Re: Cant get starter out
ItsMyTy said:
wires don't just magically partially fail. yea the purple insulation may be brown from the heat, but what's that gonna do to copper stranded wire?
Nothing 'magic' about it, simple chemistry, physics and metallurgy.
1. Resistance of wire goes up with temperature.This effect is temporary. It returns to normal upon cool-down, but can -and will- contribute to a 'click-no-start' on a hot engine. Heavier guage wire will compensate for this effect.
2, Plastic insulator decomposes at high temperature, allowing increased oxygen contact with wire. Oxidization rate increases with increasing temperature. Copper oxide is non-conductive, so as the wire oxidizes, its resistivity increases, which takes us back to #1.
When I pulled my purple wire, the insulation adjacent to the down-pipe was pretty much gone, and the wire strands were so thin and brittle I could break the wire easily with one twist.
However I agree that the solenoid cooking (which, by the way, is the same failure mechanism as above - degradation of the copper field windings- inside the solenoid) is also part of the problem and should be addressed. I chose the remote solenoid route.