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MS3Pro Module PNP works one day, not the next. Stock ECU works.

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MS3Pro Module PNP works one day, not the next. Stock ECU works.

 
Old 03-27-2019, 10:42 PM
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Default MS3Pro Module PNP works one day, not the next. Stock ECU works.

In nutshell, I have one of Braineack's fully loaded MS3Pro Module PNP units. We plugged it in yesterday, and the car prettymuch fired right up on the first try.
We turned it off, parked the car overnight, and today it won't start. We can't even connect to the MS with a laptop.
We plugged the factory ECM in, car fired up. Then tried the Megasquirt again, no dice, fuel pump does not prime.

Is there something obvious that could be going on here?

Car is a 1990 with a Greddy turbo kit, aem wideband, ebc, and baro on the board. Help?!

Last edited by rustrocket; 03-27-2019 at 11:02 PM.
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Old 03-28-2019, 05:01 PM
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There's 2 fuses on the module you could check.
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Old 03-29-2019, 11:37 AM
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Originally Posted by WestfieldMX5 View Post
There's 2 fuses on the module you could check.
Will try that and report back, thanks.
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Old 03-29-2019, 01:37 PM
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In addition, if the battery voltage is too low I think the ms3 just shuts down and prevents a start. I know when my battery was dying it would behave that way.
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Old 04-12-2019, 06:40 PM
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Originally Posted by andym View Post
In addition, if the battery voltage is too low I think the ms3 just shuts down and prevents a start. I know when my battery was dying it would behave that way.
Nope, that wasn't it. Tried it yesterday with a freshly charged battery.
Still starts fine on the stock ecu.
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