Inertia Switch

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Aug 22, 2003 | 11:43 AM

Patrick8475

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Joined: Aug 2003

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From: Erie

Inertia Switch

Hello
I was wondering if anyone could tell me where the inertia switch is located, and how you shut it off.

Thanks
Patrick

Aug 22, 2003 | 11:47 AM

jbalestri

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Joined: Dec 2002

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From: Billings MT

Inertia Switch

It should be on the firewall, behind the clutch/brake pedal assembly in the cab. There is a red plunger type switch. I do not remember if you push it down, or pop it up. It is protected by a black collar for safety. I think you push it down. To activate it, just take a small screwdriver and pop it up.

Aug 22, 2003 | 11:48 AM

frogger01

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Joined: Mar 2001

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From: Corona, CA

Inertia Switch

Depends on the year. I know in the Early-mid 80s it was located on the firewall on the passenger side and in 92-96 it was located in the passenger kick panel up at the top. As for 87-91 I dont know it's exact location.

Aug 22, 2003 | 04:30 PM

JBronco

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Joined: Jun 2001

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From: Loveland, CO.

Inertia Switch

What's an inertia switch? I never knew I had one. I'm guessing that this is something to turn the fuel pump off or something if the truck tips over?

Aug 22, 2003 | 04:43 PM

jbalestri

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From: Billings MT

Inertia Switch

It is on fuel injected vehicles. It kills the power to the fuel pumps when the vehicle encounters a hard enough bump. It's a great way to shut the pumps off to relieve the system of pressure for fuel filter changes, etc.

Non-fuel injected do not have a inertia switch.

Aug 23, 2003 | 02:55 PM

steve83

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Joined: Nov 2002

Posts: 9,987

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From: Memphis, TN

Inertia Switch

Quote:

Originally posted by jbalestri
Non-fuel injected do not have a inertia switch.

Any vehicle with an electric fuel pump SHOULD have an inertia switch. It keeps the pump from flooding the engine bay with gas if a fuel line ruptures in a collision. Some carb vehicles use an electric fuel pump, so they have an inertia switch.