serious help needed please... - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 7 (permalink) Old 03-26-2008, 05:18 AM Thread Starter
 
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serious help needed please...

I have a 2002 F350 7.3 and have a problem with it. It keeps making the "CPS" failure symptoms. It dies when running and won't start for a while (10 - 30 minutes) and then it runs again but dies again. I have changed the CPS sensor 5 times in the past 4 days and it keeps doing the same thing. I have no CEL and I hooked up the scanner and reads nothing and there are no codes saved in the memory either. I tried another PCM and that did not fix the problem. I am running out of ideas here. Any help would be greatly appreciated.
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post #2 of 7 (permalink) Old 03-26-2008, 06:00 AM
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is your fuel bowl half full???? if it is it could be a low pressure pump. not to sure but it is just in idea

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post #3 of 7 (permalink) Old 03-26-2008, 02:03 PM
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It's your IPR. Mine did the exact same thing. CPS-like stalling and no codes.
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post #4 of 7 (permalink) Old 03-26-2008, 03:51 PM Thread Starter
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Quote:
Originally Posted by Pocket
It's your IPR. Mine did the exact same thing. CPS-like stalling and no codes.
Injection Pressure Regulator? If yes, then I will defenitely check for that. Hopefully thats the propblem. Thank you very much for your input.
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post #5 of 7 (permalink) Old 03-26-2008, 03:55 PM
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Quote:
Injection Pressure Regulator?
Yep, it's on the back of the HPOP. Check the nut on the top first to see if it's loose. Sometimes that's the cause. If not, then the IPR itself is sticking. A few have cleaned it and had no issues, some others cleaned it and still had problems. If you do buy a new one, check Ebay for a better price than the dealership.
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post #6 of 7 (permalink) Old 03-26-2008, 04:20 PM Thread Starter
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Quote:
Originally Posted by Pocket
Yep, it's on the back of the HPOP. Check the nut on the top first to see if it's loose. Sometimes that's the cause. If not, then the IPR itself is sticking. A few have cleaned it and had no issues, some others cleaned it and still had problems. If you do buy a new one, check Ebay for a better price than the dealership.

Will do, thanx again, bud.
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post #7 of 7 (permalink) Old 03-26-2008, 06:12 PM
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It's very likely it's just the O-rings on the IPR. The o-ring kit is like $15.00 vs. over $100 for a new IPR. I'd check those first.

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