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Odd starting problem: 02 Pathfinder

Will try to sum it up: Most of the time, the thing starts like a charm, first try. Every now and then, though, I’ll turn the key and either a) nothing will happen or b) it will slowly crank and eventually start. If nothing happens, I have always been able to try again seconds later and everything works OK. Have been through several batteries. Current battery checks out OK, as does starter and alternator.

A short circuit, perhaps? If so, how would I check it out?

Problem with taking it to a mechanic is, most of the time all is OK. No pattern as to when the trouble will occur (has yet to happen with vehicle in the shop, of course).

Could be bad starter solenoid contacts, that’s what resulted in those symptoms with my ES300, at about that age.