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Old 04-18-2013, 12:11 PM
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6.4 constantly in regen

Hey guys my father in-laws truck is constantly in regen with a check engine light on. Dash says "Cleaning exhaust filter". Hes got a '08 6.4. The truck seems to be down on power. The dealer said it could be one of 15 things when he ran the scan on it. To much work going on right now for the truck to be down for acouple of days so they can figure it out. Any ideas of what could be happening? Should we just bite the bullet and take it in, or will it be ok for awhile? Also whats the cheapest way to delete EGR, DPF and tune? Ive seen some tuners that will turn off the EGR so you don't have to delete it, and as long as you delete the DPF it will be good. Is this true or should everything be deleted, and not just turned off? I know theres a lot of questions here. Thanks for the help in advance.
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Old 04-18-2013, 01:41 PM

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I would check the connection on all three sensors in the exhaust. I think there is one on the DPF and CAT and maybe a third in there somewhere. It been a while since I did mine. Maybe a wire cracked or a sensor got bent by something, although unlikely. The tuner question is addressed in 100's of threads.

Good Luck!
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Old 04-18-2013, 01:59 PM

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Yeah it could be a lot of different things, but it sounds like your DPF is due for replacement or the exhaust pressure sensor is giving the ECM a false reading causing constant regen.
Do your pa-in-laws truck a favor and get yourself one of the "race" tuners or older H&S mini-max and a DPF delete pipe. H&S has the ability to "disable" the EGR when you have a DPF delete pipe installed.
I know the prices on a H&S tuner that still has the DPF delete ability has shot through the roof and a DPF delete pipe will cost $170-$250, however this will be a small expense compared to the repair bill that your heading for if you keep using the truck like that. If your DPF is bad, it's going to cost you about $2000 anyway to have it replaced.
Hope this info helps out some-Good luck
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