Xantia HDI engine cut out

howiedean · Post by **howiedean** » 21 May 2009, 22:33

Hi,
I've recently changed the low pressure pump on my Xantia HDI after experiencing engine cut outs. I suspected the low pressure pump as it seemed to be intermittently failing. The Engine Management light would illuminate after a cut out and the pump sounded noisy when it was running.

A couple of hundred miles after the tank replacement the engine suddenly cut out again. This happened a few times and I managed to catch one of the symptoms, that is when the engine cut out I removed one of the fuel filter pipes and switched on the ignition. No fuel came out of the pipe until a few applications of the ignition switch. Also whilst these symptoms were experienced the fuel light had recently come on.

I managed to get the car to a petrol station as it was cutting out fairly quickly after each failure and it has not failed since putting £30 of diesel in the car.

The Engine Management light illuminates for a few miles only then it goes out. I'm not ruling out the fact that the original pump was knackered and that I have replace it with a dodgy one.

Q1. What controls the low pressure pump. Does the pressure sensor have any impact on the low pressure pump operation?

Q2. I have read that the pump can get hot with low fuel levels, could it be that the new pump (GSF pump and sensor replacement) is suffering from this issue and therefore failing at high temperatures?

Q3. Any other advice regarding this failure.

Many thanks in advance,

Howie

wheeler · Post by **wheeler** » 22 May 2009, 15:33

howiedean wrote:Q1. What controls the low pressure pump. Does the pressure sensor have any impact on the low pressure pump operation?

The low pressure pump is controled by the injection ECU via the double relay. The fuel rail pressure sensor has no effect on the operation of the LP pump.

dnsey · Post by **dnsey** » 22 May 2009, 16:11

Sorry to state the obvious, but is the gauge / warning light accurate? Perhaps you're just running out of fuel.

howiedean · Post by **howiedean** » 27 May 2009, 21:34

dnsey wrote:Sorry to state the obvious, but is the gauge / warning light accurate? Perhaps you're just running out of fuel.

I think so. Will let you know as I've not had any issues since putting some more fuel in. I think that the pump was getting hot with the low fuel level.

Many thanks

Howie

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Xantia HDI engine cut out

Xantia HDI engine cut out

Re: Xantia HDI engine cut out