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Old 10-21-2011, 04:09 PM
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crank but no start

A week ago my truck would not start one morning, so I put a cps in it and it fired and drove great for one whole week. The other day same deal, no start in parking lot at work, swap cps and truck starts, but it ran like crap the whole way home. I decided to go to the local stealership and buy two genuine Ford cam sensors. I installed one today, and the truck started, ran for about 35-40 seconds then died and would not start again. This led me to believe my problem was elsewhere. I checked many things including, oil, fuel level, fuel pressure, and even removed my chip completely from the pcm. Still no start. After a few attempts, the wait to start light stopped coming on. I then unhooked the fuel bowl heater and replaced the fuse under the hood, and it would again come on. Yet, still no start. No smoke comes from the tail pipe, therefore I know the truck isn't firing the injectors. The glow plugs are not the problem, it's 70 out and it started the other morning at 28. The tach isn't dead when cranking the truck. I need some advice, I don't want to put this last cam sensor in it, only for it to run for less than a minute. Truck has 80k miles on it.
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Old 10-21-2011, 06:49 PM
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Check the wiring to the IPR and the the fuel bowl harness in general as diesel fuel can do a number on the wiring insulation (inside the loom too), causing shorts and other problems. Check the IPR "tin nut" that holds the solenoid coil on to make sure its snug. I guess I's also recomment an inspection of the wiring down near the CPS too. Cheers!
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Old 10-21-2011, 08:52 PM
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The wiring harness is all fine, this thing is 10k mile clean under the hood. I honestly don't believe the fuel bowl heater is bad or what caused the blown fuse under the hood either, but I unplugged it just to rule out another possibility. The truck has thrown no codes, and I even let it sit for several hours with the batteries disconnected. The previous owner recently replaced one of the batteries, and this has me curious.
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Old 10-21-2011, 09:00 PM
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well i had the same problem with a gas job engine and it was a blown head gasket but i dont know diesels
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Old 10-23-2011, 06:17 AM
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WTS still not coming on? If not then problems Is probably in With your PCM


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Old 10-23-2011, 07:11 PM
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WTS light is now coming on after I replaced the fuse under hood. I actually got the truck to start yesterday, by jumping it with my cummins. After I jumped it, it ran great, and continued to start, although it was warm outside so the glow plugs didn't have to cycle long. I think it may be time for a new set of batteries. Yet I still don't understand why it wouldn't start at first after putting the Ford sensor in it, or why it blew the under hood fuse.
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Old 10-24-2011, 08:08 AM
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Make sure that fuel heater wire is not shorting on anything. Check that fuel bowl wiring harness if you have not done so already! Cheers!
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