1.9 PD 130 AWX engine cutting out solved

[motchy87]

Share some recent experience -

Engine started cutting out randomly - Number of potential culprits as already described in previous threads - lift pump, crank speed sensor, relays etc.

Eventually found the problem. Lift pump (in the tank) was gradually failing. Swarf was found in the tank (slowly munching itself to pieces?). Problem persisted even with new lift pump. Logical thinking led my mechanic to believe the original pump put enough strain on the electrical wire (live feed) from the ECU to the pump to cause it to eventually burn out.

New wiring from the ECU to the pump solved the problem.

[Peter D]

"Swarf was found in the tank" Is rather disconcerting. It tends to indicate the tandem pump is the cause of the swarf. Regards Peter

[motchy87]

Peter,

Good point. The tandem pump (high pressure) was the original diagnosis and replaced first, along with a cleaned out fuel tank.

Logic would think: Tandem pump gradual failure, swarf sent back into the tank via fuel return line, putting increased strain on lift pump and associated live feed from the ECU, resulting in eventual burn out.