O2 Sensor ?
Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
Burning Brakes
Joined: Mar 2010
Posts: 1,189
Likes: 4
From: Freeport, FL
Ohm's is to resistance as torque is to twisting force
It's just a unit of measure.
Gosh, it's been a long time since I cared to test or check O2 sensors, but I think a good indication is whether or not they are cycling between high and low voltage. Hook up a scan tool and watch the voltage. Or just replace them if they have high mileage.
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
The stock narowband 02's are measured in millivolts---and actually have a range of 0-1 volts- The key to see if the 02's are working is if they are oscillating (bouning around) very rapidly between.100 and .950 millivolts in closed loop ( while the engine is running)--The engine when cold started or started warm --will be in open loop briefly and the readings are not being used-If you go to gearchatter they have tests there that can diagnose other problems with 02's such as grounding and base voltage that can be checked with the key ON and engine NOT running--
A Wideband 02 sensor however works from a 0-5 volt range
http://gearchatter.com/index10.php?s...077d3da1abf097
look here and search for 02 codes
A Wideband 02 sensor however works from a 0-5 volt range
http://gearchatter.com/index10.php?s...077d3da1abf097
look here and search for 02 codes
Last edited by tblu92; Nov 4, 2010 at 09:39 PM.
