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I writed that everything runs perfectly when key is on the start. just the fuel pump stops working if key released.

Any help?

I figured out that car will runs good when the key is holding on the start position, but when I release it it will not. I tried change ignition switch but no luck. I read the internet that it can be the ballast resistor problem, but does mazda mx3 have one? Maybe someone can upload photo or tell ...

In Lithuania (Europe). Everything was good but after I changed fuel filter the car wont start. So I think it isnt major problem.

Whats is that cel? Some time before I was able to make it with led

Checked the diagnostics, but it shows nothing, before all problems I was able to check errors by myself but now nothing shows up (I know that it have to show 1 error). Connected LED to FEN and B+ doesnt blink. So where can be the problem?

UPDATE.
I tried start engine by pulling my mx3 with other car, because I wanted check if this is the starter problem, what was strange that the car doesnt start, but when I tried hold the key on start position it starts and runs perfectly but if I release the key the car engine stops working ( like ...

Maybe I will try check ecu for errors. If it is the electrical problem ecu should give some error.

The sound is comming from back.

The pump isnt working while you turn the key to On it only works when you turn your key to start. I am sure that sound comes from it. I will check cables and post a reply for you.

The starter doesnt make any sound at all. When it happened it was verry strange, I thinked that battery was died, then tried another one fully charged but result was the same. Yes the lights comes on like always when I turn the Ignition ON. I checked the fuses, I think it was okay but I will recheck ...

I changed the fuel filter, but now it even doesnt start When I try to start the engine I only hear the fuel pump sound but the starter doesnt work. I checked the cables everything seems fine, no cables around fuel filter so what can I maked wrong?

I will try change the filter. About witch screen youre talking about? Do you mean the filter witch comes with fuel pump? Yes its still there I even try cleaning it, but also new pump comes with new filter so the problem not with it.

Hello, I need your help alot, because everything went bad, heres the story:
I was driving mx3 1.6 sohc with small amount of fuel (now I think I was stupid enought) and then it went over, the car engine stops. I came back with my other car and I pour more fuel ~10 liters. After that i start engine ...