[Quantum Owners] Re: Ignition off, engine running - not over-run!
Thanks for the info Jim. Yes, I do have dim-dip and this is a place where ignition 12v and battery 12v come close. Somehow Ford managed to spread the system across a selection of relays, which makes working through it a bit difficult. As it's now Sunday afternoon, I've had time to work on the car and, after cleaning the main earth connections with no effect (always a good place to start when something weird is happening), I set about checking the fuse/relay box. The picture shows the dip beam relay, it's got a bit warm and so has the housing below it. I've also had occasional problems with the side light fuses 'getting a bit warm' over the years. The relay works perfectly but it looks like there has been an intermittent disconnect where it plugs in. As I'm not about to replace the fuse/relay box, there followed a bit of careful cleaning up of the connections and then I fitted a replacement relay culled from an XR2 that I used to sort out the wife's saloon a few years ago. This relay has a metal cover so it may be a bit more resilient. The blade contacts on the relay were adjusted slightly to ensure a better connection and after putting it back together and reconnecting the battery, everything was working normally again. How the power was getting to the ignition side I'm not sure, the earth side of the relay does use the same common earth point as the ignition switch but that doesn't mean much. Anyway, an acceptable result, and if your engine doesn't turn off when your headlights are on, look at the relays first. Dave English Q2-009 [image: CIMG5689.JPG] -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to quantumowners@googlegroups.com To unsubscribe from this group, send email to quantumowners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). --- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to quantumowners+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[Quantum Owners] Re: Ignition off, engine running - not over-run!
I suspected it wasn't injection but the cause can be completely different if it was. The ignition relay in the fusebox is only for switching the power to auxilary ignition powered circuits such as the wipers, heater etc. It's so that the high currents for those items doesn't have to be supplied by the ignition switch contact. But the actual ignition coil power (and the carb fuel cut off) is feed directly from the ignition switch. That's assuming it's all still standard wiring. Grounding the wire between the coil and the tacho (i assume as a anti theft switch) is a bit of a no no with electronic ignition, you can damage the amplifier. It's better to break the power feed to the coil and amplifier. Somehow you must have enough power leaking into the ignition coil circuit to keep the coil running. Is it just the lights that keep the engine running or does anything else ignition powered have the same effect ? Do you have dim dip ? Jim On Thursday, September 6, 2018 at 10:39:28 PM UTC+1, Dave English wrote: > > Hi Jim. > > Nope, no injection, it's an '86 XR2 under the bonnet so a twin choke Weber > and breakerless ignition do the job. > I've been looking at the book and I've just found that it has an ignition > relay, better check that out too. > Tomorrow I'll run it again in 'fault mode' and see if my ignition isolator > switch stops the engine (it grounds the line between the coil and the tacho) > Better check the fuel shut off valve (anti run-on valve) too, turning off > the ignition should shut of the idle fuel supply - in which case, where is > it getting the fuel from? > Don't you just love the way these little problems spread out! > -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to quantumowners@googlegroups.com To unsubscribe from this group, send email to quantumowners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). --- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to quantumowners+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[Quantum Owners] Re: Ignition off, engine running - not over-run!
Hi Jim. Nope, no injection, it's an '86 XR2 under the bonnet so a twin choke Weber and breakerless ignition do the job. I've been looking at the book and I've just found that it has an ignition relay, better check that out too. Tomorrow I'll run it again in 'fault mode' and see if my ignition isolator switch stops the engine (it grounds the line between the coil and the tacho) Better check the fuel shut off valve (anti run-on valve) too, turning off the ignition should shut of the idle fuel supply - in which case, where is it getting the fuel from? Don't you just love the way these little problems spread out! -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to quantumowners@googlegroups.com To unsubscribe from this group, send email to quantumowners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). --- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to quantumowners+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[Quantum Owners] Re: Ignition off, engine running - not over-run!
Has the car got an injection engine ? Jim On Thursday, September 6, 2018 at 8:56:51 PM UTC+1, Dave English wrote: > > Okay all, here's a good one to work out. > > Last night I went to my model aircraft club meeting. headlights were > needed on the way. When I parked, instead of shutting everything down then > turning off the engine, I turned the engine off first (I had forgotten > about the lights). I had removed the key and was about to get out before I > realised the engine was still running. > I turned the headlights off and the engine stopped. After making sure he > engine would start again I ignored it until I got home. > Back home I could reproduce the fault repeatedly. > With the engine running and the headlights on, turning off the ignition > did not stop the engine, it wasn't run-on, it was running properly. > Alternator and oil lights came on, but a bit on the dim side. When I turn > the headlights off, even to side lights, the engine stops normally. > Now you've all stopped laughing, (I had a bit of a giggle about it), I > know it's most probably an earth fault somewhere, I've yet to go through > the wiring diagrams, but if anyone's had anything similar, a starting point > would be appreciated. > At the moment I'll start with the main engine bonding lead and work out > from there. > > Regards > Dave English > Q2-009 > > > -- -- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To post to this group, send email to quantumowners@googlegroups.com To unsubscribe from this group, send email to quantumowners-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/quantumowners?hl=en IMPORTANT NOTE: All information presented herewith is provided on an "As Is" basis, without warranty or the implication thereof. Neither the Quantum Owners Club nor the individuals associated with the Quantum Owners Club or in the preparation of the above information shall have any liability to any person or entity with respect to liability, loss, or damage caused or alleged to be caused directly or indirectly by the instructions contained within this or related message(s). --- You received this message because you are subscribed to the Google Groups "Quantum Owners Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to quantumowners+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
