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Discussion Starter · #1 ·
I have a 2008 Speed 3 that will start and stall after about 15 seconds (or sooner if I step on the gas) if I have my snap on scanner on it and go into "Output controls" I can turn on the fuel pump and the car will run like a scalded dog! if I dont turn it on electronically, I wont get out of my driveway. Low pressure fuel pump runs with scan tool. GDI pump obviously works. I even replaced the "fuel pump resistor module" on the body above the transmission.

please help!!!!!!
thank you
 

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that is a good one
as you can manually activate pump it confirms the fuse, relay and pump are good
as the car runs when manually activated it confirms crank angle sensor, rpm input to ecu
i have no idea except software
check as much live data as you can think of, any codes pending or set
 

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just had another thought
i have heard that usa cars have a fuel shut off if vehicle involved in rear end collision
does the mazda have this and how does it work?
separate input to ecu?
 
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