Go Back   EcoModder Forum > EcoModding > EcoModding Central
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 10-15-2008, 10:17 AM   #1 (permalink)
Master EcoModder
 
Join Date: Feb 2008
Location: Omaha Nebraska area
Posts: 271

Civic - '98 Honda Civic DX
90 day: 41.44 mpg (US)
Thanks: 1
Thanked 8 Times in 5 Posts
Idle at 20mph

Theres a side road I usualy take on my way to work...minimal stops, and minimal traffic.
The speed limit is 25mph. I found yesterday that my car will hold 20mph when I take my foot off the gas. The engine drops back to idle (like Idle in drive at a stop light) It shifts to 2nd gear at about 15mph under slow accleration.

Is this a more efficent than keeping the throtle open to hold 25mph? Because the RPMS drop from like 1,500 to 800ish

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 10-15-2008, 10:21 AM   #2 (permalink)
Master EcoModder
 
The Atomic Ass's Avatar
 
Join Date: Oct 2008
Location: Mason, OH
Posts: 528

Priinochio - '17 Toyota Prius Two Eco
90 day: 67.19 mpg (US)
Thanks: 11
Thanked 12 Times in 12 Posts
You'd have to test that one on your own, probably... But I can only imagine it helps.
__________________
  Reply With Quote
Old 10-15-2008, 10:57 AM   #3 (permalink)
EcoModding Lurker
 
Join Date: Jul 2008
Location: Spring TX
Posts: 62

F150 - '97 Ford F150 Lariat

Taurus - '02 Ford Taurus SE

the 73 - '73 Ford Thunderbird

the race car - '95 Ford Thunderbird LX

The Brick - '98 Buick LeSabre Limited
Thanks: 0
Thanked 0 Times in 0 Posts
put it this way......anytime you are not touching the gas, you are using less.
  Reply With Quote
Old 10-15-2008, 06:52 PM   #4 (permalink)
Master EcoModder
 
Join Date: Feb 2008
Location: Omaha Nebraska area
Posts: 271

Civic - '98 Honda Civic DX
90 day: 41.44 mpg (US)
Thanks: 1
Thanked 8 Times in 5 Posts
I figured that but I didn't know if vaccume pressure would affect this any.
  Reply With Quote
Old 10-15-2008, 07:39 PM   #5 (permalink)
Boxhead
 
whokilledthejams's Avatar
 
Join Date: May 2008
Location: Fredonia, NY
Posts: 322

Boxy Brown - '04 Scion xB
90 day: 35.48 mpg (US)
Thanks: 0
Thanked 1 Time in 1 Post
Send a message via AIM to whokilledthejams
An old roommate of mine had an old Chrysler M-Body with a 3-speed Torqueflite that could be coerced into idling along in 3rd, at around 25mph. Really nice in city driving.
__________________
  Reply With Quote
Old 10-15-2008, 09:05 PM   #6 (permalink)
Pokémoderator
 
cfg83's Avatar
 
Join Date: Dec 2007
Location: Southern California
Posts: 5,864

1999 Saturn SW2 - '99 Saturn SW2 Wagon
Team Saturn
90 day: 40.49 mpg (US)
Thanks: 439
Thanked 528 Times in 355 Posts
Binger -

I think you have found a comfortable sweet-spot for your Mirage. It's especially nice that the road's speed limit makes your speed look "normal". 20 MPH is probably the drop-dead-bottom-practically-idling 5th gear speed for my car too.

I wanted to find some gear ratios for your tranny, but all I could google were these URLs :

1991 Mitsubishi Mirage

Mitsubishi Mirage pictures 1991 models

CarloSW2
__________________

What's your EPA MPG? Go Here and find out!
American Solar Energy Society
  Reply With Quote
Old 10-15-2008, 09:21 PM   #7 (permalink)
Master EcoModder
 
Join Date: Feb 2008
Location: Omaha Nebraska area
Posts: 271

Civic - '98 Honda Civic DX
90 day: 41.44 mpg (US)
Thanks: 1
Thanked 8 Times in 5 Posts
theres a good sized following for these cars but most people swap 4G63T's in to them so no one knows what the stock specs are
  Reply With Quote
Old 10-16-2008, 12:42 PM   #8 (permalink)
Master EcoModder
 
NeilBlanchard's Avatar
 
Join Date: May 2008
Location: Maynard, MA Eaarth
Posts: 7,873

Mica Blue - '05 Scion xA RS 2.0
Team Toyota
90 day: 42.48 mpg (US)

Forest - '15 Nissan Leaf S
Team Nissan
90 day: 156.46 mpg (US)

Number 7 - '15 VW e-Golf SEL
TEAM VW AUDI Group
90 day: 155.81 mpg (US)
Thanks: 3,386
Thanked 2,883 Times in 1,812 Posts
Hello,

For me, idling in 3rd or 4th gear (15-20mph) returns great mileage: 40-50mpg. Fifth gear is a little tougher to hold a speed on level ground at idle.

Throttle position is everything in FE. If I can hold the TPS to 19-20 (my xA displays 12TPS at idle when my foot is of the pedal), then my FE is much better than if it is at 21 and above.

__________________
Sincerely, Neil

http://neilblanchard.blogspot.com/
  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Honda IACV explained TomO Off-Topic Tech 16 12-21-2015 01:49 AM
Disconnected Idle Air Control - for lower RPM after a cold start Lazarus EcoModding Central 19 04-15-2011 03:50 PM
Idle Speed Adjustment '89 Metro SirKeats DIY / How-to 7 02-08-2010 02:23 PM
Altered Idle Speed After Performing EOC Tango Charlie Hypermiling / EcoDriver's Ed 20 11-19-2008 12:41 PM
Engine Idle i_am_socket EcoModding Central 3 06-06-2008 04:03 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com