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#12
03-11-2014, 03:45 PM
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yeah spare parts I will give that a try this Saturday busy with work right now. and will let you know. I myself was never a big Ford fan but the company bought it for me couple years back no one would say no to a free truck. has ran without a problem for the last 6 years not even a hick up until now.
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#14
03-11-2014, 08:41 PM
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ecu takes position signal from crank position sensor and cam position sensor. generally the coil driver and injector driver are separate, The ecu fires each independantly
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#15
03-11-2014, 11:24 PM
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Yes spare parts you are definitely correct on that I replaced both camshaft position sensors for s**** and giggles when It started misfiring. I have a commercial account at Advanced Auto I get them for like $10. I had another friend with this same engine that had his cam phasers fail and that was quite a mission to do. going to check wire harness for shorts before I ordered Used ecm don't really feel like having to pay to reprogram chip Keys.
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#16
03-12-2014, 05:56 AM
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pot an ohm meter on each injector
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#20
03-16-2014, 08:25 AM
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that's are far as i know, I'm not that familiar with the Ford trucks, I was just going thru basic diagnosis that I would use on any engine. I guess the next thing is to check the harness, see if the injector harness terminates to a plug that goes to the main harness. The injectors fire using a ground pulse from the ECM, so check the input wire to each injector thru the harness. See if you can find a wiring diagram on line and do a pin out resistance check from the ECM to teh injector connection. You may need to get a long jumper wire to extend you reach with the Ohm meter. It does sound like a computer taking a crap on you. Try letting the engine run, then tap on the computer with a screw driver handle and see if it changes the way the engine runs, if it does, that's a sure sign the ECM is bad
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