Emergency shut off

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Apr 6, 2014 | 04:25 PM

aal2016

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Emergency shut off

Hey guys and gals,

I have a 1995 F-150 4x4 automatic with the 4.9L inline 6, and a non-tilt steering wheel. My key recently broke off into my beat up ignition cylinder, so I replaced the cylinder. Problem is, now the key works and the cylinder is in good shape, but i get no resistance at the off/ACC functions, and am unable to turn off the vehicle. After researching this forum I know the problem is most likely the ignition switch or the ignition actuating rod(s) (which i believe is the name of the two plastic parts that connect the cylinder to the switch).

I am going to make an attempt to pull the wheel and fix this. But this is my primary vehicle, and as i am an newbie to mechanical projects, I will need some time to do this.

In the meantime, is there a GOOD/BETTER/SAFE way to stop the truck without the key? I have been choking the truck out by disconnecting the air hoses and covering the intakes (as well as disconnecting the battery). But I have to use the truck this week, and if there is a way thats easier, I would really appreciate any help.

Perhaps pulling one of the fuses and disconnecting the battery?

Thanks!

Drew

Apr 6, 2014 | 04:45 PM

Crewcabber

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From: Lynnwood Wa.

Look in the manual and find the fuse that controls the fuel injection or ignition. Pop that baby out and no fuel or spark and no run. Hope that helps.

Apr 6, 2014 | 05:22 PM

aal2016

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Thanks crewcabber!

Apr 6, 2014 | 05:47 PM

aal2016

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relay 2 is listed as "fuel pump" (gas engine)

fuse 22 is "ignition coil" (gas engines)

fuse 8 is injector driver module

fuse 16 is fuel pump feed (gas engine)

Any one better than the others?

Apr 6, 2014 | 06:19 PM

dixie460

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From: SW Florida

Just do what I do when I'm working under the hood and wanna cut the engine... unplug the ICM on the driver side fender.

Apr 6, 2014 | 06:29 PM

aal2016

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Quote:

Originally Posted by dixie460

Just do what I do when I'm working under the hood and wanna cut the engine... unplug the ICM on the driver side fender.

Hey dixie, I'm sorry, I don't know what an ICM is! Tried to look up pics but a bunch of different stuff came up. Could you explain what that looks like and what it does?

Apr 6, 2014 | 06:38 PM

dixie460

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From: SW Florida

Look at the pic in post #2 of this thread:
https://www.ford-trucks.com/forums/showthread.php?t=1307819

The ICM (also known as TFI module) is the black or grey box mounted to the aluminum heat sink (the square thing with cooling fins on it). It's near the hood hinge on the driver side. Unplug it to kill the engine instantly. And when you go to start it again, don't forget to plug it back in first, or it won't start.