Archive for the 'I30' Category

2002 Infiniti I30 ECU Burned Not Starting

Carl’s question:

” My 2002 Infiniti I30 won’t start. The fuel pump won’t work, but it will start if I hot wire the fuel pump. Then it runs fine. I traced the problem to the main computer, which is burned inside. My question is this–what can I check BEFORE I buy a new expensive computer to ensure it won’t burn out again?”

Answer:

Well, you’re certainly being smart not just buying the computer and hoping that will fix the problem. You’d want to check the wiring going to the fuel pump for any type of short, and check the fuel pump to see if it’s using too many amps and is wearing out itself. BUT, also realize that the computer itself receives unfused power from MANY different sensors. So check them all, especially the idle air control sensor, because I’ve seen water intrude into the IAC sensor on those Infinitis, which shorts the sensor out. Then this feedbacks to the computer and shorts it out. I fixed one last year with the same problem as yours, and it was a leaking IAC valve that shorted out the fuel pump driver in the computer. Aren’t modern complex cars fun to work on?



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