need help - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 5 (permalink) Old 06-15-2010, 02:35 AM Thread Starter
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Angry need help

i have an o1 2500 cummins auto when im driven my truck just falls on it face and if i let out of it it starts driven fine but it does this over and over for a few min then it will be ok and the it will star acting up agin i just replaced the tps sencer any help with this problem would be great thanks
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post #2 of 5 (permalink) Old 06-15-2010, 02:47 AM
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Originally Posted by big c777 View Post
i have an o1 2500 cummins auto when im driven my truck just falls on it face and if i let out of it it starts driven fine but it does this over and over for a few min then it will be ok and the it will star acting up agin i just replaced the tps sencer any help with this problem would be great thanks

Did you scan for any codes? I would start there. How bout your fuel filter? when was that last changed? Could also be a sign that the lift pump is failing or has already. If it is then you will be doing a VP44 in the near term. Check for codes first.
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post #3 of 5 (permalink) Old 06-15-2010, 04:27 PM
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sounds like the trucks hopping in and out of limp mode...been there a million times Start by checking for any codes. If you post the codes up here, we'll help ya get a diagnosis.

Greg
My Truck- '02 Dodge Ram 2500 QCLB...ISSPRO Gauges...110hp DDP Injectors...Smarty..TST Comp..Pro52 turbo..BHAF...4" Turbo back to single 8" mitre...converted to NV5600 with SB Street DD

Bro's Trucks- 97 Dodge Ram 2500 5spd 12V...DDP 90hp Injectors...Half-Cut DV's..0 Plate...starwheel turned..kdp & 5th gear fix...17.5deg timing...SB Feramic 13" clutch

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post #4 of 5 (permalink) Old 06-16-2010, 10:07 PM Thread Starter
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the codes are p0122 po460 p1693 i can clear them but they cum right back
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post #5 of 5 (permalink) Old 06-17-2010, 07:14 AM
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That dead pedal that you are describing generally goes hand in hand with 1 of 2 things. Either a failing VP44 or a failing APPS. The code that you are throwing P0122 is APPS input below the acceptable minimum voltage. P1693 is a companion code, all it means is that an error has been detected in either the PCM or ECM. What APPS are you running? That is the direction I would be looking towards right now.
Sean

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