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Otto
05-16-2009, 06:48 PM
Upstream oxygen sensor circuit slow response driver's side...Anyone have any ideas what can cause this? I checked the wires, they're in good shape. As far as removing the the sensor goes, I'm a little shaky on getting under there with a torch right next to the fuel lines to remove it. Anything I should check first?

Explorin94
05-16-2009, 07:03 PM
No that pretty much tells ya the sensor is junk. You don't have to do the torch thing just yet. First start the truck up and let it get to running temp. Then see if you can get the sensor out then. Just be careful of the hot exhaust pipe when you do it.

Otto
05-16-2009, 07:08 PM
Cool how much to replace?

Explorin94
05-16-2009, 11:47 PM
Sensor is right around 100 bucks.