Simon.Rogers Posted August 25, 2015 Share Posted August 25, 2015 Just been round with David Nelson who's car was running earlier today. Now its not!1.8 K on MEMS. EU2He was driving home from MOT and it simply stopped. I was away with Penske so no help but tonight made a little progress.Initially no power to ECU. A couple of swaps between MFRU's and it suddenly began to power up. Now working on both? No 12v comming out from the MFRU's in the first place. Imobiliser seems to be turning on and off (although I don't trust any imobiliser).Zero spark on the plugs. David has already changed the Crank sensor.I think there are multiple issues - which just confuse when tracing. My guess is that given this engine has stood unused along with loom and ECU etc for a few years damp/corrosion could be the issue?However I would go for it not starting in the first place but why just stop? Plenty of fuel. Its lack of spark that is the issue.At least now the IVAC initiates.Any ideas?What does the Imobiliser talk to? Presume its the ECU not the MFRU? Link to comment Share on other sites More sharing options...
Mark Durrant Posted August 26, 2015 Share Posted August 26, 2015 SimonNow you have power to the ECU I would check for a spark from the coil lead to earth as the dizzy cap and rotor arms are known weak points. If no spark the coil is the likely point of failure hence my request for the spares box to be at Curbs. I suggest David still comes to Curbs and I am confident we will find the fault. I doubt it is the immobiliser as even when 'armed' the engine will initially run for a few seconds before stopping. I assume it still has the original Rover immobiliser fitted. Link to comment Share on other sites More sharing options...
Support Team Shaun_E Posted August 26, 2015 Support Team Share Posted August 26, 2015 I think I might have a spare (unused) dizzy cap and rotor arm if I haven't already donated them to the spares box. Will check tonight. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted August 26, 2015 Member Share Posted August 26, 2015 My guess is that given this engine has stood unused along with loom and ECU etc for a few years damp/corrosion could be the issue?However I would go for it not starting in the first place but why just stop? Plenty of fuel. Its lack of spark that is the issue. Battery voltage at rest and while cranking? Inspect and clean all relevant feeds and earths including ECU earth. How do you know the ECU is now getting enough volts?Jonathan Link to comment Share on other sites More sharing options...
Redline Posted August 26, 2015 Share Posted August 26, 2015 Have you checked ignition side of battery master switch? Link to comment Share on other sites More sharing options...
Mark Durrant Posted August 26, 2015 Share Posted August 26, 2015 No battery master switch is fitted to this car. Link to comment Share on other sites More sharing options...
John Vine Posted August 26, 2015 Share Posted August 26, 2015 Worth a quick check of the wiring at the back of the ignition switch to ensure that all the connectors are firmly attached.JV Link to comment Share on other sites More sharing options...
Simon.Rogers Posted August 26, 2015 Author Share Posted August 26, 2015 Thanks AllIt turns over with no problem.David is away for a couple of days. Friday we will get a loan of an ECU which has imobiliser bypassed.David has ordered coil and dizzy. Link to comment Share on other sites More sharing options...
david nelson Posted August 27, 2015 Share Posted August 27, 2015 It just stopped. Did 3 miles to the mot passed and then drove a short distance and lost power at 5000rpm so hit the kill switch. Has not started since but turns over. No spark spark plug or ht lead. Redline dispatch new coil, dizzy cap and ht lead. Already changed rotor arm and crank senser. Now on train back home hope to get it sorted tomorrow Thanks to all who are helping David Link to comment Share on other sites More sharing options...
7 wonders of the world Posted August 27, 2015 Share Posted August 27, 2015 Hi Simon,I had a similar instant on the rollers at Emerald when my Emerald lost it's power feed.I had already removed the MFRU, large grey plug and several other poor items from the loom, we unwrapped the loom and got wiggling and found yet another dry joint in there............ The stock loom really is a crock of sh1te Link to comment Share on other sites More sharing options...
Simon.Rogers Posted August 28, 2015 Author Share Posted August 28, 2015 Just the coil to change in a mo when it arrives.Power going to coil.If its not the coil its going to be loom or ECU! Link to comment Share on other sites More sharing options...
revilla Posted August 28, 2015 Share Posted August 28, 2015 When you say you "hit the kill switch" ... what kill switch are you referring to? Link to comment Share on other sites More sharing options...
Simon.Rogers Posted August 28, 2015 Author Share Posted August 28, 2015 Davids car is not set up as standard.It has key for power up but also a toggle switch to further arm things.The car turns over as normal - all we ar missing is spark! Link to comment Share on other sites More sharing options...
revilla Posted August 28, 2015 Share Posted August 28, 2015 Just wondering what it cuts off ... I know that cutting a traditional master switch while it's running can lead to large voltage spikes from the alternator when the battery load is removed (which should be dumped through a resistor). Just wondering if the "kill switch" could possibly have lead to a voltage spike which could have damaged the ECU? Not sure how it is wired so may be of no relevance. Link to comment Share on other sites More sharing options...
Simon.Rogers Posted August 28, 2015 Author Share Posted August 28, 2015 Coil ! Total failure!New coil started first time. Not seen a complete stop before only slow breakdown. David has just changed it and it started first time. Link to comment Share on other sites More sharing options...
SM25T Posted August 28, 2015 Share Posted August 28, 2015 Hurrah. Good news. Link to comment Share on other sites More sharing options...
revilla Posted August 28, 2015 Share Posted August 28, 2015 Unusual ... but glad it's sorted! Link to comment Share on other sites More sharing options...
Area Representative Paul Richards Posted August 28, 2015 Area Representative Share Posted August 28, 2015 Excellent. Glad it's sorted. Link to comment Share on other sites More sharing options...
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