CP4.2 Mis Diag Root Cause Failure
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From: The Great State of Texas
CP4.2 Mis Diag Root Cause Failure
Just some information to familiarize yourself if you ever have to deal with a CP4.2 failure while your truck is under warranty. I've heard this before about dealers charging customers on CP4.2 fuel system repairs when it should have been covered under warranty. Makes you wonder how many people were told Ford denied warranty when it was really the dealer hosing the customer. 
Hotshot
Joined: Oct 2006
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From: Texas
Longer than that if one includes all makes and models. I had a 1983 GMC with the GM 6.2L diesel that they tried to pull similar BS with me way back then.
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@FishOnOne , thanks for the video. I watched it all the way through. As a weekend mechanic, I would be at the mercy of the dealership on something like this. Did he mention the name of the dealership and I missed it?
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From: West Virginia
Here's the thing. He hasn't resolved the problem yet and I bet he gets a discount at best. Ford's legal position on these CP4 pump failures is that once the metal debris infiltrates the rest of the fuel system, the fuel is now contaminated and not warrantable.
I'd really like to know how this gets resolved.
Of course Ford is hit and miss on other warranty claims. Back in 2017 when all we F350 dually owners started having corrosion issues that caused air loss in our wheels some guys got new wheels under warranty while some (like me) could not. I hope he successfully resolves this issue in his favor but due to all the litigation that Ford continues to be involved in surrounding the CP4, I doubt they are going to set a precedent that favors the customer.
I'd really like to know how this gets resolved.
Of course Ford is hit and miss on other warranty claims. Back in 2017 when all we F350 dually owners started having corrosion issues that caused air loss in our wheels some guys got new wheels under warranty while some (like me) could not. I hope he successfully resolves this issue in his favor but due to all the litigation that Ford continues to be involved in surrounding the CP4, I doubt they are going to set a precedent that favors the customer.
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Lead Driver
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@FishOnOne , thanks for the video. I watched it all the way through. As a weekend mechanic, I would be at the mercy of the dealership on something like this. Did he mention the name of the dealership and I missed it?
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https://www.prnewswire.com/news-rele...301175076.html
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Lead Driver
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…”What is more, the "repair" cost for a catastrophic CP4 failure is frequently upwards of $10,000, a cost which Ford generally refuses to cover under warranty by blaming the consumer for "fuel contamination" — contamination which is caused by the shredding CP4 itself.”
https://www.prnewswire.com/news-rele...301175076.html
https://www.prnewswire.com/news-rele...301175076.html
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this is bs on fords part….they use rust indications on a cheaply made ferrous metal case of the high pressure sensor….this cheaply made sensor will always show oxidation since diesel fuel is hydrostatic sensitive and will always absorb moisture . If ford used stainless steel on this sensor case …there would be no rust indication in the system.
these pumps fail becuase the plunger rotates. And spins out of cam bearing alignment. Newer pumps are pinned so they won’t rotate…ford would t require that of Bosch if water, def, gas was the root cuase of cp4 failures.
also.. if there is water in fords fuel system that’s on ford since that would mean their water separator does not work.
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Lead Driver
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this is bs on fords part….they use rust indications on a cheaply made ferrous metal case of the high pressure sensor….this cheaply made sensor will always show oxidation since diesel fuel is hydrostatic sensitive and will always absorb moisture . If ford used stainless steel on this sensor case …there would be no rust indication in the system.
these pumps fail becuase the plunger rotates. And spins out of cam bearing alignment. Newer pumps are pinned so they won’t rotate…ford would t require that of Bosch if water, def, gas was the root cuase of cp4 failures.
also.. if there is water in fords fuel system that’s on ford since that would mean their water separator does not work.
these pumps fail becuase the plunger rotates. And spins out of cam bearing alignment. Newer pumps are pinned so they won’t rotate…ford would t require that of Bosch if water, def, gas was the root cuase of cp4 failures.
also.. if there is water in fords fuel system that’s on ford since that would mean their water separator does not work.
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Great post Troy and hence, why I run additive...
With that said, either the fuel was out of spec or something, or the CP4 just decided, maybe because of a defect or something, to take a schitt....
With that said, either the fuel was out of spec or something, or the CP4 just decided, maybe because of a defect or something, to take a schitt....
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Joined: Jul 2023
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Here's the thing. He hasn't resolved the problem yet and I bet he gets a discount at best. Ford's legal position on these CP4 pump failures is that once the metal debris infiltrates the rest of the fuel system, the fuel is now contaminated and not warrantable.
I'd really like to know how this gets resolved.
Of course Ford is hit and miss on other warranty claims. Back in 2017 when all we F350 dually owners started having corrosion issues that caused air loss in our wheels some guys got new wheels under warranty while some (like me) could not. I hope he successfully resolves this issue in his favor but due to all the litigation that Ford continues to be involved in surrounding the CP4, I doubt they are going to set a precedent that favors the customer.
I'd really like to know how this gets resolved.
Of course Ford is hit and miss on other warranty claims. Back in 2017 when all we F350 dually owners started having corrosion issues that caused air loss in our wheels some guys got new wheels under warranty while some (like me) could not. I hope he successfully resolves this issue in his favor but due to all the litigation that Ford continues to be involved in surrounding the CP4, I doubt they are going to set a precedent that favors the customer.
I was a ford tech and this dealer didn't go through the process for warranty. They never tried to submit it and got caught.
I did have to go through customer service rep for fleet. And it did get handled. Took about two weeks.
So that's the update. I think I did a video on the update. May not have.
Last edited by Beard Ford Tech; Apr 1, 2024 at 11:40 AM.
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I got it resolved. Completely covered under warranty.
I was a ford tech and this dealer didn't go through the process for warranty. They never tried to submit it and got caught.
I did have to go through customer service rep for fleet. And it did get handled. Took about two weeks.
So that's the update. I think I did a video on the update. May not have.
I was a ford tech and this dealer didn't go through the process for warranty. They never tried to submit it and got caught.
I did have to go through customer service rep for fleet. And it did get handled. Took about two weeks.
So that's the update. I think I did a video on the update. May not have.