regarding "Aftermarket" remote start
Background: we paid to have aftermarket remote start added to the 'wifes' '95 LHS (Chrysler)
About 2 years later she would be driving it.. everything would die.. and it wouldn't restart.. I'd rescue her in my truck and tow the LHS home.. once home it would start like nothing ever happened.. This happened several times over the course of a several months, at random intervals, no codes were ever set.
I (eventually) pulled all the plastic off the engine covering.. and I noticed a purple wire draped across the top of the engine.. I traced it out, it went to the gizmo that was like an old l distributor, and then went thru the firewall..
This turned out to be the speed signal to the remote start system that told it to stop cranking, because the engine was up to speed.
I deduced this wire had bounced and rubbed enough in the 2+ years it wore thru a spot in it's insulation and was grounding out the speed signal to the computer.. thus the compute S/D the engine.. Towing it home always seemed to bounce it around enough that the ground disappeared only to reappear a week or a month later.
I lengthened the wire, ran it in loom and along the firewall AWAY from heat and metal.. Several years later and over 250K miles on the LHS, this problem NEVER reappeared..
Even though nearly 3 years had passed, I did made a trip to the installer to vent my frustration about their crappy installation BUT, It turns out they went out of business long before.. I can guess why.