how do i check for a bad oxygen sensor?
TGO Supporter
Joined: Aug 1999
Posts: 14,811
Likes: 1
From: Jackson County
check out put with a DVM, i beleive if there is any out put it would be good, but since it varies i don't think you'll find a set value that is makes it good, or bad. check your manual for readings i may have it wrong.
Supreme Member
Joined: Apr 2002
Posts: 1,353
Likes: 3
From: Austin
Car: 82 Z-28
Engine: 383 TPI
Transmission: 700R4
They should be putting out .1 to .9 volts with eng running.
If the sensor is out of the car, you can blow propane across the tip and read a voltage increase. That tells you if it's completely dead or not. Doesn't tell you much more.
They can be operable but sluggish.
IMHO; If your concerned and/or know it hasn't been replaced in 20-30K miles, replace it. They're like $20-30.
If the sensor is out of the car, you can blow propane across the tip and read a voltage increase. That tells you if it's completely dead or not. Doesn't tell you much more.
They can be operable but sluggish.
IMHO; If your concerned and/or know it hasn't been replaced in 20-30K miles, replace it. They're like $20-30.
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