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Old 01-16-2008, 07:06 AM
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lose of power

After changing my water pump i had the problem occur that is described as the CPS going bad, the jerking and dieing problem. Now i have replaced the fuel filter and have a check engine light and a dramatic loss in power that kicks in around 2000rpm. The light comes on just as the lack of power sets in. then the power lag stays until i turn off the truck and crank it back up. I drove it for 20 miles like this this morning. Quite honestly, it sucked. Does anyone think the CPS could cause these problems also. I haven't had the chance to read the codes yet but wanted to get some opinions before i get off work and head home to roll up my sleeves and dig in to this problem. Any and all opinions are appreciated and welcome. thanks
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Old 01-16-2008, 03:48 PM
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read your codes first, that is going to be your best lead. Cps is possible
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Old 01-17-2008, 04:43 AM
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Replaced CPS, no luck. Does a little better but still no luck. I get the check engine light when the engine is under somewhat heavy throttle. Once it comes on, it stays on until i turn the ignition off and crank back up. After that it does fine until i give it heavy throttle. That is the cycle. I'm gonna check the codes today or tomorrow, borrowed a jeep until then. I'll let ya'll know what i find. thanks.
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Old 01-18-2008, 11:00 AM
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Went to autozone to check codes, no luck. No codes, probably not a compatible scanner. Anyone have anymore suggestions? I been told to check the check valve on the HPOP. Not sure if this is a fix or not. My situation happens during acceleration. Could it be a MAP sensor or exhaust backpressure sensor? Has anyone had this problem and found a solution?
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Old 01-18-2008, 06:37 PM
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Don't think it is the check valve because my understanding is that the check valve holds oil in the hpop pump when the engine is off, doesn't effect the engine when it is running. It's more less an anti-drain back valve. Your right on the scanner, autozone and Advance do not have scanners that can read diesel trucks. Gonna have to get a mech. to read it for you. Might cost a little but better than throwing money away on non needed items.
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