Question about 1995 Mazda 626

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WHAT ARE THE SIGNS OF A BAD CAR COMPUTER - 1995 Mazda 626

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The only way to condem a computer is by testing every component related to your problem. Then test the ground and power to the computer. Then clean every engine and body ground/ Then test for proper reference voltage and ground to the sensors. Then look at the compuer data and see if it reads the same as when you tested at the sensor. Then check the resistance in the signal wire if something is not the same. If 0ohms resistance then you prabably have a defective computer. Remember any system in a computer can become defective. You need to know what info is correctly making it to the computer and then what output control the computer is suppose to command. This is what you test. If you know the info is being delivered, then you test the output control at the pcm for the proper command., easy huh, lol

Posted on Jul 30, 2009

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Any number of things can be a sign of a bad computer. Only way to know for sure is to have a complete diagnostic check up done at a reputable shop or the dealership.

Posted on Jul 30, 2009

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