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  • in reply to: 1993 Mazda B2600i No spark or injector pulse #665916
    CoyoteCoyote
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      [quote=”SilentDawn” post=138697]I’ve owned quite a few of these trucks…I’m a Mazda “minitruck” enthusiast. THE #1 cause of this problem is a faulty ECU. I know you said you had it repaired…But I still highly suspect it was not repaired correctly/fully and/or tested before it was sent back to you. This is very common to get a “new” or “repaired” ECU that still won’t work. Because by this time EVERY one of these ECU’s has been “repaired” by someone or are defective. These ECU’s have a 100% failure rate of the capacitors. When they fail, they leak electrolyte onto the board and corrode/break the traces underneath components. So if you don’t check continuity for ALL of the affected traces, it will still not function.

      I can offer three solutions to you.
      * You can send me your ECU and I’ll repair AND TEST it on a working B2600i I have. (Non Profit – I am not selling a service on the forum)
      * I can send you a spare ECU for testing purposes and you send it back. (I need to double check to make sure I still have one)
      * You can post up close, high resolution pictures and I can identify suspect components/traces for you to inspect and repair.

      I would not continue any further of replacing/adjusting components until we are SURE the ECU is good. I see too many of these poor trucks in the junkyards being picked apart because they just had a bad ECU that was “replaced/repaired” with another defective one.[/quote]

      I’ve been wondering about the computer, but I didn’t really no what to do about it, after the “rebuild” (which I was not impressed with) I had a friend look at it who has a electronics repair shop (he can fix anything) and he looked at it and cleaned it. He said it looked fine, there was no corrosion and nothing looked out of the ordenarry. The place I had rebuild it was AVPROECM.com and they did a awful job. when I got it back the pickup would start and run for about 10 minutes then it would turn off the injector pulse and spark. The pickup would not restart unless it sat for 1 day. Then it would fire right back up (it would run perfect) and then do the same thing. the more it was started the less it would run each time until now it wont start anymore.

      If you would want to mess with it, I would be interested in sending it to you, I don’t have anymore ideas? this B2600i is in really good condition, no rust or dents, it seems a shame having it sit here not running.
      Thanks for your help

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