You really want to see higher voltage on the O2's that are downstream of the catalytic converters as this shows that the excess fuel is being burned off and there is less oxygen. They shouldn't show over 0.1V as that would mean they are shorted to voltage somewhere.
I would replace the upstream sensor(between engine and catalytic) on the passenger side as the heater circuit code is a definite sign of a bad O2 sensor- they have slow reaction times when they are cold. The wiring for the downstream sensor on passenger side needs to be looked at as the wires...
I would expect an O2 sensor with a fault to be ignored and the fuel system to run in open loop. My 2006 was throwing the drivers side cat code not long after I bought it, the cat isn't clogged but it isn't doing anything as the pre cat and post cat O2s have similar voltage readings. I have 200...
Good experience for him. The drivers side rear on mine was easy, the passenger side fought me even after turning back the auto adjusters for the parking brake on the 2006
I bought a Dorman 938124 from rock auto, it wasn't the cheapest but it wasn't as much as local parts stores wanted. When putting a good one in, just place the rear of the driveshaft close to the transfer case, there is room on one side or the other, then put the front in first and get some...
They run fine without the front driveshaft, I had mine out for a week or so as I wanted to replace my starter and then noticed the rear cv was shot. It was easy ordering the right length as the old one still had the part number on the sticker- that had to defy some odds
Depending on how many miles, it might be time to replace belt and the belt tensioner. I got lucky when my belt tensioner bearing went out and was only a block away from an auto parts store
When you put the driveshaft back in, it is easier if you get the end close the the transfer case near the transfer case and put the front in first. I bought a new front driveshaft for my 2006 and I struggled until I focused on getting the front in first
There was only one upper control arm for my 2006 KJ and it fit either side, I did a parts lookup on a 2011 and it showed 2 part numbers, so a right and left side
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