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Amedee, Mazda Technician
Category: Mazda
Satisfied Customers: 26414
Experience:  ASE Technician advanced level specialist. Wisconsin certified emissions state inspector
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2004 Mazda 3: fuel pump..a bunch of 10amp fuses but it wont start

Resolved Question:

My 2004 Mazda 3 2.4 won't start. It turns over, the fuel pump is working, I replaced a bunch of 10amp fuses but it won't start.
Submitted: 6 years ago.
Category: Mazda
Expert:  Amedee replied 6 years ago.

Does the check engine light come on with the key on?

Does it go off when cranking the engine over?

Are there any codes in the computer?
Customer: replied 6 years ago.
No the check engine light does not come one with the key on
Not sure what you mean codes in the computer - I'm a normal person not a mechanic
Expert:  Amedee replied 6 years ago.
Well this is your problem! Your computer is not even awake! Chances are you are missing a power or a ground to the computer causing it not to wake up. The only other possibility would either be a bad computer or the computer is being shorted out by another computer or a sensor. I would start by checking all powers and grounds going to the PCM. THis includes all powers from all fuses, fusible links and even from the ignition switch.
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