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| * sounds like high voltage (probably spark) related damage |
| All the coils where changed and checked before the new unit went in. Still the new unit stopt working after just absout 20 min?! |
| All the coils where changed and checked before the new unit went in. Still the new unit stopt working after just about 20 min?! |
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* I can think of only ignition spark going to the wrong place (or lightning) that could do such thing...
* The other inputs and outputs should not normally suffer such shock beyond their normal protection * We've heard of a similar case (few years ago), when the coil secondary GND-return was not connected ( the ECU is involved in the spark path that way, which most likely causes damage in short time ) |
| With Twinshield harness, high Z, and OEM BMW M50 coils. |
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With Twinshield harness, high Z, and OEM BMW M50 passive coils.
* can you detail the connection of the passive igncoils ? * Maybe the coils have ground return on the secondary, some of which (or all) were not grounded ? ** Dave : that could very well be it, in stock loom they are grounded on the head (near the spark plugs) ** yes the coils have secondary gnd return that needs to be connected (1993 BMW 318i - 318is - 325i - 325is Electrical Troubleshooting Manual.pdf page #97, even more clear on page #104 ) |