Unfortunately the type number would be outside it burred under potting compound. Any high power transistor would work as long as it's the right type, (NPN or PNP), like ones from a high power audio amplifier. I've got a box full of them, but I really don't want to dig into it blindly. Image Unavailable, Please Login But I'm getting ahead of myself. I still need to verify that it's the problem. Could be a bad solder joint, ..... But making headway. At least I'm confident I can isolate the problem now. Just ticks me off. The last few years I've been driving the 355 mostly and this year I wanted to get more seat time in the 308. Bottom line, money will fix it once I know what to fix.
Clearly you have the skill: I do not. Finding people this side of the pond to rebuild mid80s electronics is proving increasingly difficult hence the question.
As the song says, "Isn't that the way they say it goes?" So I went out for a ride with my hand held scope attached to try and determine if the problem was in one of the digiplexes or with a coil. Nothing! Not a single blip. Can ran perfectly the entire time.
I've put about 300 miles on the car and it runs perfectly. At this point I have to assume it was a bad connection. I had unplugged the connectors from the digiplex unit to check which bank was connected to which digi and after reconnecting them all is good. End of story.
Very frustrating. You cannot troubleshoot or fix an intermittent problem when it is not present other than just guess or shotgun it. I Had an issue with my Alfa 164, I came out of the store and it wouldn't start, ended up having it towed home for the first time ever and once there it started and ran fine. So it sat parked in the driveway for months, I would periodically start it up and idle it but didn't feel like taking a chance on getting stranded again then one day it was idling and started to sputter. I started fiddling around and found I could get a reaction when I moved the crank sensor cable. So you've probably already tried it but maybe just start jiggling wire harnesses while it's idling and see if you can get some results. Eventually you'll find the culprit.
Check the multi-pin connectors behind the coils. This can be a source of intermittant and/or total power loss .
If you mean the ones by the oil cooler, done. Every , connection in the ignition path has been checked and cleaned. The problem was definitely a momentary failure of the grounding of one of the coils. I was able to capture that on my scope. But after determining which bank was connected to which digiplex the problem has not reappeared. Apparently messing with the plugs to the digiplex units has corrected the situation. What ever the cause, it's no long a problem unless it reappears. I simply can't fix what isn't broken. Like I said, the book is closed on this one unless it reappears. If it does, I know what to look for.
