O2 replacement - 2002 Cavalier

05-23-2011, 12:28 PM
I have a 2002 Cavalier that has a bad 02 sensor(pre-cat) and it looked like a simple enough repair. However even with an 02 socket and 3/8 rachet there is not room to turn the darn thing. Will the metal coolant tube move out of the way id I unhook the rubber hose on the left and remove the bolt on it? I can't see what the metal tube connects to on the engine....not sure if it is another hose or a rigid type connector there.

05-24-2011, 10:34 PM
Sorry folks....this is a 2.2 vin 4.

05-26-2011, 08:04 PM
Are you talking about the metal coolant hose that goes from the rubber thermostat hose and around towards the firewall?

05-26-2011, 09:40 PM
Yes, that is it. The problem is while I can get a O2 socket on it and 3/8 drive ratchet, you can't turn it as there is no room. I was wondering if a 1/4" drive would fair better or if I needed to move the hose. Car is loaned out for a few days so I can't try either right now but appreciate any advise. Looked like I had no problems.....

05-27-2011, 07:38 PM
If you follow the metal hose around towards the firewall there is a stud mounted to the transmission that holds this line in place. You can you remove this nut (I thinks it's an 18mm).
If not try using a longer extension and come in closer to the battery side of the car.

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