KILL SWITCH

Joined: 19 Aug 2008 Location: LA

KILL SWITCH

anyone have one?

fuel pump or other

Joined: 25 Oct 2003 Location: Melbourne Australia

I dunno, they are so easy to bypass I am not sure they're worth the trouble. I mean it's pretty easy to hotwire a fuel pump or a coil.

Joined: 28 May 2004 Location: Perth, WA

Kill switch as in my cars rolled over and pissing fuel everywhere and i wanna stop the engine or kill switch to stop the bastard thieves??

A number of people here have fitted them to the fuel pump and hidden the switch but if someone wants your car then they'll find it eventually. Just might slow them down enough to be caught but.

If you want a kill switch for emergencies I think the best thing to do is isolate spark first then fuel. I know a lot of modern cars after accidents (usually only ones sever enough to deploy air bags and such) wont restart due to the fuel pump being cut off until an error code has been reset. Its meant to prevent fuel being sprayed out in case of fire (well that's my completely uneducated guess anyway...).

Joined: 25 Oct 2003 Location: Melbourne Australia

Ah, I think I probably misunderstood the question.

Joined: 04 Mar 2008 Location: Gympie Qld

I think some cars or people trigger the fuel pump from the oil presssure light circuit. I assume that means in a roll over the oil pump starves pretty quickly and therefore pump shuts down. You would hope so otherwise pretty useless. Certainly would be a good auto switch if effective.

Joined: 11 Jan 2004 Location: Adelaide

fester2au wrote:

I think some cars or people trigger the fuel pump from the oil presssure light circuit. I assume that means in a roll over the oil pump starves pretty quickly and therefore pump shuts down. You would hope so otherwise pretty useless. Certainly would be a good auto switch if effective.

So how would you start it? Razz

Seriously, an interlock like the oil pressure switch is a good idea, but you need some form of bypass for starting - not difficult to do, but an extra complexity in the circuit.

If it's a security thing, I agree that they only buy time, or deter joy-riders. If a professional thief wants your car, you may as well hand over the keys.

If it's a motor sport thing, I would expect the rules would set minimum standards, and I thought a battery disconnect was a typical requirement. If that's what you're after, you might be better off in General Tech.