Hi everyone. I have a 1989 volvo 240 2.3L. I haven’t had the car very long but I had a problem with randomly dying. I was getting a 131 code everytime it wouldn’t start so I replaced the crank sensor. Then it would happen again. Long story short I finally traced it down to a bad ezk (not the ecu but the other one with the black box)

I wanted everyone to know in case they were having the same issue