Does anyone know the part number for the low pressure fuel sensor? Are the high pressure sensor and low pressure sensor the same. I’m getting the p0088 code intermittently. Changed the high pressure sensor and still getting the code. Reset the KAM Reset the ECU took the battery cable off. Also I have the XDI evo hpfp. I recently started tuning for E40 and this code came up. Thought it maybe some bad ethanol. Switched back to 93 and I’m still getting the p0088 code.
tscclayton
Fuel pressure sensor?
1 reading
Thanks, yea I didn’t think the range on one would accommodate the other. Just was unable to find a part number for the low pressure sensor. When I search that number now it comes up as being for the mustang but I’m guessing the sensors interchange between vehicles.
Do you know the torque specs for the low pressure sensor?
Update so I replaced the high pressure sensor and I kept getting the p0088 code. So I was thinking maybe the low pressure sensor is malfunctioning, but i figured I would change the hpfp since i have a couple spares just to rule that out, code immediately came up after installing the OEM pump
(and of course flashing the appropriate tune). That ruled that out, hpfp is working. I go to remove the OEM hpfp to put the XDI pump back on. Take all the lines off the OEM pump then go to remove the line from the fuel rail and i hear a slight pop and the pressure releases from the fuel rail out the fuel line spraying fuel( so I'm like hmm that's weird). I install the XDI pump and button everything up prime the system briefly fire the car up and everthing seems fine. So I'm guessing there was some obstruction in the fuel rail causing the erratic fuel pressure. Also changed the purge valve just for good measure. Drove a couple hours and everthing seems fine for now. If anything changes I'll post an update.
Here is a datalog of what the fuel pressue was doing.
datazap.me
(and of course flashing the appropriate tune). That ruled that out, hpfp is working. I go to remove the OEM hpfp to put the XDI pump back on. Take all the lines off the OEM pump then go to remove the line from the fuel rail and i hear a slight pop and the pressure releases from the fuel rail out the fuel line spraying fuel( so I'm like hmm that's weird). I install the XDI pump and button everything up prime the system briefly fire the car up and everthing seems fine. So I'm guessing there was some obstruction in the fuel rail causing the erratic fuel pressure. Also changed the purge valve just for good measure. Drove a couple hours and everthing seems fine for now. If anything changes I'll post an update.
Here is a datalog of what the fuel pressue was doing.
datazap.me | tscclayton
datazap.me
The fuel rail pressure sensor, and/or possibly the wiring harness.
Nah spark plugs wouldn’t cause a high rail pressure code. It’s is most likely the sensor or the harness
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