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Crank no spark

Posted: Fri May 15, 2026 9:24 pm
by Rycooda
Hi all,

Getting a bit frustrated with my car now, I have a 1997 Mazda mx-6 (V6 4-speed Auto) one day last year it began to struggle starting, but once it warmed up it wouldn't misfire, until one day it stopped turning on completely. it still cranks when the battery is charged but doesn't seem to spark.

This is everything I have checked/had fixed:
- CPS replaced
- I have two working dizzies that have had benchmark checks from ignition car parts
- ECU reconditioned
- relays working to my best knowledge
- OBD 1 just flashes in a standard rhythm which seems to mean no code
- Battery changed

One time a mechanic friend came over and wriggled some sensors, and the car worked for a day, and subsequently stopped again a day later, does anyone know which sensors can be liable for stopping spark/turning on?

If anyone has any wiring diagrams I would be grateful to see them, no diagrams I have found so far seem to match the colours of my wires.

Cheers!

Re: Crank no spark

Posted: Fri May 15, 2026 11:52 pm
by Incognito
If anyone can help Ryan please put suggestions through. This is the MX6 I owned.

Re: Crank no spark

Posted: Sat May 16, 2026 7:37 am
by Kit
You said you changed the ECU :?:
Do you have the TEMIC system on the car :?:
If so, is the replacement ECU match to it :?:

Kit

Re: Crank no spark

Posted: Sat May 16, 2026 8:11 am
by Micron
Incognito wrote:
Fri May 15, 2026 11:52 pm
If anyone can help Ryan please put suggestions through. This is the MX6 I owned.
I never realised it was the one I owned

Re: Crank no spark

Posted: Sat May 16, 2026 10:52 am
by Rycooda
Kit wrote:
Sat May 16, 2026 7:37 am
You said you changed the ECU :?:
Do you have the TEMIC system on the car :?:
If so, is the replacement ECU match to it :?:

Kit
No sorry I didn’t replace it, I got it reconditioned at a place called actronics (they found a burnt out track and managed to repair it)

But I have no idea if this one has a Temic system… I’ll do some reading….

Re: Crank no spark

Posted: Sat May 16, 2026 12:10 pm
by Kit
Have you a chipped Key :?:
If so , it's likely the TEMIC security system we have on the Late Probe's ( post 1996).
These are 'matched to the ECU', so you can't just swap over the ECU's on Late cars.

That might be your problem.

Kit

Re: Crank no spark

Posted: Sat May 16, 2026 12:48 pm
by Incognito
It is temic yes, chip in key.

Re: Crank no spark

Posted: Sat May 16, 2026 12:55 pm
by Micron
Has it only stopped working since you had the ECU repaired?

Re: Crank no spark

Posted: Sat May 16, 2026 1:11 pm
by Rycooda
Micron wrote:
Sat May 16, 2026 12:55 pm
Has it only stopped working since you had the ECU repaired?
No it wasn’t working prior to this either, it was repaired in an attempt to get the car running

Just to clarify for people, the ecu/pcm wasn’t replaced it was just fixed