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Old 04-25-2013, 10:48 AM
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I Broke It?!

Ok heres teh scoop. I think I broke my truck!

Its a "new to me" 08 F350 6.4 KR with 166K on the odometer.

Runs great! Save a little bit of occasional white smoke while parked or under firm acceleration. I understand this is somewhat common and I found where Ford had recalled this model for this problem and "reflashed" the PC with an updated program.

It also has a CEL that has been on since Ive hard it (about 3K miles). The reason for this CEL as I discovered is that previous owner gutted the DPF. Its still there sensors and all, but DPF is hollow!

Had no problems thus far. Yesterday, slow driver pissed me off so I stepped hard on the accelerator (100%) to pass. Truck took off and laid down a thick cloud behind me of grey/black smoke.

As I let off...wrench light came on and RPM is now limited to 1900. (limp mode)

What I think I did: I think I pissed off the emmisions / temp sensors off in the hollow DPF and thus went into limp mode. I guess Ive been running this risk because of the DPF and just been lucky so far?? IDK

Maybe I broke something else?

How do I reset the wrench?

Thanks
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Old 04-25-2013, 10:56 AM
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You absolutely cannot run a hollow dpf! The truck is still going into regen and there is no filter there. You have to tune and physically delete the dpf. The truck went into limp mode for a reason and I would no take it out of limp mode until you have a new dpf in there it tune and delete.


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Old 04-25-2013, 11:00 AM
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Ok please explain why I absolutly cannot run a hollow DPF?

I know its supposed to throw the sensors and put into limp.

But I bought the truck with a hollow DPF and its been running just fine for 3K. Untill that is, I tried to drag race it passing some jerk talking on a cell phone.

Give me more
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Old 04-25-2013, 11:26 AM
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No one know eh...I was afraid of that
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Old 04-25-2013, 11:41 AM
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Listen your trucks screwed, buy a dpf off of eBay, and get it reflashed by ford.... buy a offroad tuner and put that gutted dpf back on

Trust me my friend had a truck like that... it still hasn't gotten fixed
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Old 04-25-2013, 05:00 PM
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I'm pretty surprised it's run for 3k with a hollow filter on it not in constant regen or limp mode.

You need to put a DPF on it, or tune it out.
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Old 04-25-2013, 05:01 PM
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You'll need to pull codes first and see what codes you have right now, and address it from there.
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Old 04-25-2013, 06:46 PM
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Ok so I was on my way to buy a code reader anyways.

Which BTW Im pretty impressed with the $79 ODBII scanner I got from Harbor Freight. Its got a color display and is real easy to use. Especially if you grab a 20% off coupon it was a little over 60 bucks.

Ok so back to the truck. I ran the codes and it had the same two codes its been throwing since I bought it. DPF circuit sensor

I cleared them out and voila no more wrench...However, Im pretty sure the DPF codes will come back on tomorrow.

I honestly don't see how this is a bad thing. Its not stuck in regen, it dosn't limp (apperently unless I hammer down) and I dont have to worry about the DPF clogging up. I still get the "cleaning exhaust filter" message from time to time, every few hundred miles. Best of all it looks completely stock.

Other than the MIL light being on, whats the problem?
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Old 04-25-2013, 06:48 PM
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Oh and yes I do plan on doing a DPF delete.

As soon as I can figure out all the smoke and mirrors around the tuner thing.
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Old 04-27-2013, 09:21 AM
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get in contact with h&s performance, they can at least answer the tuner questions. were to buy is your choice.

i do not work for any performance company, serving our country.
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