It sounds like your truck have a few systems that use PWM. PWM system is controlled by a processor which modulate the electrical system by turning the electrical source on and off rapidly (more for higher, less frequent for less). Things like AC, variable lighting that uses LED would use PWM. Each system eg AC would have their own processor, the problem arises is those processors are really sensitive to surges. They might check out okay, but they might loose their ability to swich on and off well.
Is your truck leased? it might be a good idea to just trade it in when the new model comes and let someone else figure it out.
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Originally Posted by tacoDinner
Tons of mods, but none that would interfere with the starting process. None of my electrical stuff is hooked up at the moment (while dealing with this problem).
Picked the truck up this morning (was starting fine), drove it 30 minutes to Burnaby, and it wouldn't start again. Tech suggested trying to start it in neutral, and lo-and-behold, it fired right up. Immediately after it started in park, too. Tech thinks it may be the neutral safety switch at fault here.
Being able to start from neutral is a huge relief (provided that continues to be the case), as I can't express how tired I am of getting stranded/stuck with a non-cranking truck. Will continue to use the truck and see how things go - if this scenario reproduces consistently a few more times, it should be easy enough (although not cheap) to replace the neutral safety switch.
And yes, I've seen the morimoto-problem thread. One strange thing I had encountered with this Truck's electrical (early this year) was when I was hardwiring my radar detector and dash camera, I was looking for a switched 12V. Found one, tapped it, and then boom, it would only show 5V instead of 12V when the truck was running. Then it would randomly show 12V again, then back to 5V. Turns out the new Tacoma does this kind of "pulsing" across many different circuits - first you get one voltage, then another at a different time. This was a head scratcher. But anyways, that's not related to the starting problem.
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