Megasquirt ECU playing up

Discussions relating to Turbochargers, Superchargers, Induction, Engine Mods, Exhaust Mods, and other items specifically to make your MX5 or Roadster put out more power.

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eman8201
Hey. They are NOT Training wheels.
Hey.  They are NOT Training wheels.
Posts: 5
Joined: Sat Feb 22, 2014 7:48 pm
Location: Auckland

Megasquirt ECU playing up

Post by eman8201 » Sun Jun 29, 2014 11:57 am

I have recently finished a turbo conversion on my 1994 NA8. Last thing I had to do was wire in my megasquirt computer. I wired it to the factory ecu plug, plugged it in and it started first time. Even had it idling for a bit.

I then noticed the turbo was a bit stiff so turned it off, took of the oil feed and noticed the turbo wasn't getting oil. I cleared it up, got oil flow then went to start it again, and nothing....... no firing NOTHING. Just the starter turning over like it would with no computer in it at all.

Is there a chance my computer could have fried itself? Does anyone had a similar experience before? I have checked all the wiring and there is no obvious sign of a shortage or overheat....

Please help! :shock:

Thanks
1995 White Miata

SLYDIT
Keep calm, Forum Moderator here.
Keep calm, Forum Moderator here.
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Joined: Sun May 21, 2006 6:18 pm
Location: In the Garage.

Post by SLYDIT » Sun Jun 29, 2014 1:16 pm

what sort of megasquirt? what software?
RED '90 TURBO.
SCARING PRIUS DRIVERS SINCE 2002

Teamjelly
Need, more, 5-ing, time....
Need, more, 5-ing, time....
Posts: 109
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Location: McLaren Falls

Post by Teamjelly » Sun Jun 29, 2014 6:30 pm

Try new plugs first - it could just be flooded,
It's unlikely the ECU is damaged - they are very robust
Next:
Get Tunerstudio running
Make sure you are getting an RPM signal when cranking
If so, pull out the CAS, spin it by hand and see if you are getting injector pulse and spark.
If you can hear the injectors clicking , and it's sparking
Then check the timing is correct
If so, check the fuel supply - Make sure you haven't run out of gas. - Sounds silly - But happens all the time.
Still no luck - Put it on a trailer - Bring it down and I guarantee I'll get it up and running and give it a good tune at the same time :)
Sticking feathers up your butt does not make you a chicken

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