No spark, HELP!
 

Ok so here's the sequence of events:

1) Took car out for a drive, after about 2 miles of driving perfectly fine, car decided to shut off. Tried starting the car up again, no luck(engine rotates but wont fire up. Towed it home.

2) Decided to try a new coil pack, although the resitance indicated my current coil pack was fine.

3) Installed new coil pack, car started right up. Idled for about 15 mins., then hit the throttle, instantly the car shut off again! Wouldn't start up. Same thing as before, turns over but no spark.

4) Tried troubleshooting codes, however my check engine light doesn't want to light up, tried a different bulb, still no light.


Any suggestions as to what may be the problem? All suggestions are welcome!

P.S. I have done several spark tests and every so often we can get just one spark, on occasion, not enough to actually fire this thing up.

Why don't you list the mods you've done to your car so those knowledgeable can help?

Things like, are you running an MS?

More importantly, if you are running an MS did SCOTT build it?:eek3dance

nope! I only messed up one.....:x:

I'm running the greddy turbo kit with bipes, lot of other mods, but I don't think they'd affect spark or the ecu. Thanks in advance!

yeah, the bipes would never affect spark

A loose connection on the Bipes will give you this problem.

yeah id have to blame faulty wiring of something somewhere. never heard of anyone killing coilpacks on a stock ecu.

if the CAS wire on the bipes is broken then you'll never start the car again.

Tested the wiring harness leading to the coil pack, and it has power going to it, so it seems I'm frying the coil pack. Any ideas?

Are your plug wires staying seated on the coil pack?

If they come off, it will cause the coil pack to fry.

yes it will. i had that happen this summer

wow, someone with a variation of drift in their name seems to be intelligent and is getting help from scott, wow, im impressed lol

if your getting signal at the wiring harness and the coils were good it has to be up to your wires not connecting properly...are you not getting spark on every plug?
i assume you did inspect all the plug wires for damage, if they are in good condition and connected properly i cant think of anything else...

check over all of your grounds too

Have you tried removing the bipes from the system?

Did you mount the ACU in the engine compartment, or somewhere it might have gotten wet?

I've had fun experiences in the past with ECUs that got wet from unknown leaks in cars and made engine troubles REALLY hard to diagnose.

^^^You do realize that this thread is over a month old?
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I had identical symptoms two years ago. I replaced the CAS with a used one, problem solved.

Since we resurrected this.. please see this idiot asking the same question on CR.net and saying no one on mt.net helped him.

http://clubroadster.net/forum/viewto...69&no=1#195869

Yes, but the car is currently FS in the Classifieds, with this problem unresolved :)

then why did you post here?

If the car is still FS with the problem, it would be nice to know what sort of attempts to fix it he has undertaken. I figured a discussion among those who know more about a turbo'd miata than me might help me know what I am getting in to if I decide to buy the car.

I've spoken with the owner on the phone a few times... but bringing up this thread (since the question is still unresolved) seems acceptable to me.

I find it interesting that the person posting on CR sounds like a completely different individual compared to his posts here.