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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 08-04-2010, 11:52 PM   #21 (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
my CEL is turning on/off all the time anyway. I'm not worried about it. I can put the scanner on it if it acts up.

__________________



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 08-05-2010, 10:56 AM   #22 (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
It will probably trip a CEL, but it should still run.
__________________
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 02-13-2012, 10:56 PM   #23 (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
Bringing an old thread to life. I never got around to messing with cylinder deactivation after this thread died. My apologies. I just talked with my brother again and we still want to try turning off 3 or 4 injectors and see what happens.

Even if mileage only goes up a few mpg's it will be a good mod. We don;t get to see each other a lot since he works AND goes to school. We are going to try it as soon as we get a chance. His ran low on fuel a while ago. It was only running on a few cylinders and sounded just like a little diesel running! I am really starting to love that sound. It is supposed to be warmer tomorrow, so I will try to fiddle with my injectors if I get some time.

He is really getting into this ecomodding stuff!
__________________



1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
  Reply With Quote
Old 02-13-2012, 11:15 PM   #24 (permalink)
Master EcoModder
 
Join Date: Sep 2009
Posts: 5,927
Thanks: 877
Thanked 2,024 Times in 1,304 Posts
Good way to melt the cat with 3 injectors still pumping fuel with no spark.

regards
mech
  Reply With Quote
Old 02-14-2012, 10:05 AM   #25 (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
Quote:
Originally Posted by Old Mechanic View Post
Good way to melt the cat with 3 injectors still pumping fuel with no spark.
...turning off 3 or 4 INJECTORS......
__________________



1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
  Reply With Quote
Old 02-14-2012, 12:57 PM   #26 (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
Exclamation

I have been hashing this injector business over all night.
There are two exhaust manifolds on the 300-6, one for 1-3 and another for 4-6.
If I were to disable half the cylinders, it would be 1-3 or 4-6 as dictated by the firing order. If I turn off injectors and let the engine run fresh air through the exhaust, the O2 sensor will richen up the mix in the other 3 cylinders and any benefits will be negated.

I was thinking I could make the exhaust dual until after the O2 sensor and cat. This would let the fresh air bypass the O2 sensor and the mix would stay the same without interfering with the cat.

I could install another cat (which I have) on the second line that would light when the cylinders are turned back on. I believe this mod would essentially turn the 6 into two 3's which could be run independently.

I am assuming the O2 sensor will still keep all 6 cylinders in spec. When all cylinders are lit, the output from the 3 switchable cylinders will be the same as the 3 dedicated cylinders and the O2 sensor will not know if it is seeing 3 or 6.

If you have any ideas, please let them fly. I want to find any holes in this theory.
__________________



1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
  Reply With Quote
Old 02-14-2012, 01:35 PM   #27 (permalink)
Master EcoModder
 
Join Date: Mar 2010
Location: london, on
Posts: 339

Buggie - '01 Vw Beetle TDI Gls
Thanks: 4
Thanked 32 Times in 22 Posts
Just unplug 123 injectors and go for a Drive already. run a scam gauge and post numbers. Ignore the cel light. Do it!

Too cold. It want to do it on my truck
  Reply With Quote
Old 02-14-2012, 01:40 PM   #28 (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
Here is a pic of what I would do. I will try to unplug three cylinders(they are hard to get to) and go for a drive.

Click image for larger version

Name:	modified 300-6.jpg
Views:	41
Size:	31.7 KB
ID:	10277
__________________



1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
  Reply With Quote
Old 02-14-2012, 02:27 PM   #29 (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
I just got back from a drive. I managed to get the injectors unplugged but it was cold so one of the clips broke I managed to hit 40-45 on the road, but that was it.

I am uploading the video now. It sounds and smells rich. I think the O2 sensor is richening up the mix. I will put the scanner on it and see what turns up. It sounds good on three cylinders. The camera did not do it justice.
__________________



1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
  Reply With Quote
Old 02-14-2012, 02:37 PM   #30 (permalink)
EcoModding Lurker
 
Join Date: Feb 2012
Location: palmdale ca
Posts: 50

Honda Civic - '91 Honda Civic DX
90 day: 40.65 mpg (US)
Thanks: 15
Thanked 13 Times in 13 Posts
Why not pull the pushrods for the intake of each paired cylinder, then pull the injector plugs off. Voila, no pumping losses, no wasted fuel.

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
1996 Ford F150 4.9L (300ci) I6 5MT 4x4 Christ EcoModding Central 136 09-24-2010 08:47 AM
Think you can hypermile? Ford contest will give the winner a car * MetroMPG Hypermiling / EcoDriver's Ed 6 08-04-2010 08:31 PM
2010 Ford Fusion Hybrid: Built for Ecodriving SVOboy EcoModder Blog Discussion 0 04-15-2009 05:50 PM
Ford Motor Company Johnny Mullet General Efficiency Discussion 5 07-27-2008 06:39 AM
Ford, making money? It must be a mistake... SVOboy General Efficiency Discussion 3 04-28-2008 09:28 PM



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