replaced the PIP sensor, ignition control module (gray one from pep boys), tried a black ignition control module from the bone yard, new TPS, new coil, new ignition switch, new starter relay, new battery, new fuel pump, new computer, new spark plugs, wires, cap, rotor, and so on. I have checked for shorts, nothing, when it kills while I am driving it will back fire after a minute or two the it will run, some times it will die and will not start for hours. There is power to all of the modules injectors every thing but it does not have a spark. Some one please help, before I take it to the desert and use it for target practice.
BigLar
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The truck didn't have a cat, when I put the motor in the bronco I used a painless wire harness for a 5.0. I had to change a few wires around but it ran great for about 20k miles (4 years) my daughter drove it for about 4k miles the it started acting up. I have never checked the fuel pressure because it ran so great, if the pressure is low it would still have a spark right? I know the computer is working because when it dies it is still throwing fuel into the motor because when the spark comes back it throws a flame out the exhaust and a hell of a bang. I bought the PIP sensor from ford could it be bad? I love this site your all great people.