GBrown Posted August 14, 2007 Share Posted August 14, 2007 Hi When I turn on the ignition on my TD5 DII, the fuel pump starts and keeps running. Is this normal. I'm sure it used to come on and then stop after it had primed the fuel system. Ciould this be a sign of the pump failing. The car drives OK but sometimes it feel's smoother with more power than other times!!. Graeme Quote Link to comment Share on other sites More sharing options...
BogMonster Posted August 14, 2007 Share Posted August 14, 2007 It should go off after about 30 sec if the engine is not running, though I think some of the later ones might be longer maybe 5 min? have you had the engine ECU replaced lately? It should run all the time once the engine is started though. Quote Link to comment Share on other sites More sharing options...
GBrown Posted August 14, 2007 Author Share Posted August 14, 2007 No , have had the head gasket done and am running a Dastek powerplug. The pump issue started before i'd done this. I'll try and leave it for longer to see if it will stop!! Thanks BogMonster Quote Link to comment Share on other sites More sharing options...
JimAttrill Posted August 15, 2007 Share Posted August 15, 2007 Could be your fuel pump giving insufficient pressure. BUT before you change it get your fuel pump pressure checked. It should be 4 bar / 60 psi at the engine. If it is incorrect it could be the pressure relief valve on the side of the engine that is stuffed. These are much cheaper than a new pump. If you have air in the system, it could be injector washers or o-rings. This again is cheaper than a new pump. Air in the system will cause your pump to keep going rather than switching off, though they all switch off eventually. Quote Link to comment Share on other sites More sharing options...
GBrown Posted August 17, 2007 Author Share Posted August 17, 2007 Thanks Jim. I'll get my fuel pressure checked and let you know how I get on. Cheers Graeme. Quote Link to comment Share on other sites More sharing options...
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