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Old 12-02-2008, 01:58 PM   #11 (permalink)
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Quote:
Originally Posted by getnpsi View Post
o2 sensor is really stuck in the manifold. i have an o2 sensor socket but its a cheapo brand and really starts to bend when i apply a lot of force.
Spray it with PB Blaster or Aero Kroyl. (WD-40 is not a penetrating oil and is all but useless for loosening stuck bolts IMHO.) Slip the wires through a six-point box-end side of a combo wrench and get that on the sensor body. Get a looooong combo or box-end wrench and hook the box end onto the open end of the first wrench. Push with one hand, use the other to tap the first wrench with a heavy hammer. The sensor will let go...

-soD

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Old 12-03-2008, 01:49 AM   #12 (permalink)
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Quote:
o2 sensor is really stuck in the manifold.
Also O2 sensor is simpler to remove when hot. Wear some leather gloves and protective sleeves tho.
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Old 12-03-2008, 03:31 PM   #13 (permalink)
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if it were only that easy. On this car, its very difficult to get any leverage with the box end, without taking out the radiator. I have an extra exhaust manifold i could install...but again the PITA factor of radiator removal. The hoses are old LoL. Me and my 700 dollar cars. ill shoot it with pb and let it sit overnight. Last time i only let it sit an hour or two because i work in the late afternoon.
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Old 12-03-2008, 04:59 PM   #14 (permalink)
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Can you get a bigger box wrench on the end of the other to add length? Put the open end through a bigger box and link them together If there's room. Give the base of the o2 a good few whacks with a hammer and chisel or something long and steel. Also try to heat the o2 with a propane torch and get it good and hot then let it cool off. This crushes the rust in the thread.

That's all my tricks.
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Old 12-04-2008, 02:56 PM   #15 (permalink)
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Well ive rounded the outside kinda bad using the stupid kragen autoparts socket. The regular 22 box end wrench holds fine still, but just not enough leverage. Theres really no range of motion to strike it that soundly. I tried the end of the floorjack for both leverage and as a pipe to hit with and things just slip around. I can get it off if the manifold was off the car...cut the o2 wire, hammer the wrong size impact on there and zap zap she's off...bu't cant do that to my daily driver. Dissasembly with care vs junkyard dogging are two different animals.

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