EOC: From Key to Killswitch - Shoulda done this long ago...
 

So for the last ~year (or however long I have been doing the hypermilage thing), I have been clicking my key back, waiting, clicking forward. This killed stereo, turn signals, vents, etc. as well as temporarily caused the odometer to stop reading.

Just the other day, I ran a set of wires from my dash, to a normally closed push-button momentary switch, and split into the ASD relay ground. When pressed, this kills both fuel injection and spark.

After driving around for the first day, I just can't believe I didn't do this earlier! My stereo stays on, odometer readings are now going to be more accurate, the odds of my engine re-starting when "clicking the key back" drastically drop (was always in a hurry to click it back on, sometimes engine didn't die all the way).

Just letting you guys know who HAVEN'T wired one up to do so. Now.

Woohoo! Another soul dragged over to our side of the Force:D

Yeah, the kill switch totally makes EOC much easier to do. I had the exact same experience when I first put mine in.

Is there a how to for the kill switch you used?

Mine, specifically, was a combination of internet research and applied knowledge of electrical engineering. It was a Dodge Neon (1st gen). I can do a write up for it, specifically, but each car has slightly different ways to do it.

Basically, when the key is off, it tells the computer to stop grounding the relay that keeps spark and fuel going to the engine, turning it off. I cut that wire and "extended" it into my cab, to a switch that always sends the signal, and back. This kept the ground going, just like stock, but when I push and hold the button, it clicks the relay off, turning power off to fuel injectors and spark coil pack, just like the ECU would do with the key off.

Or if you can find the camshaft position signal, cut that with NC switch.
If your car does'nt have cam sensor, then cut hall-sensor signal.
How-to is in the: http://ecomodder.com/forum/showthrea...-how-4356.html

If you make a wright up I will add it to our wiki :) might help others do the same!

do you have gray or black key fob?

gray means you have chryslers sentry key system; it's an add-on system that turns off the engine via spark and fuel and normally operates a relay.

there might be a fuse in that system that can be used to turn off the spark and fuel; if there is, it will probably be in the fuse box under the hood.

or it was on my 99 tj

I am getting used to using my kill switch, Its pretty sweet to be coasting down the long steep hills in gear engine off with power steering / brakes and battery charging :)

Just another update on this. I have found myself doing FAR more EOC than before. I'm not sure if it's convenience, or what it is, exactly... but... I do it more now. I don't know how this has effected my MPG yet, but I'm hopeful.

Before, I had key places that I would EOC (typically to a stop or a far-away turn). It seems that if I would idle, I'm usually EOC now (unless I know I'll be needing the engine on within ~10 seconds or so).