MS1 spark is gone ???
#1
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
listers,
After building my own MS1 with LC-1 and AFM delete in preperation of a turbo the car ran fine, i just started to do some small logs and wanted to do some more extensive logging.
I then read the improved spark output driver circuit update by joe, well this was a great update and i bought the necesary products. Started soldering and had everything the way it should be.
Car started right up without the nasty burble but after running 2 / 3 minutes it just died........ started it and ran fine............ for 2 / 3 minutes (spark inverted to yes).
So today i soldered the original wiring in again, started the car and now it doesn't want to start at all.
I traced it back to the spark output (sparkplug to ground no spark, pnp spark yes), switched it for a local PNP and that fired right up.
Do any of you know what to do ?? what should be checked? what should i do?
Thanks in advance!
tony
After building my own MS1 with LC-1 and AFM delete in preperation of a turbo the car ran fine, i just started to do some small logs and wanted to do some more extensive logging.
I then read the improved spark output driver circuit update by joe, well this was a great update and i bought the necesary products. Started soldering and had everything the way it should be.
Car started right up without the nasty burble but after running 2 / 3 minutes it just died........ started it and ran fine............ for 2 / 3 minutes (spark inverted to yes).
So today i soldered the original wiring in again, started the car and now it doesn't want to start at all.
I traced it back to the spark output (sparkplug to ground no spark, pnp spark yes), switched it for a local PNP and that fired right up.
Do any of you know what to do ?? what should be checked? what should i do?
Thanks in advance!
tony
#5
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
well that is just the problem the mod worked but it didn't, car started but died 2 minutes later this just repeats when you start the car again.
I bought new npn transistors wired it up a second time and then the car wouldn't start up anymore, i then wired it up for the situation before the mod but it won't start.
The only thing i can think of is that i desoldered something, so i got my multimeter and probed the wires and everything in the area i could have touched. But i cannot discover anything...
MS1 is back to normal so a picture wouldn't help would it ??
I bought new npn transistors wired it up a second time and then the car wouldn't start up anymore, i then wired it up for the situation before the mod but it won't start.
The only thing i can think of is that i desoldered something, so i got my multimeter and probed the wires and everything in the area i could have touched. But i cannot discover anything...
MS1 is back to normal so a picture wouldn't help would it ??
Thread
Thread Starter
Forum
Replies
Last Post