My first ever car: a 1988 Eagle Premier ES sedan. Bought used in 1992 after I graduated from college and got my first job, which was in suburban NJ and required a car. THE WORST.
I only had it for about two years and it constantly had electrical problems, like cabin lights or power thingies not working. But worst of all was it had some kind of internal connection (in the fuel injection system?) that caused the car to simply not start from time to time. This started to hit me about 6 months into owning the car.
Turning the key in the ignition would do nothing at all, except turn on the dash and cabin lights. BUT, if I just waited a bit, sometimes hours later, it would start up.
Of course, I didn't know that at first. Oh, no. The first time, I called AAA to tow my "disabled" car, but then when they arrived 90 minutes later, the car started right up. Made me look like a right idiot.
A Chrysler dealership and two independent mechanics couldn't figure it out, though they helpfully charged me big bucks for a just-outta-college kid to replace the FI module and do a "deep cleaning cycle" of the fuel system, only to have it keep happening again. About once every three weeks.
It has an interesting end to the story, though. I eventually discovered a workaround. Or rather, I found out about one in a very memorable way.
I had street parked my car in 1993 Washington Heights (upper Manhattan, near the George Washington Bridge) while visiting a friend there one Saturday night. I came out to drive home after midnight, and the car wouldn't start again. This was kind of a drug-dealing-and-doing-notorious type neighborhood at the time, so I wasn't very happy about standing in front of my car with my hood up, desperately trying to maybe see something obvious, and going to try starting the car again every few minutes (nope).
A self-professed homeless guy in filthy sweatpants walked up to me on an otherwise dark and empty street, which made me nervous, but it was just to beg money off of me. I told him I had problems of my own.
"Oh yeah, like, your car won't start? Let me take a look. I used to work on cars." Sure, why not. I certainly have no better option than just trying again an hour later.
He literally poked around under the hood, then reached in and gave something a vigorous wiggle. "Try starting the car."
And... It started!
He pointed out the part he'd wiggled. "Something in there must be loose, but you only need it to start the car going, so you should be fine after it starts up."
I gave him $20 - all the cash I had on me. He'd earned it.
And he was right. Every time this hit me with that car, from then on - and it happened like once every 2-3 weeks - shaking that part worked to start it again.
What a joke. A dealership and two mechanics couldn't figure that out with me leaving the car with them for days on end, charged me parts and labor to not fix it, and some homeless guy, possibly a drug addict, nailed it in five minutes.
And of course... What a POS car to have that problem with just 4 years and 40,000 miles on it since rolling out of the factory!