6.0 Stalls without Throttle - Ford Powerstroke Diesel Forum
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Old 07-07-2014, 06:30 PM
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6.0 Stalls without Throttle

I am working on a 6.0 that is beginning to be a bit of a headache. It is a 2005 F-550 Dump Truck with the 6.0, only 60,000 miles. came in for a no start condition, initially found the ipr and ipr wiring to be melted from turbo heat, along with a non oem filter and loose cap on the fuel conditioner on the frame rail. Repaired both of those and test drove. The truck drove fine but would stall if you didn't keep your foot on the throttle while putting the selector into drive or reverse. After test driving now the truck will crank and hit and smoke, occasionally starting. When the truck starts, you can rev it and the motor sounds perfect but as soon as you bring down the rpms to 1,000 it shuts off like you turned off the key, no smoke, no hiccups, just off instantly.

Just replaced:
-lower fuel cap
-fuel filters
-IPR
-IPR Wiring
-cam sensor
-crank sensor
-reprogrammed pcm, ficm, and tcm

On the Scanner while cranking
- Ficm sync
-icp ~1500
-IPR ~50%
-Ficm 48.5 (tried another one as well)
-Injectors all buzz
-relative compression is all around 100%

if anybody has any idea of what to try next, im all ears! appreciate it in advance
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Old 07-07-2014, 06:54 PM
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6.0 Stalls without Throttle

You have any way of checking fuel pressure? There is a port on the secondary fuel filter you can put a gauge on it and see what you are getting just to confirm.
Can you hear the hfcm running koeo? Should run for about 30 seconds.
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Old 07-07-2014, 08:48 PM
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Can hear pump, fp is 60 running
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Old 07-08-2014, 05:54 AM
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Morning bump, any ideas??
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Old 07-08-2014, 06:05 AM
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May be off a little but are the batteries and alternator healthy?
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Old 07-08-2014, 07:07 AM
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Could it be possible your icp sensor is acting funny? I am just throwing ideas out there. Try disconnecting the icp from the passenger side valve cover and try to start it. When these sensors go haywire the trucks do funny things! This is definitely a weird one. Keep us updated!
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