1996 E36 325tds - revs on its own!! - Page 2

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    #12
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    ok some good news, i spoke to a bloke at my local bmw garage today and he said the e36 pump isnt coded his words were `wack it on and go and play!` so with those words still ringing in my ear i will do so! thanks for all your help peeps!!
     
     

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    Quote Originally Posted by jimm love View Post
    ok some good news, i spoke to a bloke at my local bmw garage today and he said the e36 pump isnt coded his words were `wack it on and go and play!` so with those words still ringing in my ear i will do so! thanks for all your help peeps!!
    I was informed they were

    He was referring to the one bolted to the engine right?

    There is also a fuel pump inside the petrol tank under the rear bench seat on the drivers side

    I've stripped down my old tds engine and it doesn't look like just a case of "Whack it on" Looks like a right mare of a job

    Please keep us posted
     
     

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    thanks dude, il keep you posted fella!!!
     
     

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    --------------------------------------------------------------------------------

    after having my fuel pump replaced due to a reving its tits off on its own, i was more than a little dissapointed to hear from the garage today and find out the problem still remains! the diagnoetic says that there is a fault with the cruise controll sollenoid, just one problem, it aint got friggin cruise controll!!!! any ideas gang??? iv spent 500 quid to find out nob all and im not happy!! the throttle potentiometer has been replaced also!
     
     

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    Which pump has been changed ? the lift pump in tank or the injector pump bolted on the engine ?,now in my experience the lift pump in tank cannot cause the high revs as when it fails or gets to just running slow, the injector pump will try to draw fuel itself and will draw air in from wherever it can and this results in rough tickover and jerky throttle response with periods of normal driving but lack of power quite often.My new lift pump failed thursday night (lasted 40k),symptoms of fuel starvation so a new fuel filter fitted with no joy and now lift pump is main culprit,these pumps only put out around 6psi but the inj pump needs the fuel to cool and lubricate it and I believe it needs that low pressure to be able to actually function properly.I have had enough of the lift pumps on these and am going to fit a facet solid state fast road pump,found about fitting one to a tds on vegetable oil diesel .co.uk (google replacing lift pump with facet).One symptom of the lift pump going home is often the car feels underpowered every so often,this is caused by the ecu switching the pump off and on on a warm engine dictated to the ecu by a fuel pressure switch in the filter head,because the pump is getting tired the fuel does not get up front quick enough and a small drop in power can be noticed until it eventually gives up and then the inj pump try's to draw it own fuel using vacuum and then draws air in,lots of air can be seen flooding through the clear pipe to inj pump on mine at the moment.So lift pump symptoms are odd lack of power at times leading to rough jerky running and tickover can be raised to a rough 11/1200 interspersed with normal tickover or running depending how much fuel the inj pump has at the time,I could go out and start mine now and it will sit and purr,even until its warm,but if I give it a rev at any time then it draws the air in and starts to shake.I will do another post in a few minutes concerning inj pump.
     
     

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    sorry, having probs posting! thanks doug1234, my prob is that it ticks over lovely and smooth, when the throttle is pressed it goes mental! revs to the balls! the mechanical side of things is pretty much ruled out now, just all the bloody wires to check ect!
     
     

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    Out of interest have you checked to ensure that no water has got inside of the ECU compartment. It's worth checking as the E36 is becoming prone to waterlogging issues. Just thinking it's worth checking as it sounds as though nearly everything else has been inspected
     
     

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    Waterlogged ecu can cause these symptoms but more often than not its the potentiometer in the injection pump itself.
     
     

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    well i think its worth a check, thinking back i did give it a good clean not so long back, i do try to be a bit carefull with the old jet wash tho! im just at the point where i dont know whether its time to strip the bugger out and weld the diff up and have it as a toy! i just love it as it is tho, such a nice car to live with!!!
     
     

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