A fuel pump kill switch you DON'T have to activate when you turn the car off!

Self resetting kill switch. This kill switch automatically turns itself and the fuel pump off every time you turn the engine off. To activate the fuel pump, press the supplied push button while turning the key to on. If you forget you can push the push button at any time to activate the relay however it may take a few seconds longer to start the engine if you forget to do it while turning the key. Because of this reason it is suggested that you locate the push button somewhere that you can reach it with your left hand.

A "bypass" strap is included when you want to disable the kill switch. The bypass switch restores the operation of the fuel pump to normal operation.

This kit contains

Two automotive relays with sockets
One pushbutton switch with 30" of lead wire
One extra spare automotive relay
One bypass strap

The automotive relays and bases are reclaimed GM relays and bases. Replacement relays can be purchased at any parts store.

This kit installs in the console area. The switch can be located anywhere the wire reaches

Four wires of the kit will attach to:
Each end of the CUT fuel pump power supply wire in the center console area
Two other wires located in the center console area

Printed instructions are included with each kit.

Cost - $29.80 plus $5.20 shipping to anywhere in the USA.

------------------
http://reddevilriver.com

[This message has been edited by phonedawgz (edited 09-25-2011).]

Could you post pictures of the push button with something next to it for a size comparison? Thanks!
-Josh

My daughter is back from Honduras (Peace Corps) for the week and has my (her) Fiero. I should be able to post some later this week. The push button could be whatever size you want. It is a low voltage, low current normally open momentary switch.

[This message has been edited by phonedawgz (edited 06-15-2011).]

Good idea. I'd like to see pictures too.

Nolan

[This message has been edited by Sourmug (edited 06-15-2011).]

I'll keep an eye out for those pics I'm definitely interested.

Sounds pretty cool, I think I'll take one.
Assuming you’ll be making and selling more than 1 of these, I’ll get one when it’s ready for the road. I’m in the middle of a panel off paint job right now but when I’m done I’m in.

Bump. Still very interested

I changed the operation of the kill switch system. When you first turn the key on, the fuel pump relay activates for about 1 second. That is independent of if you push the 'activate fuel pump" button or not. Two things are gained by this. One is that you don't have to mount it to the left anymore. Mount it to the right and activate the button after you turn the key to on. The second is the engine normally will start but then fail shortly after. This should discourage would be thieves by making them think your car is a POS not worth stealing instead of thinking you have a kill switch installed. If they turn the key off and back on the same thing will repeat.

The basic system


The system installed


One suggested location for locating the switch.


The switch would be located all the way up in the console so the button is not reveled. After turning the key to on reach the button and press it. The fuel pump relay will 'latch' up till you turn the car off. Nothing needs to be done to activate the system when you turn the car off.

If you ever need to over ride the system - for testing or let say your mother in law is going to drive your car, one of the relays can be removed and a simple strap installed disabling the relay.

Four connections are needed to your Fiero. One connects to ground (blue ring connector under the stock screw in the upper right). The pink wire connects to the ignition source as shown, and the two orange wires connect to the fuel pump supply wire as shown. Soldered connections are recommended. Shrink tubing sleeves are included with the kit.



To order PM me and I will PM you with ordering instructions. Payment by PayPal or mailed check.

[This message has been edited by phonedawgz (edited 06-27-2011).]

PM sent

Got mine in the mail yesterday! Looks great! I will post again once I get it all hooked up

Does this eliminate the computer sending the power to the fuel pump relay? I have issues with my computer not sending the power to the fuel pump relay and this would kill two birds with one stone.

It sits inline near the ECM and blocks the power from going to the relay unless activated. It doesn't replace the relay.

So did your relay hang upside down on it's wire? If so your fuel pump relay socket needs to be replaced. It fills with water and corrodes nasty.

How does this work when the engine is cranked long enough to build oil pressure and the oil pressure switch contacts close and run the fuel pump?

Burned out two oil pressure switches.

The ECM is supposed to activate the fuel pump relay and turn the pump on when you first turn the key on for two seconds, and anytime it sees an ignition pulse and for two seconds after.

The oil pressure switch ALSO can turn on the fuel pump. Either can supply the fuel pump power, and usually in a correctly running Fiero both are turned on. The reason GM used two was so if one failed, the other would still keep it running and get you home.

If you don't hear the fuel pump run the 'prime' when you turn the key on, then the ECM->Relay part isn't working. You can still crank the car for an extended period and get the oil pressure switch to close and turn on the pump.

[This message has been edited by phonedawgz (edited 09-19-2011).]

So then your "Self Setting Fuel Pump Shut Off" stops the power from going to the appropriate pin on the ECM, and the ECM still controls the relay, is that correct?

The relay breaks the Orange/Black wire - that runs from the Fuel Pump fuse to the Fuel Pump Relay. When you first turn the key to on, the relay is designed to come on for a second and then it drops off - unless/until you push the button and then the relay stays activated and supplies power to the Fuel Pump Relay till the key is turned off.

Now tie it into a g-shock switch that will kill the pump if the car is in an accident.

Not needed. The ECM / Oil pressure sensor will turn off the fuel pump a few seconds after the engine stops running

------------------
http://reddevilriver.com