Traffic Jam = P&G opportunity = FE++ - Page 2 - Fuelly Forums
Go Back   Fuelly Forums > Fuel Talk > General Fuel Topics
Search Today's Posts Mark Forums Read
Thread Tools Display Modes
Old 05-14-2008, 11:21 AM   #11
Supporting Member
DracoFelis's Avatar
Join Date: Aug 2006
Posts: 265
Country: United States
Originally Posted by theholycow View Post
You shouldn't get the "your key is still in the ignition" alarm if you turn it back to "On" after killing the engine. I've been EOCing into my parking space every morning lately.
I'll try it again some time (likely going into the parking space), just to make sure.

However, if I'm not mistaking, I tried that experiment before, and it didn't silence the alarm in my car. As far as I can tell, in my car once the alarm goes on, simply putting the switch to "on" doesn't silence the alarm. Instead, you either have to either: A) Phyiscially remove the key and reinsert it. or B) Fully start the engine (not just turning the key to "on").

DracoFelis is offline   Reply With Quote
Old 05-14-2008, 01:29 PM   #12
Registered Member
Join Date: Mar 2008
Posts: 408
Country: United States
"I used to think the fuel cutoff threshold was around 1000 RPMs"

According to the service manual (pg 11-29), DFCO for the VX is 850 rpm. For other models, it varies from 870-930. This is for the '92-'95 Civic.

I've verified this by observation, with a meter that monitors the injectors. But I haven't checked to see what happens with a cold engine.

Trivia fans might be interested in knowing that the VX also has fuel cut-off at 113 mph.

On the subject of coasting in gear: I think it's a waste, unless it's your intention to slow down. Think about it this way. If I coast in neutral, I'm using just enough fuel to make the engine spin at idle speed (in my car that's 600 rpm, assuming accessories are turned off). If I coast in gear, I'm using a portion of my momentum to make the engine spin at some higher speed, perhaps 1500-2000 or more. It seems inevitable that this consumes more energy than making my engine spin at 600 rpm. So unless I actually have a need to slow down, and assuming I'm not going to use EOC, then I'm better off consuming fuel to spin the engine at 600 rpm, as compared with consuming vehicle momentum to spin the engine at 1500. The fuel and the momentum are both energy, just in different forms. Conserving momentum is just as important as conserving fuel.

monroe74 is offline   Reply With Quote
Old 05-14-2008, 01:44 PM   #13
Registered Member
Join Date: Jan 2008
Posts: 12
Country: United States
luckily my commute tends to be in the opposite direction of traffic, so i usually dont end up in bumper-bumper jams, but i would like to try this if i do. I was fortunate to hit some bad traffic right at the crest of a really long hill a few weeks ago, and was able to keep my engine off for the duration. Roughly 10mins and 1.2 miles, plus i was able to bump start at the end... I need a scanguage, just to entertain myself at least.

Baranfin is offline   Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel cut-off threshold speeds GasSavers_Rotareneg General Maintenance and Repair 10 08-13-2007 05:27 AM
96-98 civic hx mt engine wiring harness pappajohn Wanted to Buy 4 03-10-2007 04:17 AM Stickers Matt Timion Fuelly Web Support and Community News 7 10-12-2006 03:48 PM
State of the Union address touches on "oil addiction." Matt Timion General Discussion (Off-Topic) 31 02-06-2006 03:38 PM
Where to get parts? What parts do we need? Matt Timion Electric and Solar powered 11 09-19-2005 08:37 PM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -8. The time now is 04:32 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.