dwi Posted December 18, 2008 Author Share Posted December 18, 2008 Too many 'Dave's' here. Gets confusing. One of the things that threw me (I restore old trucks and jeeps but never touch the disco) was that when it had been in the L/R garage while they tried to sort out the ABS; was that they refered to it as a 'Fly by wire' which made me think for ages that it would be an electronic link between the peddel and the pump. Also the Haines manual refers to the wires and cables that attach and need disconecting when removing the ZF box. One this model it's my understanding that no matter how far you put your foot down on the peddle it can't inject any more fuel than it can actually burn. Hence I assumed the whole thing was far more complex than it was. In fact this is just old 50s engineering and no different to American stuff. I really should look under that bonnet more and take an interest! Dave. Quote Link to comment Share on other sites More sharing options...
Pete Attryde Posted December 18, 2008 Share Posted December 18, 2008 too many 'Dave's' here. Gets confusing.One of the things that threw me (I restore old trucks and jeeps but never touch the disco) was that when it had been in the L/R garage while they tried to sort out the ABS; was that they refered to it as a 'Fly by wire' which made me think for ages that it would be an electronic link between the peddel and the pump. Also the Haines manual refers to the wires and cables that attach and need disconecting when removing the ZF box. One this model it's my understanding that no matter how far you put your foot down on the peddle it can't inject any more fuel than it can actually burn. Hence I assumed the whole thing was far more complex than it was. In fact this is just old 50s engineering and no different to American stuff. I really should look under that bonnet more and take an interest! Dave. As yours is a 1996 Auto it almost certainly is an EDC (Electronic Diesel Control) engine which is fly by wire. There most likely is an airflow meter in the inlet pipe work. This will have a throttle potentiometer on the pedal and an ECU behind the drivers side Kickpanel. However, the kickdown is operated with a cable that runs from the throttle pedal to the linkage at the injection pump and then from the linkage to the auto box. Pete. Quote Link to comment Share on other sites More sharing options...
Guest DiscoTD4 Posted December 18, 2008 Share Posted December 18, 2008 Too many 'Dave's' here. Gets confusing.One of the things that threw me (I restore old trucks and jeeps but never touch the disco) was that when it had been in the L/R garage while they tried to sort out the ABS; was that they refered to it as a 'Fly by wire' which made me think for ages that it would be an electronic link between the peddel and the pump. Also the Haines manual refers to the wires and cables that attach and need disconecting when removing the ZF box. One this model it's my understanding that no matter how far you put your foot down on the peddle it can't inject any more fuel than it can actually burn. Hence I assumed the whole thing was far more complex than it was. In fact this is just old 50s engineering and no different to American stuff. I really should look under that bonnet more and take an interest! Dave. Hi Dave (dwi) as Pete says more than likely you have the EDC (electronic diesel control) model and so the accelerator pedal acts on the potentiometer and your orginal understanding is correct - the pump is controlled electronicaly. The fuel pump timing and injection quantity are totaly controlled electronically by solenoids, which in turn are controlled by the ECU, which in turn takes lots of information from various sensors around the engine. It looks like the cables operate the pump because of their proximity to it, but there are just a decoy to fool us The cable is purely used to operate the kick down cable, nothing else. Also if yours has a cruise control you will see another cable from the CC servo going back into the bulk head, this is used to mechanicaly move the acelerator pedal. So as you can see it's a bit of a mix N' match of new / old technology. The wires connecting to the gearbox are speed sensor (elctronic speedo feed), reverse light switches etc, the gearbox is purely mechanical. Hope this all makes sense, all the best. Cheers Quote Link to comment Share on other sites More sharing options...
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