Does Coil have a ballast resistor?
Discussion
I'm no expert, but....it sounds like your on the expensive slippery slope of replacing your engine bit by bit until you come across the problem part. I had an ignition coil problem on mine, but this would only start playing up when it got hot i.e. it was fine with a cold engine. If yours is happening with a cold engine, I would suspect something else e.g. the temperature sensor perhaps? It may help to describe what the "niggles" are exactly (maybe you've done this in an earlier thread?).
One extremely important thing I learned when I had my ignition problem is that the symptoms (eg misfiring) don't necessarily go away when you replace the faulty part - the reason for this apparently bizarre behaviour is that the ECU gradually adjust it's fuelling parameters depending on the information it receives from sensors, ignition etc. So when a fault occurs, it adjusts to take account of the new conditions and it can get to a state where it is screwed up and cannot recover (this happened to mine). The solution is very simple - reset the ECU by disconnecting it, leave for 10 seconds and re-connect. You may find that the problem was with the leads or plugs and that resetting the ECU gets it back on track.
You will lose any Fault Codes stored in the ECU, but assuming the main dealer you spoke of has already looked at these, then they would have been deleted anyway.
Hope this helps.
One extremely important thing I learned when I had my ignition problem is that the symptoms (eg misfiring) don't necessarily go away when you replace the faulty part - the reason for this apparently bizarre behaviour is that the ECU gradually adjust it's fuelling parameters depending on the information it receives from sensors, ignition etc. So when a fault occurs, it adjusts to take account of the new conditions and it can get to a state where it is screwed up and cannot recover (this happened to mine). The solution is very simple - reset the ECU by disconnecting it, leave for 10 seconds and re-connect. You may find that the problem was with the leads or plugs and that resetting the ECU gets it back on track.
You will lose any Fault Codes stored in the ECU, but assuming the main dealer you spoke of has already looked at these, then they would have been deleted anyway.
Hope this helps.
Quite long this, so please be patient
This goes back to October, due to bad weather (where we live if it rains you don't take the car out, too much farm residue on the roads, especially at this time of year, plus it's down hill the majority of the way to the main road, Tiv horses and wet slimy road surfaces don't mix well) hadn't taken the car out but left it on the trickle charge to keep battery topped up. Break came in the weather, roads dried enough so decided to take the car for a run. Wouldn't start, fuel pump priming, engine turning over but wouldn't fire. Had RAC out following day, took 2 hours to even get the car to start, phoned the dealer, and in all fairness to them they arranged to have the car in the following day. Chris took it up to them (badly running car and motorway
) attached car to the relevent machinery, and diagnosed faulty plugs and leads. Had these replaced and everything looked rosy again.
Have used car only a couple of times again since, see above over weather, no problems, started at first turn of the key, came to take it out again the other week, similar symptoms but this time it did eventually start. When we know it's not likely we are able to take the car out for more than a minimum of 7 days we attach the trickle charger.
This is why we wondered if changing the coil would help to someway remedy the starting problems, as all the paperwork we have doesn't mention the last time the coil was changed.
This goes back to October, due to bad weather (where we live if it rains you don't take the car out, too much farm residue on the roads, especially at this time of year, plus it's down hill the majority of the way to the main road, Tiv horses and wet slimy road surfaces don't mix well) hadn't taken the car out but left it on the trickle charge to keep battery topped up. Break came in the weather, roads dried enough so decided to take the car for a run. Wouldn't start, fuel pump priming, engine turning over but wouldn't fire. Had RAC out following day, took 2 hours to even get the car to start, phoned the dealer, and in all fairness to them they arranged to have the car in the following day. Chris took it up to them (badly running car and motorway
) attached car to the relevent machinery, and diagnosed faulty plugs and leads. Had these replaced and everything looked rosy again. Have used car only a couple of times again since, see above over weather, no problems, started at first turn of the key, came to take it out again the other week, similar symptoms but this time it did eventually start. When we know it's not likely we are able to take the car out for more than a minimum of 7 days we attach the trickle charger.
This is why we wondered if changing the coil would help to someway remedy the starting problems, as all the paperwork we have doesn't mention the last time the coil was changed.
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