O2 sensors draining battery?
Thread Starter
Teching In
Joined: Feb 2013
Posts: 20
Likes: 0
O2 sensors draining battery? I have something draining my battery when I don't drive my jeep for a couple of days. I found a slot in my fuse holder that reads 3.2 ohms to ground. I traced it to my pink wire that feeds O2 sensor voltage. I unplugged both sensors and Continuity is lost. So the wire feeding sensors is good. My question is, is this normal? Did I mix up something in my 5.3 swap? These are the 4 wire flat black sensors.
TECH Resident
Joined: Jun 2009
Posts: 856
Likes: 2
From: Elizabeth City NC
Don't know if it sounds right, but checking for a drain by checking resistance isn't going to find you anything but continuity.
Set your meter to millivolt (MV) and disconnect the positive cable between the vehicle and battery. Check the battery to cable for how many MV is present. Then one by one start pulling fuses until you see .01 or less. Then you should find your parasitic drain.
Set your meter to millivolt (MV) and disconnect the positive cable between the vehicle and battery. Check the battery to cable for how many MV is present. Then one by one start pulling fuses until you see .01 or less. Then you should find your parasitic drain.
TECH Regular
Joined: Sep 2007
Posts: 443
Likes: 3
From: Kansas City, MO
Don't know if it sounds right, but checking for a drain by checking resistance isn't going to find you anything but continuity.
Set your meter to millivolt (MV) and disconnect the positive cable between the vehicle and battery. Check the battery to cable for how many MV is present. Then one by one start pulling fuses until you see .01 or less. Then you should find your parasitic drain.
Set your meter to millivolt (MV) and disconnect the positive cable between the vehicle and battery. Check the battery to cable for how many MV is present. Then one by one start pulling fuses until you see .01 or less. Then you should find your parasitic drain.
