Go Back   EcoModder Forum > EcoModding > Hypermiling / EcoDriver's Ed
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 05-17-2012, 08:05 AM   #11 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,659

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 53.78 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 66.29 mpg (US)
Thanks: 3,405
Thanked 6,215 Times in 3,221 Posts
How do you know an injector kill switch wouldn't allow it to work?

One way to find out is to intentionally stall the truck with the gears/clutch while leaving the key alone, then try roll starting it.

Find a hill, and intentionally stall it at the top by popping the clutch in a high gear from a stop. Then roll down the hill and try clutch/bump starting.

__________________
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
Ecodriving test:
Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 05-17-2012, 09:17 AM   #12 (permalink)
EcoModding Lurker
 
Join Date: Mar 2012
Location: Worcester, MA
Posts: 72
Thanks: 6
Thanked 10 Times in 9 Posts
Body control module prevents roll starting engine (manual shift trans ) on GM vehicles 1998 and newer. Once running you can kill engine by shutting off fuel pump with key switch on. (pull out fuel pump relay is one technique) Reactivate fuel pump and it will roll start but the key switch has to remain on otherwise security light comes on. On my 1998 Eldorado security light comes on once in awhile and I have to wait 20 min. before I can attempt to restart it. Frustrating.
  Reply With Quote
The Following User Says Thank You to smokey442 For This Useful Post:
SCNTN (05-17-2012)
Old 05-17-2012, 01:15 PM   #13 (permalink)
EcoModding Lurker
 
SCNTN's Avatar
 
Join Date: May 2012
Location: Munford, TN
Posts: 87

SC1 - '02 Saturn SC1
Team Saturn
90 day: 41.8 mpg (US)

DaGnoma - '02 GMC Sonoma SL
Pickups
90 day: 25.03 mpg (US)
Thanks: 22
Thanked 19 Times in 11 Posts
Quote:
Originally Posted by smokey442 View Post
Body control module prevents roll starting engine (manual shift trans ) on GM vehicles 1998 and newer.
Do you know if this only apply to a vehicle travelling above a certain speed? I have push started the truck due to a dead battery once with no issues.
  Reply With Quote
Old 05-17-2012, 05:36 PM   #14 (permalink)
EcoModding Lurker
 
Join Date: Mar 2012
Location: Worcester, MA
Posts: 72
Thanks: 6
Thanked 10 Times in 9 Posts
There is an upper limit due to speed rating of original equipment of tires. OBII vehicles it stops fuel via injectors or pump. Later drive by wire throttle they simply throttle back. If you have a GM vehicle that has on star they can shut it off even if you don't subscribe to it.
  Reply With Quote
Old 05-17-2012, 05:49 PM   #15 (permalink)
EcoModding Lurker
 
SCNTN's Avatar
 
Join Date: May 2012
Location: Munford, TN
Posts: 87

SC1 - '02 Saturn SC1
Team Saturn
90 day: 41.8 mpg (US)

DaGnoma - '02 GMC Sonoma SL
Pickups
90 day: 25.03 mpg (US)
Thanks: 22
Thanked 19 Times in 11 Posts
Quote:
Originally Posted by smokey442 View Post
There is an upper limit due to speed rating of original equipment of tires. OBII vehicles it stops fuel via injectors or pump. Later drive by wire throttle they simply throttle back. If you have a GM vehicle that has on star they can shut it off even if you don't subscribe to it.
No I meant an upper limit at what speed you can start the engine - that seems to be my trouble. I know the fuel cutoff kicks in on my truck at 99mph, but only in 5th gear - I can push it a bit farther in 4th.
__________________



Go Team Saturn!

Coming soon... aero accessories by LowCd!
  Reply With Quote
Old 05-17-2012, 08:36 PM   #16 (permalink)
Master EcoModder
 
JRMichler's Avatar
 
Join Date: Feb 2011
Location: Phillips, WI
Posts: 975

Nameless - '06 GMC Canyon
90 day: 35.74 mpg (US)
Thanks: 186
Thanked 403 Times in 258 Posts
Quote:
Originally Posted by smokey442 View Post
Body control module prevents roll starting engine (manual shift trans ) on GM vehicles 1998 and newer. Once running you can kill engine by shutting off fuel pump with key switch on. (pull out fuel pump relay is one technique) Reactivate fuel pump and it will roll start but the key switch has to remain on otherwise security light comes on. On my 1998 Eldorado security light comes on once in awhile and I have to wait 20 min. before I can attempt to restart it. Frustrating.
Before installing my kill switch, I ran a test by pulling the fuel injector fuse. The engine stopped immediately. I put the fuse back in, and key started the engine. So, I wired the kill switch to break the fuel injector fuse circuit.

I have never had problems restarting at speeds from zero to about 60 MPH. The key switch is left on, and I do not get a security light.

__________________
The vacuum gauge plus wheel covers helped increase summer 2015 mileage to 38.5 MPG, while summer 2016 mileage was 38.6 MPG without the wheel covers. Drove 33,021 miles 2016-2018 at 35.00 MPG.
  Reply With Quote
Reply  Post New Thread


Thread Tools




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