I have been having problems with my Volvo
D3-110 and hoping that someone here with Volvo
experience might have some ideas. I will explain below.
With the engine
, once reaching about 1400 to 1500RPM a "service fuel
is generated. Simultaneously the engine
automatically reduces and limits the RPM
to about 1250. Occasionally the engine will shut down immediately after the alarm
is sound. The engine has zero difficulty restarting every single
time. It's also worth nothing that I have not been able to trigger the alarm while in neutral and it will rev to 2500rpm no problem without any load.
We have already done the basic things of checking the primary and changing the secondary fuel filter
. All the filters appear clean. We have changed the fuel
pressure sensor and the fuel pressure limiting valve on the common rail. Most recently we changed the MPROP on the high pressure pump
. None of these have been able to correct the issue.
Recently we had the Volvo tech come out. The fault codes generated on VOIDA were MID128 PSID50, MID128 PSID71, and MID128 PSID71. This is pointing at the MPROP. The Volvo tech also noted that the engine was hunting rpm
a bit at idle suggesting the possibility of faulty injector(s)
The MPROP is new so it doesn't make sense that its generating fault codes but it is. Could this be a wiring
issue between the MPROP and the ECU? Perhaps a corroded connection is limiting current
flow to the MPROP and causing the pump
to send too much pressure to the rail?
Thanks in advance!