Fuel Pressure Regulator Issues

DcMoore

Member
Joined
May 18, 2011
Messages
722
Reaction score
0
Location
Amarillo, Tx
Last week I was pulling my camper and I get a P228F(Regulator Exceed Control Limits) and P0088(Fuel Rail Pressure Above Max Limit). I cleared the codes and all was well. Got to the destination, shut the truck off, restart, and code P0088 comes back.

Once the truck was running I was able to clear the code and it got us home. No change in difference between actual and desired fuel pressures. The next day driving to work I tried to clear the code but it kept coming back. Fast forward, new regulator installed and it is still throwing the P0088 code. See the photos below.

Regulator that I pulled out - no rust but destroyed.
attachment.jpg


New Regulator - for comparison
attachment.jpg


Pulled the metering valve (Exergy MPROP) and it is fairly clean. The other side of the valve is super clean.
attachment.jpg


Does anybody know what is going on here? Should I replace the fuel rail sensor or the metering valve? I don't want to run it long and destroy another regulator.


Thanks!
 

Attachments

  • 20201203_213016.jpg
    20201203_213016.jpg
    160.6 KB · Views: 129
  • 20201203_205923.jpg
    20201203_205923.jpg
    175.9 KB · Views: 117
  • 20201203_220616.jpg
    20201203_220616.jpg
    187.2 KB · Views: 117
Last edited:

DcMoore

Member
Joined
May 18, 2011
Messages
722
Reaction score
0
Location
Amarillo, Tx
The regulator is off of the fuel rail. The metering valve in the last photo is off of the pump. The last pump that went out had metal everywhere. This is a used pump but my new 15+HPFP arrvies today.
 

DcMoore

Member
Joined
May 18, 2011
Messages
722
Reaction score
0
Location
Amarillo, Tx
It's possible that the diverter within the rail is hitting the regulator. A new, warrantied, OEM rail was sent out by Pensacola Fuel Injection this morning.
 

DcMoore

Member
Joined
May 18, 2011
Messages
722
Reaction score
0
Location
Amarillo, Tx
Pulled the hpfp and replaced it with a 15+ pump (was going to do that anyways). Replaced the fuel rail along with fuel pressure sensor and regulator. Fixed the issue.

I did not install the Exergy MPROP from my old pump but I will next weekend.
 

Latest posts

Members online

Top