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

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 11-30-2015, 02:20 PM   #1 (permalink)
Liberty Lover
 
j12piprius's Avatar
 
Join Date: Feb 2011
Location: central california
Posts: 587

pris prius - '12 Toyota plug in prius
90 day: 71.09 mpg (US)
Thanks: 417
Thanked 83 Times in 60 Posts
Oxygen sensors ~ interpreting readings

When driving and coasting in neutral, the bank 1 / 1 sensor fluctuates between low & high readings on the Ultragauge, whereas the bank 1 / 2 sensor goes to low readings and stays there.

Is this normal, or is the bank 1 / 1 sensor going bad?


Last edited by j12piprius; 12-01-2015 at 11:10 AM..
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 11-30-2015, 03:52 PM   #2 (permalink)
herp derp Apprentice
 
Join Date: Oct 2008
Location: Lawrence, KS
Posts: 1,049

Saturn-sold - '99 saturn sc1
Team Saturn
90 day: 28.28 mpg (US)

Yukon - '03 GMC Yukon Denali
90 day: 13.74 mpg (US)
Thanks: 43
Thanked 331 Times in 233 Posts
Assuming "bank 2" is actually bank 1 sensor 2
If the gauge can only read out high or low, I'd call it normal
  Reply With Quote
Old 11-30-2015, 04:34 PM   #3 (permalink)
Liberty Lover
 
j12piprius's Avatar
 
Join Date: Feb 2011
Location: central california
Posts: 587

pris prius - '12 Toyota plug in prius
90 day: 71.09 mpg (US)
Thanks: 417
Thanked 83 Times in 60 Posts
The gauge shows readings to 3 points, but they fluctuate quite a bit.

I will get samples and post them.
  Reply With Quote
Old 12-01-2015, 10:05 AM   #4 (permalink)
one of thOOOse people
 
Join Date: Mar 2009
Location: the cloud(s)
Posts: 293

twitchy - '98 honda civic dx + sir + ls
90 day: 30.2 mpg (US)

Norman - '14 Ford E-350 EXT
90 day: 15.07 mpg (US)
Thanks: 0
Thanked 81 Times in 66 Posts
Assuming we are talking about the listed 99 Civic- Bank one would be the O2 sensor before the Catalytic converter, while bank 2 is after the Catalytic converter. The bank one sensor sees fluctuating oxygen levels and adjust fuel to match. Bank two is just checking the function of the Catalytic converter so it see very little change. If you are getting so much fluctuation that the ECU throws a warning light, there may be a crack in the manifold near the bank one O2 sensor.
  Reply With Quote
Old 12-01-2015, 11:09 AM   #5 (permalink)
Liberty Lover
 
j12piprius's Avatar
 
Join Date: Feb 2011
Location: central california
Posts: 587

pris prius - '12 Toyota plug in prius
90 day: 71.09 mpg (US)
Thanks: 417
Thanked 83 Times in 60 Posts
Quote:
Originally Posted by hamsterpower View Post
Assuming we are talking about the listed 99 Civic- Bank one would be the O2 sensor before the Catalytic converter, while bank 2 is after the Catalytic converter. The bank one sensor sees fluctuating oxygen levels and adjust fuel to match. Bank two is just checking the function of the Catalytic converter so it see very little change. If you are getting so much fluctuation that the ECU throws a warning light, there may be a crack in the manifold near the bank one O2 sensor.
This must be normal then. Thanks for the explanation.

Is there any way to tell from the Ultragauge if the sensors are functioning optimally?

  Reply With Quote
Reply  Post New Thread


Thread Tools




Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com