This is topic no power to inertia switch ??? in forum Tech Talk at Northern California Ford Owners  .


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Posted by 94OnDuces (Member # 9555) on :
 
where should i start checking to find out where the short could be?

there is power from the fuse under the hood
and ive swapped out the relay with a working one
 
Posted by Ryan_LX (Member # 7089) on :
 
You tested the fuel pump really under the seat with a volt meter?
 
Posted by Blind (Member # 3052) on :
 
the fuel pump relay turns the power on for the inertia switch.

the EEC relay turns the power on for the fuel pump relay

the ignition switch/PATS/EEC turns power on for the EEC relay.

work backwards.
 
Posted by Ryan_LX (Member # 7089) on :
 
quote:
Originally posted by Blind:
the fuel pump relay turns the power on for the inertia switch.

the EEC relay turns the power on for the fuel pump relay

the ignition switch/PATS/EEC turns power on for the EEC relay.

work backwards.
what he said, I was going to get to that [Big Grin]
 
Posted by SLOWSN95 (Member # 8269) on :
 
Look in the trunk on the left side kind of near the taillights. The inertia switch is mounted up against the back of the car. There should be a reset button on it. You dont hear the fuel pump turn on at all??
 
Posted by rollininmy50 (Member # 9067) on :
 
have you messed with the solinoid lateley??the one on the inner fender next to the water bottle??, pretty sure youve checked it, cause i didnt have power to the fuel pump with the one wire disconnected
 
Posted by 94OnDuces (Member # 9555) on :
 
so here is a lil update that might help with what im going thru now.

-so i checked for power at the switch = no power
-ran a power lead to the switch and pump turns on and stays on
-but for some reason if i run a new line from the positive wire for the inertia switch from the inside fuse box to the inertia switch itself in the trunk i also have power with the fuel pump stayin on constantly.

- the new problem just when i though i made progress when i check the fuel rails for fuel nothing is there even though the pump is whining
[Frown]
 
Posted by Blind (Member # 3052) on :
 
so what you've done is determined that your battery works, and your fuel pump will run when given +12v

what you haven't done, is you haven't determined if the ignition switch, the EEC, the EEC relay, or the fuel pump relay is being fired.


no pressure at the rails isn't good, how much gas is in the car? check to make sure the fuel lines aren't pinched, and that does mean checking all the way from the fuel filter up to the fuel rail.
 
Posted by 94OnDuces (Member # 9555) on :
 
ok so i found out where i loose power.
i have power in the inertia power line all the way to the ANTI theft box that is located on the driver side in the trunk. when i turn the key on and off i here a clicking sound comming from that box.

after that box theres no power to the switch

car is a 94 gt vert 5.0 [Frown]
 




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