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Old 04-26-2013, 12:29 AM   #1
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Passenger side O2 sensor removal problem

Hey guys, I haven't been around for a while but I'm attempting to remove the passenger side O2 sensor but failing. I've been soaking it in PB Blaster and tried getting at it from under the car with both an O2 socket and an open end wrench. The sensor seems like it's so close to the flange on the manifold that the socket wont fit all the way over it. It just barely grabs and the open end wrench ended up just rounding part of it off. I'm getting more and more frustrated and was wondering if any LT1 guys had found away around this issue.
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Old 04-26-2013, 01:15 AM   #2
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Wow, so many old members coming out of the wood work today. Where have you been man? Been awhile!

Man to be honest, so many of those sensors are so tight in the bung that it's not uncommon for the manifold to have to be removed. Not too sure how much better luck you would have if you could manage to get the O2 socket on there considering the age of the car and my assumption that it's the original O2 sensor. When I took them out of my old manifolds back in 2010 a neighbor and I ended up using his massive vice to hold the manifold in place while we used a breaker bar to loosen the old sensor.
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Old 04-26-2013, 01:23 AM   #3
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Quote:
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When I took them out of my old manifolds back in 2010 a neighbor and I ended up using his massive vice to hold the manifold in place while we used a breaker bar to loosen the old sensor.
When I went to LTs from my stock manifolds I had to do the same thing, I also used the blue wrench with a rosebud tip for some assistance.
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Old 04-26-2013, 06:03 AM   #4
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When i did my lts i couldnt get it out it just bought new ones
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Old 04-26-2013, 08:25 AM   #5
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That O2 socket should fit,I have one but sometimes if you don't have the wires pulled tight it won't fit all the way. Soak it and heat it up with a torch.

Stock exhaust? If so maybe its time for some headers.
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Old 04-26-2013, 10:10 AM   #6
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Damn... I was afraid that's what I was going to hear. It's the original O2. I'd love to redo the whole exhaust with some LTs but not exactly in the budget right now. On top of school and bills I just finished my motorcycle project. I guess I'll just have to start putting some cash aside and deal with it till I can afford an exhaust. It rarely acts up (like only every couple months) but I figured I may as well replace it. Thanks guys.

Sniper: Ya it has been a while. Been keeping busy with school/work and didn't have the car at school till a couple weeks ago. I'll be driving it on the off days that I'm not riding this summer/fall and I'll be poking around here more often as well.
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Old 04-26-2013, 12:49 PM   #7
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I used a breaker bar to pop mine loose. It was still a bitch. If you're trying to get at it with them still on the car, try jacking up the car as high as possible (assuming you don't have a lift) to get additional leverage; every little bit helps.

I have a 4 foot length of piping with a big enough opening to fit over the end of my wrenches to give even more leverage if needed. Cost me a few bucks at the hardware store and it has proved invaluable many times.
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Old 04-26-2013, 01:49 PM   #8
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When I was putting my headers on I tried to get the original O2 sensors out of my manifolds. We had it in a vice and were soaking in PB blaster to no avail. They just wouldn't come off, even when trying to use a breaker bar.
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Old 04-15-2014, 10:47 AM   #9
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Hey guys. I'm a new member and having the same problem. It took me hrs to remove the passenger side manifold yesterday and busted my 3/8 craftsman ratchet trying to remove the sensor. Been dousing it with wd-40 since last evening. Going to try again today. What a pain, wish I had it in the budget for new headers. Wish me luck
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Old 04-15-2014, 11:20 AM   #10
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Try using PB Blaster or Liquid Wrench instead of WD-40, they are much better at penetrating corrosion and might just be what you need. It's worth the couple bucks to have a can of those on your workbench "bag of tricks".
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Old 04-15-2014, 12:41 PM   #11
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And craftsman are lifetime tools i believe. Take it back where you got it and see if they warrany it.
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Old 04-16-2014, 04:10 PM   #12
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I'm hoping they will. Thanks
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Old 04-16-2014, 04:16 PM   #13
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Any luck on that sensor? I removed the manifold and I'm still fighting it. Good luck
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Old 04-18-2014, 09:52 AM   #14
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Any luck on that sensor? I removed the manifold and I'm still fighting it. Good luck
Try using this stuff called Freeze Off. Autozone/Pep Boys sells it. Be sure to read the directions. CRC/Freeze-Off super penetrant (05002) | | AutoZone.com
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Old 06-25-2014, 12:09 AM   #15
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So to update this I may have solved the problem. Scored a set of Pacesetter Longtubes in good condition at a price I couldn't pass up, and a decent price on a cat back so I'm in the process of exhaust replacement. The entire stock exhaust is off and I only broke off one manifold bolt. Proceeded to break off an extractor in it because I'm an idiot. A lot of drilling and cussing later I'm trying to get the headers in. Passenger side is almost in. Gonna have to disconnect and tilt the engine a bit tomorrow. Oh, and screw the stock plug wire routing. Holy shit that's a pain, even just to remove them. Still don't have the passenger side wires off, Might end up pulling the power steering pump.
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Old 06-27-2014, 02:27 PM   #16
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Over a year later?
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Old 06-29-2014, 08:09 PM   #17
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Yup lol. I've been pretty slow at acquiring the parts. It ended up paying off though. Plus I finally have some time and a place to work on it.
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