Failed cam syncronizer. Was there a squeaking? I'm almost positive that is the cause. if the fails it stops the oil pump from working and from there its failure. It can seize then unseize and make it seem like failure didn't occur. That's why I'm adamant about others changing their syncro when the first sign of trouble appears. When I pulled my syncro it would seize under certain conditions when I bench tested it.
-2007 Mazda Axela (3s sport) "Ai", 2.3L MZR DOHC I4, 5F31J T-ATX True Red
-SOLD-1999 Jeep TJ Wrangler, AMC 150 OHV I-4, Aisin-Warner AX-5 MTX Flame Red
-TOTALED-1996 Ford Taurus GL "Able", 3.0L OHV V6 Vulcan, AX4N ATX Toreador Red
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-2005 Ford Explorer Sport Trac XLT, 4.0L SOHC Cologne V6, 5R55E ATX Silver Birch Metallic
-2007 Nissan Quest 3.5SE, 3.5L VQ35DE DOHC V6, RE5F22A ATX Silver Mist Metallic
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