Fuel pump questions
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Cross-Country
Joined: Nov 2020
Posts: 74
Likes: 13
From: Aurora Co
Hi,
Do you have Forscan? (Scan program to run for codes). If not, it is an excellent program and inexpensive ($15 for annual full license and another $50 or so for their OB2 adapter). It is something you really need if you want to work on these yourself. Did the mechanic scan and did he get any current codes?
Link to Forscan: https://forscan.org/index.html
scott
Do you have Forscan? (Scan program to run for codes). If not, it is an excellent program and inexpensive ($15 for annual full license and another $50 or so for their OB2 adapter). It is something you really need if you want to work on these yourself. Did the mechanic scan and did he get any current codes?
Link to Forscan: https://forscan.org/index.html
scott
I was using the ez link interface to read codes and check the pressures
FTE Legend
Joined: Mar 2017
Posts: 31,854
Likes: 9,164
From: Western NY
No sir, not to me. If the CP4 had been on the verge of failing, you would not have been able to drive it for months AND if the CP4 was not maintaining commanded pressure you would most likely been getting codes.
CP4 is reliant on receiving fuel via the lower pump, but I can't see where CP4 would contribute to the DFCM making noise. Don't you get the noise from the lower pump Key On Engine Off?
CP4 is reliant on receiving fuel via the lower pump, but I can't see where CP4 would contribute to the DFCM making noise. Don't you get the noise from the lower pump Key On Engine Off?
You did get a P0087, so that could be CP4, but you got the P008A and noise from DFCM which means it was not supplying enough fuel to the CP4 (and it is easy to damage the CP4 with low fuel or starvation as fuel is its lubricant), but
The P0087 could also be a pressure sensor or the regulator on the fuel rail and there is also an orifice in the rail which is known to become dislodged. CP4 and / or any of these could cause a P0087, but you aren't getting a code AND they would not cause your DFCM to make noise.
Obviously, it is up to you what you do. The $16k the mechanic quoted is if the CP4 grenades and makes metal, it contaminates everything in the fuel system necessitating replacing everything; pump, injectors, fuel rails etc and cleaning out what isnt replaced, e.g.; fuel tank.
scott
The P0087 could also be a pressure sensor or the regulator on the fuel rail and there is also an orifice in the rail which is known to become dislodged. CP4 and / or any of these could cause a P0087, but you aren't getting a code AND they would not cause your DFCM to make noise.
Obviously, it is up to you what you do. The $16k the mechanic quoted is if the CP4 grenades and makes metal, it contaminates everything in the fuel system necessitating replacing everything; pump, injectors, fuel rails etc and cleaning out what isnt replaced, e.g.; fuel tank.
scott
Thread Starter
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Cross-Country
Joined: Nov 2020
Posts: 74
Likes: 13
From: Aurora Co
I’m dreading this but I am thinking of pulling the regulator from the cp4 and look for metal which I think will once and for all let me know if it is going out
also if it isn’t I should put the disaster prevention kit on to protect me until I can upgrade to the dcr pump
also if it isn’t I should put the disaster prevention kit on to protect me until I can upgrade to the dcr pump
Thread Starter
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Cross-Country
Joined: Nov 2020
Posts: 74
Likes: 13
From: Aurora Co
already ordered one
I had one but it was the first gen spe which was proven to not work effectively so I got the s&s one
I had one but it was the first gen spe which was proven to not work effectively so I got the s&s one
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Cross-Country
Joined: Nov 2020
Posts: 74
Likes: 13
From: Aurora Co
Is it normal for the fuel to drain back when the regulator is removed?
When the refit was out I heard a slight sucking sound from the opening
When the refit was out I heard a slight sucking sound from the opening
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FTE Legend
Joined: Mar 2017
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From: Western NY
If the system was still under pressure, I could see that maybe happening... i can't remember what happened when i pulled off the FCA/MPROP valve...
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Cross-Country
Joined: Nov 2020
Posts: 74
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From: Aurora Co
Well the motor craft pump seemed to do the trick!
I also found Spray and Stay lube works great for the threads and o ring I didn’t feel any resistance putting it on
thanks again for all the help!
I also found Spray and Stay lube works great for the threads and o ring I didn’t feel any resistance putting it on
thanks again for all the help!
Cross-Country
Joined: Dec 2015
Posts: 50
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From: SC
Excellent news!!
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