7.3 CRANK NO START - Ford Powerstroke Diesel Forum
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Old 11-25-2009, 04:57 PM
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7.3 CRANK NO START

I have a 2001 7.3 cranks and doesnt start. I did a buzz test and have p1293 and p1294 (right and left high side open) all injectors ohm good at the uvc. I also have 112v on both sides at the uvc on the center terminal ''E". I think I have the obvious covered, all fuses good , new fuel filter, new cps. I have followed all the tests from all data and this leads me to belive I have a bad IDM. Anybody have any thoughts? Thanks in advance.
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Old 11-25-2009, 05:12 PM
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HOW OLD ARE YOUR BATTS ? I've seen em crank and not start when the batts weren't up to par. The guy put in 2 new motorcraft batts and fixed the problem
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Old 11-25-2009, 05:16 PM
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THE BATTERIES ARE 2 YEARS OLD AND LOAD TEST FINE. I FORGOT TO MENTION THAT THE TRUCK DIED WHILE DRIVING AND NOW I CANT GET ER TO START.
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Old 11-25-2009, 05:23 PM
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might ck out the crank position sensor
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Old 11-25-2009, 05:35 PM
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My 1999 7.3 diesel cranked, no start. It would start with light ether sprayed near, not in the air box. It turned out to be the glow plug relay and the crank sensor. runs great now.
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Old 11-25-2009, 05:38 PM
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+1 on the Cam Sensor
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Old 11-25-2009, 05:41 PM
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Quote:
Originally Posted by HEVYHAULIN View Post
THE BATTERIES ARE 2 YEARS OLD AND LOAD TEST FINE. I FORGOT TO MENTION THAT THE TRUCK DIED WHILE DRIVING AND NOW I CANT GET ER TO START.
Same thing happened to me two-weeks ago. Truck was running. Came to a stop sign and it died. Tried to start it again and it would just crank. No fire from the injectors. Waited a few minutes and it fired again. An hour later it died again and wouldn't fire. The truck sat overnight and it fired the next morning.

Replaced the ICP due to low pressure. Worked for a couple of days, then died again. CPS was replaced. All other sensors appear to be working properly.

My diesel tech put a manual oil pressure gauge on it and it showed low pressure. Not enough pressure and volume to fill the HPOP. Put a new Melling HV pump in. Plenty of pressure. Took it for a drive and it died again.

It seems to only die when the oil gets thin (warm). The oil warms, gets thin and the LPOP drops oil pressure. No issues with the pick-up.

Rebuild time...
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Old 11-26-2009, 04:06 AM
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Do all of the warn lights come on when you turn the key on?
If not check the fuel heater under the fuel filter for shorting out.

What is your ICP pressure during crank?
What is your fuel pressure?
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Old 11-26-2009, 08:46 AM
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i have a similar problem..here is what happened..

last night i powerwashed front end of truck to clean bumper and grille off...the hood was open, it was drizzling.
-then i drove the truck later that night, i hit a pothole and the truck died...it started right back up, but when i put it in drive and pressed on petal, it would die... this happend like 5 times...

note, i just got a new cam shaft position sensor.

i let it sit for like 3 mins and it started up and i made it home...

this morning i was leaving, started truck up and right away it died.

i started it again and it worked fine...i drove about 7 miles to destination, and i had to move the truck in the driveway...SAME THING, started and died quick..

now it wont start at all, it will only crank.

fuel light, service engine and brake lights on, there is a ticking noise coming from underdash board above petals...somewhere in there.

the brake controler acts up when you step on the brake... radio was turned off like the batteray was disconnected... i have aftermarket one so i noticed the time was off...


im hoping something just got wet or a wire is corroded, but i dont know where to start.

help!!
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Old 11-26-2009, 09:04 AM
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if my truck sits out all night it wont start in the morning. When I crank it it get a buzz from underneath the dash. I replaced the starter yesterday and it helped with the slow crank that i was having but i think i have bad battery connections so its not getting the volts it needs. so this morning when it wouldnt start i jumped it and it started no problem. and when i shut it off it starts back up no problem. only doesn't start after it sits for about 4 hours in the cold.
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