2007 Mustang INERTIA FUEL SHUT OFF

[Falcongunner]

Anybody ever have one of these get funky? My son's 2007 V6 Mustang is driving me nuts. After hours of trouble shooting and replacing the fuel pump with a used one I I thought of the shut off switch. Pushed the button, started right up the crapped out about ten miles later. Trying to limp this thing home by re-setting the switch. Starts stuttering then quits and will not start.

Wayne in FW

[Mysticcobrakilla]

Jumper the switch or hard wire it in?

[shumpertdavid]

I've never seen an inertia switch go bad where it trips itself without a very solid hit like a big pothole, something in the road, accident, etc, but like Mystic said bypass it. Just unplug the switch and put a piece of jumper wire in the connector. I would recommend from now on checking for voltage at the fuel pump before just replacing one because you think it's bad.

[Falcongunner]

I had voltage at the pump (voltage light) and that's the reason I replaced the pump since I had one on the shelf. If I was understanding the 4 points on the pump connector I had no ground and that when I thought of the inertia switch. I will pull the switch tomorrow and by pass for a test. There is also a fuel pump driver module that could be acting up. This Mustang was wrecked once front an rear.

Wayne in FW

[Falcongunner]

Finally figured this out. fuel Pump Control Module. Threw no codes, worked intermittently, had power to pump. Runs great now.

Wayne in FW