Hydra 2.17 randomly loses power- shuts car off - Page 4 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 02-03-2015, 04:36 PM   #61
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I've seen many cars, including one of my old ones, where main relays keep cooking. I figured out it's not really fixed until you also pull the fuse box up & find the most-likely burnt wires on the bottom side feeding the relay. Replacing the burnt ends plus a new main relay usually solves the problem.

1990-2002 cars use a traditional ignition-switch powered main relay setup. 2003-05 cars however use a different setup where the ignition switch controls the ECU which controls the main relay switching.

Mike, you should take advantage of the current 2.7 upgrade sale!
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Old 02-03-2015, 05:08 PM   #62
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Mspro bro!
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Old 02-04-2015, 05:17 PM   #63
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The 80a JE16 relay has been holding up so far. Did a nice tuning session today that was 3-4 times longer than it would previously take to kill the old relays.

I will report back if it fails, but so far it seems to have fixed the issue.
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Old 02-16-2015, 08:46 PM   #64
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JE16 relay failed today after a 3 hour drive. Need to start looking through the electrical system now. :sigh:
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Old 04-17-2015, 09:20 AM   #65
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Figure since I'm doing some searching and seeing this thread, I can update.

Car has had 2.7 for awhile and has not had the power-loss issue in quite sometime. Not terribly long ago, the damn main relay offed itself, but I know what to look for with that now. I still don't know what was causing the intermittent power cuts way back then. IIRC it did stop when I upgraded to 2.7
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