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2008 CHU low power after regen


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Truck running good driver did sitting regen. Truck feels like it is derated, no lighting bolt. Ck for codes found 128 pid173 fmi0 inactive 20x, 140 sid 253 fmi 2 active but no lighting bolt on. clear codes 140 still stays active. Checked soot level at 19%. Drove bobtailing truck about 30 miles turbo pressure would never go over 7 lbs exhaust would go to 800-1000 degree on hill. Came back ck soot level was 30%. Ck DPF pressure and ok. Truck will barely pull itself.

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