Ok I had an issue with the high pressure pump.
Replacement pump fitted but it had a blocked regulator.
Regulator replaced (secondhand but with new seals thanks to ddl)
Now getting in lexia P1138 That fluctuates between permanent / Temp fault. Fuel Pressure Regulator Stop requested But Regulator still Active.
Any Pointers please
I can post any additional info requested from lexia as required.
C5 2.2hdi Bosch system 2002 fuel pump issues
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C5 2.2hdi Bosch system 2002 fuel pump issues
C5 2.2hdi
Lexia and pp2000 clone available
Lexia and pp2000 clone available
If you follow the wiring down from the fuel rail pressure sensor to just near the sump there should be a yellow 3 pin connector, poor connections at this plug is the usual cause of this fault, cut the connector off & solder the wires direct. This fault is sometimes acompanied by the engine running on for a few seconds after switching the ignition off ?