Hi I have a 1991 Lexus LS400 with 211k miles on it.
Recently I was driving it in slow traffic, and while I was sitting at a red light the dash board started to light up with all these warning signals, low oil, emergency brake on, etc, when the light turned green I accelerated and all of the lights went away and my dash went back to normal. I then got stuck at another red light and the same thing occurred this time however the whole dashboard started flickering and becoming dimmer and then the engine turned off. I tried to turn the car back on but nothing happened. I had to call AAA and they said it was probably my alternator, the AAA guy zapped my battery and told me to turn off all the vents and the headlights. He also said that when I come to a stoplight I should put the car in neutral and rev the engine so that the car doesn't die again. I drove it all the way to my mechanic and parked it in his lot. I turned off the car and decided to walk home, but just for the heck of it I tried to start the car and it started it up normally. My mechanic took a look at it the next day and he couldn't figure out what the problem was, he said that alternator was fine.
Anybody have any idea what the problem is?
The alternator is about 4 years old, and I just got a new battery about 4-5 months ago.