2003 F-350 6.0 Cuts out when accelerating - Ford Powerstroke Diesel Forum
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Old 10-27-2012, 02:23 PM
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2003 F-350 6.0 Cuts out when accelerating

I just bought a 2003 f-350 6.0. Pretty much from day 1 it will cut out while accelerating. But if i disconnect the batteries for a min and reconnect the truck will run perfect for a while, then back to the same problem. I have had the ficm, map sensor, icp sensor(which was throwing check engine codes),back pressure sensor, and fuel filters changed. Also when this happens it sounds like air is blowing off the motor on the driver side of motor and turbo sound gets more throarty. The truck only has 70,000 miles. Any Advice???

Last edited by NickIPC; 10-27-2012 at 04:22 PM.
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Old 10-27-2012, 05:11 PM
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Do you have a scan tool of any sort?

Was it the icp throwing the code?

Last edited by mhatlen; 10-27-2012 at 05:15 PM.
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Old 10-27-2012, 06:03 PM
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it could be a bad vgt solenoid. since it's so intermittent I wouldn't suspect a boost or exhaust leak.

A leaking or failing ICP sensor would be a good place to start but you say it's already been replaced. If it's still throwing ICP codes you may have a problem with the harness near the sensor. Oil will quickly deteriorate the insulation and cause problems.
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Old 10-27-2012, 07:17 PM
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i dont have a scanner but i will hve it scanned by a friend tomorrow. I cant remember the exact code. Also i have changed the VGT solenoid. What harness is the one your reffering to so i can relay this to my mechanic? Thank you for the advice. Any info helps. I'm tired of tossing monry into this truck for the same problem.
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Old 10-27-2012, 07:21 PM
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The one to the icp itself, often when the icp fails it leaks through the pigtail plug and causes resistance by itself and being the icp is a variable resistance sensor it can cause a problem.

You can unplug the icp and see if it changes the way it runs, but getting icp and ipr values will let you know exactly how your hpo system is doing.
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Old 10-27-2012, 07:33 PM
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Good to know. When we changed the sensor was oil where the harness plugs in. Will the truck run and drive with this sensor unplugged?
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Old 10-27-2012, 08:16 PM
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it may run but I doubt you'll be able to drive it far
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Old 10-27-2012, 08:51 PM
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thank you. I was reading a few posts about this harness and found a few people that said this harness was discontinued for the 2003 but is still availible for 2004 and up. Do you know where i can purchase one if needed. Also can this problem be solved by just cleaning the harness where it plugs in?
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Old 10-27-2012, 09:12 PM
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You dont want to keep it unpluggged, it puts ipr into default and basically the pcm guesses where to set it at through some of the sensors and it can easily run it low on pressure and it can run horrible at upper rpms. It's that way for diagnostic reasons not as a band aid.lol
You can try dipping it in and out of some acetone or a carb cleaner just dont let wires or pigtail to get soft. You do want it oil free, if you can do that I think you will be fine.
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Old 10-28-2012, 11:05 AM
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Thanks For the advice. I will try that and see what happens.
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