Quote:
Originally Posted by Ohio Enthusiast
Check the battery connections (and the master fuses there) and after that, chassis ground points.
I had kinda similar symptoms after a body shop snapped the negative terminal connection bolt and didn't bother to replace it nor tell me about it.
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Thanks for the tips! Figured out what it was. Weirdest thing, bad cell in the battery causing an internal short or some other malfunction that the car electronics were sensitive to. When running, it was showing 14v to the battery so alternator was running great. When running jumped off the other FR-s battery in parallel +/+ -/- (not +/battery -/chassis ground), it ran for 5 minutes with no issue, then another 7 with the jumpers removed, then went back to cutting out. When it would cut, voltage across terminals would go immediately from 14 to 0, then a inside a minute would jump immediately to 11v then slowly climb to 12.8v over about 30 seconds. I swapped the battery from the other car, and it fired right up and made the 20 mile stop and go drive home without a single hiccup.
Battery was disconnected before work started and reconnected after all work was complete. Weird coincidental defect failure I guess.
