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6.4L Power Stroke Engine and Drivetrain Discussion of the 6.4L Power Stroke diesel engine and drivetrain in the 2008-Up Super Duty trucks. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.4L Power Stroke engine.

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Old 02-25-2013, 08:29 PM   #1 (permalink)
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Fried PCM

Hey everyone I have a quick question or two regarding my 2009 f-350. I own a small construction business and use my truck a lot to pull an enclosed tool trailer, but the truck just wasn't able to pull the trailer very well at highway speeds. The truck kept over boosting so I took it to the shop and the diesel tech couldn't figure out what was wrong with it so he decided to check the turbos but they both came back fine. So I went and picked up my truck and I started getting a warning on my programmer (when I bought the truck it had 80,000 miles and had a dpf filter removal and a edge programmer) so I pulled over and looked up the code and it had to do something with the dpf which is removed so I cleared the code and the truck would not start I had fried the PCM. So I took it back to the shop and the diesel tech had it for 2 weeks and finally got the new PCM put in and the truck fired right up but he is telling me not to use that programmer again but I think I have to re-flash the computer to tell it that the dpf filter is gone. He thinks that everything will be ok with no programmer. What do you guys think? Thanks for any help.
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Old 02-25-2013, 09:26 PM   #2 (permalink)
 
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Nope. If you don't tell the computer there is no stupid-ass DPF, it'll try to regen like crazy.

Give us a call we still have a few tuners left.
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Old 02-25-2013, 09:30 PM   #3 (permalink)
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What would be the best tuner for me? Just mainly for pulling
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Old 02-25-2013, 10:24 PM   #4 (permalink)
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If the sensors are missing, the PCM will still read them, but interpret them as an overtemperature condition, ie, the CAT is overheating and/or the DPF is overheating. In that case, it'll shut down the engine and prevent it from starting until the sensor readings return to normal.

The PCM will expect a DPF pressure reading if the sensors are there or not. If it doesn't see something reasonable, it'll supposedly throw a code. Eventually, it'll start a regen after 660 miles or so whether there's a DPF or not and it'll belch white smoke nonstop
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Old 02-25-2013, 10:50 PM   #5 (permalink)
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I am not sure exactly what the code was that it threw when I got it back the first time but I do remember that it had something to do with the sensors on the dpf filter. So would that be the reason that the PCM messed up and wouldn't allow the truck to start again?? And do you think that as soon as this new PCM throws the same code it will happen agin? Basically I am thinking that my options are to either put a new dpf filter on, which I really don't want to do or I am going to have to get a new programmer. But if I get a new programmer and the trucks sensors aren't hooked up right from when he pulled out both turbos the same will happen. Kind of stupid dealing with this diesel tech he doesnt seam to know what is really going on
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Old 02-26-2013, 06:42 AM   #6 (permalink)
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the whole problem centered around the fact that you did not have the ford stock program on it when you took it in.

When he accessed it then all messed up.

You have to have a tuner without the dpf. or it will be in regen all the time.
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Old 02-26-2013, 06:07 PM   #7 (permalink)
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if you have an F350 that won't pull a tool trailer a tuner is the least of your needs.

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