04 excursion no start/ stalling out.. help!!!
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the ficm controls the injector timing and it needs signals from both crankshaft sensor and the camshaft sensor. if either sensor fail to give a signal the truck wont run. but it will not set the check engine light as the diesel have a different emissions system then a gas engine.
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Joined: Jul 2005
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the ficm controls the injector timing and it needs signals from both crankshaft sensor and the camshaft sensor. if either sensor fail to give a signal the truck wont run. but it will not set the check engine light as the diesel have a different emissions system then a gas engine.
Geeze, I need to file this in the electronics / electrical fixes file cabinet.
I deal with a lot of wiring / connector / electronics / software / glitches.
Thanks
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Check the CMP wiring. The sensor very seldom fails. If I can post this document it will tell you how to diagnose the sync/no sync problem.
Basically it says if you have no FICM sync it's limited to the circuit between the FICM and PCM AND the CMP sensor circuit from the PCM to the sensor. That's why I'd check that circuit first. Sometimes the o-ring on the sensor fails and oil contaminates the connector giving a corrupt signal. That would be an easy temporary "fix".
http://www.fordtechservice.dealercon...FICM_Guide.pdf
Basically it says if you have no FICM sync it's limited to the circuit between the FICM and PCM AND the CMP sensor circuit from the PCM to the sensor. That's why I'd check that circuit first. Sometimes the o-ring on the sensor fails and oil contaminates the connector giving a corrupt signal. That would be an easy temporary "fix".
http://www.fordtechservice.dealercon...FICM_Guide.pdf
Hotshot
Joined: Dec 2003
Posts: 15,368
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From: Stuttgart, Ar
yes you are correct but i checked the wiring for any chaffing none. plus you have to unbolt the powersteering bracket to get at the sensor for the 60 bux for the part i would rather just replace it while im in there to inspect it. If it still has a loss of signal then i will just rewire the circuit.
FWIW--I'm NOT saying the sensor isn't bad, it's just very very rare on a 6.0 plus you can get a CMP code from a stall event. I had the same thing happen with my 04 and never did find the problem. It simply went away on it's own. You have diagnostic tools I didn't have and seem to have a plan. I was just trying to save you $60 for an unneeded sensor. Please let us know what you find.
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Joined: Dec 2010
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Check the CMP wiring. The sensor very seldom fails. If I can post this document it will tell you how to diagnose the sync/no sync problem.
Basically it says if you have no FICM sync it's limited to the circuit between the FICM and PCM AND the CMP sensor circuit from the PCM to the sensor. That's why I'd check that circuit first. Sometimes the o-ring on the sensor fails and oil contaminates the connector giving a corrupt signal. That would be an easy temporary "fix".
http://www.fordtechservice.dealercon...FICM_Guide.pdf
Basically it says if you have no FICM sync it's limited to the circuit between the FICM and PCM AND the CMP sensor circuit from the PCM to the sensor. That's why I'd check that circuit first. Sometimes the o-ring on the sensor fails and oil contaminates the connector giving a corrupt signal. That would be an easy temporary "fix".
http://www.fordtechservice.dealercon...FICM_Guide.pdf
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