I just got a 1984 Ford station wagon. It has the dual point fuel injection crap. Well we started it up and ran fine so we started ripping stuff out of it. Well I tied the back seat up to a tree and ripped it out and when it came out the car just died. The fuel pump just quit working. Well after looking around for awhile trying to figure out what it is I was told it was the inertia switch the cut the power to the fuel pump while in a collision. I though no big deal I will just wire a hot switch to the fuel pump. Well I did all that fuel pump turned on and is working fine but still no start. I checked about everything and I am getting 13 pounds of fuel pressure at the carb, just the thing is it is not going through the injectors. I don't know if the inertia switch is someway part of the injectors or what but it is really starting to confuse me. There is no way that the injectors are clogged either the car was running perfect until it was in a collision. My only other option unless somebody can figure this out for me is to put a new intake and carb on it and do away with the fuel injection but that is alot of work for a derby car.

 

Find the inertia switch and disable the "inertia" part? either cut and splice or pull the switch apart and find what makes it work.

I agree the last thing you need is an operational inertia switch in a demmo derby.....

 

But I have hot wired the fuel pump and it still don't start is that still the inertia switch?

 

Maybe the inertia switch also kills the fuel injection computer.

On my old ford the inertia switch was mounted on the back wall of the trunk. It was a box with a little red button on it. The button popped out once when I was in a minor acicdent. Wouldn't start, reset the button, started right up.