C5 Pump?

wigelywoo · Post by **wigelywoo** » 18 Aug 2007, 09:51

I have 2.2 Hdi C5 and sometimes when I stop the car and switch off I can hear what sounds like a pump running in the back of the car.
Any ideas what it might be?
Thanks in advance.

JohnD · Post by **JohnD** » 18 Aug 2007, 10:21

Maybe the lift pump in the fuel tank

reblack68 · Post by **reblack68** » 18 Aug 2007, 13:36

I think it alters the ride height when you switch the engine off, could it be that?

wheeler · Post by **wheeler** » 18 Aug 2007, 20:47

reblack68 wrote:I think it alters the ride height when you switch the engine off, could it be that?

the suspension pump is under the bonnet behind the o/s headlamp.
At the rear of the car it can only really be the low pressure fuel pump or (being a 2.2) the fuel additive injector pump.