mikeyb13 Posted July 26, 2015 Share Posted July 26, 2015 I have just aquired a 90 td and I was wanting to put the v8 out of my old discovery into it. I have all of the wiring from under the bonnet through to the ecu but I scrapped the discovery and I'm now wondering if I have all the required loom to get it running. It was a 1995 serp engine, there are 2 plugs near the ecu plug which I think 1 is for ignition but not sure on other. Anybody have any idea on what parts of loom I may be missing? Quote Link to comment Share on other sites More sharing options...
tacr2man Posted July 26, 2015 Share Posted July 26, 2015 It sounds like you have what you need , probably easiest way to sort is sit down with a discovery wiring diagram and see what wires go thru the plugs (colour coded) and work out what you nee to run the engine IIRC you will need about 6 wires to the harness from the 90 harness, eg ign , start , temp ,oil , etc. HTSH ps you will also need a speed signal pulse so the engine knows when its moving and not just at idle . Quote Link to comment Share on other sites More sharing options...
mikeyb13 Posted July 26, 2015 Author Share Posted July 26, 2015 Thanks. Where would I get that signal from as the disco was non abs and the 90 is f reg. Just thought that will come from gearbox as spotted some wiring coming from box into loom when I was there earlier Quote Link to comment Share on other sites More sharing options...
daslandroverman Posted August 2, 2015 Share Posted August 2, 2015 They will run without a vehicle speed sensor (I had 2 without) but it was usually a little box in the middle of the speedo cable or a transducer in the speedo drive on the box, which being a Serp engine disco it likely was as the speedo would have been electronic. Quote Link to comment Share on other sites More sharing options...
tacr2man Posted August 2, 2015 Share Posted August 2, 2015 I have used the little box type pulse generator from RRC in two piece speedo cable in the past . I think you could use the transducer from a TD5 defender or lecky speedo disco , as all it needs is a pulse signal dont think its critical as to rate (one type is twice rate of other) they use the signal for fuel regulation to idle or on overun so will affect economy . HTSH Quote Link to comment Share on other sites More sharing options...
mikeyb13 Posted August 2, 2015 Author Share Posted August 2, 2015 I have the engine, gear and transfer box from the discovery with all the wiring still on it. Will shoehorn it in and see what happens ☺ Quote Link to comment Share on other sites More sharing options...
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