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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 03-07-2010, 07:22 PM   #1 (permalink)
eco....something or other
 
Join Date: Jul 2009
Location: Colfax, WI
Posts: 719

wood hauler - '91 Ford F-250
Team Pontiac
90 day: 18.97 mpg (US)

Rav - '06 Toyota Rav4 Base
90 day: 26.52 mpg (US)
Thanks: 39
Thanked 61 Times in 46 Posts
been toying with the idea of just using 3rd and 4th gear....

might be a little harder accelerating uphill from a stop but would there be anything else I would need to worry about? I have a 4t60e tranny. Figured I could just use a toggle switch to turn on 4th and use a lockup switch. or an I just wasting my time and would be better off with JUST a lockup switch.

__________________



1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 03-07-2010, 07:51 PM   #2 (permalink)
Master EcoModder
 
comptiger5000's Avatar
 
Join Date: Feb 2010
Location: CT, USA
Posts: 544

RaceJeep - '98 Jeep Grand Cherokee (ZJ) 5.9 Limited
90 day: 13.62 mpg (US)
Thanks: 1
Thanked 26 Times in 23 Posts
With an auto, that won't help mpg much. You'll be slipping the torque converter a lot to get moving, so you'd also need a BIG tranny cooler to avoid cooking things.
__________________
Call me crazy, but I actually try for mpg with this Jeep:



Typical driving: Back in Rochester for school, driving is 60 - 70% city
  Reply With Quote
Old 03-07-2010, 10:02 PM   #3 (permalink)
EcoModding Apprentice
 
Bicycle Bob's Avatar
 
Join Date: May 2008
Location: N. Saskatchewan, CA
Posts: 1,803

Appliance White - '93 Geo Metro 4-Dr. Auto
Last 3: 42.35 mpg (US)

Stealth RV - '91 Chevy Sprint Base
Thanks: 91
Thanked 459 Times in 327 Posts
My dad never got used to 4-speeds. He called 1st gear "creeper" and only used it occasionally. There might be some advantage to skipping 1st if you are not in a hurry, but I'd definitely use 2nd.
  Reply With Quote
Old 03-07-2010, 10:51 PM   #4 (permalink)
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
Thanks: 1,369
Thanked 430 Times in 353 Posts
Quote:
Originally Posted by Bicycle Bob View Post
My dad never got used to 4-speeds. He called 1st gear "creeper" and only used it occasionally. There might be some advantage to skipping 1st if you are not in a hurry, but I'd definitely use 2nd.
The 2 speed powerglide is touted as one of the most efficient transmissions there is, for power transfer.

That said, without altering the transmission, I'd look at 2nd and 4th with a lockup after 20 MPH.

Shift into 4th while still locked at about 35-40 MPH.
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote
Old 03-07-2010, 10:54 PM   #5 (permalink)
epic stock master
 
luvit's Avatar
 
Join Date: Oct 2009
Location: US
Posts: 377

86 Accord LX (carb) - '86 Honda Accord LX
90 day: 35.57 mpg (US)
Thanks: 19
Thanked 17 Times in 15 Posts
i was always impressed i could start from 2nd and easily shift without the clutch on my 1985.5 lynx.

passengers would spaz-out and say "that's horrible for the car". lol.
i can't be sure i would;ve achieved 70% success on starting from 3rd.
__________________
.
single person car thread
.
  Reply With Quote
Old 03-07-2010, 10:57 PM   #6 (permalink)
Moderate your Moderation.
 
Join Date: Nov 2008
Location: Troy, Pa.
Posts: 8,919

Pasta - '96 Volkswagen Passat TDi
90 day: 45.22 mpg (US)
Thanks: 1,369
Thanked 430 Times in 353 Posts
Quote:
Originally Posted by luvit View Post
i was always impressed i could start from 2nd and easily shift without the clutch on my 1985.5 lynx.

passengers would spaz-out and say "that's horrible for the car". lol.
i can't be sure i would;ve achieved 70% success on starting from 3rd.
Lost the shift linkage in my Topaz years back, it fell right away from the transmission while I was going from 5th into neutral.

I had to move the car, so I slipped the clutch in enough to get the car moving, then just let it go and gave it really light throttle. I had no problem getting back to 60 MPH without shifting gears, it just took longer than usual.

When I got home, I bent a good sized nail, fed it through the hole, and bent the other end too. Drove it like that for another couple months back and forth to work every day.

__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Effect of gear oil viscosity on transmission efficiency (Metro owners take note) MetroMPG EcoModding Central 44 12-08-2014 11:22 PM
Met an unhappy Aveo owner today MetroMPG General Efficiency Discussion 24 10-10-2010 07:03 AM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com