Replacing O2 - Driver side 97 LT1 - HELP
Thread Starter
TECH Enthusiast
Joined: Apr 2003
Posts: 561
Likes: 0
From: silver Spring MD
Replacing O2 - Driver side 97 LT1 - HELP Hi Folks
I need help - I am setting a P0420 code, hit the CATs with a Mallet – no move material, the CAT sounds OK. I replaced the back O2 sensor, was a pain but I did it. The upper O2 sensor will not move. I am using a O2 Socket with a 1” long wrench to turn it but no luck at all. I am applying enough force that I feel the socket is spreading apart but O2 sensor does not move. 97 Z-28 with 117K on it. Somebody that has done this before, any ideas on how to get the SOB out.
Thanks
Bill
PS: I want to replace the O2's first - if that does not fix it than the cat.
I need help - I am setting a P0420 code, hit the CATs with a Mallet – no move material, the CAT sounds OK. I replaced the back O2 sensor, was a pain but I did it. The upper O2 sensor will not move. I am using a O2 Socket with a 1” long wrench to turn it but no luck at all. I am applying enough force that I feel the socket is spreading apart but O2 sensor does not move. 97 Z-28 with 117K on it. Somebody that has done this before, any ideas on how to get the SOB out.
Thanks
Bill
PS: I want to replace the O2's first - if that does not fix it than the cat.
Thread Starter
TECH Enthusiast
Joined: Apr 2003
Posts: 561
Likes: 0
From: silver Spring MD
Hi Folks
I have been using Liquid Wrench but I need to try P-Blaster. It appears to be the choice of everybody here. I have never heard of it but live and learn.
Thanks
Bill
I have been using Liquid Wrench but I need to try P-Blaster. It appears to be the choice of everybody here. I have never heard of it but live and learn.
Thanks
Bill
I had to heat the pipe around the O2 sensor until it was loose. PB blaster had no effect, although I didn't leave it overnight, just an hour or so. If you heat it with a torch or something, just make sure you get it out fast before it starts to expand as well and gets stuck again, lol. Good luck.
yea those threads on the O2 sensors are probably the nastiest and hardest to get out, they corrode so much because of the heat and vapor that passes through, what I did was drop the Y, that made it much easier. I did it before with the Y on and I did it but it was a pain
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Originally Posted by Captainofiron
yea those threads on the O2 sensors are probably the nastiest and hardest to get out, they corrode so much because of the heat and vapor that passes through, what I did was drop the Y, that made it much easier. I did it before with the Y on and I did it but it was a pain
Removing the ypipe bolts is probably just as tuff lol
Thread Starter
TECH Enthusiast
Joined: Apr 2003
Posts: 561
Likes: 0
From: silver Spring MD
Hi Folks
I purchased P-Blaster and sprayed the O2 sensor. I waited a while and tried to remove it - the O2 socket was giving and spreading at the bottom.
THIS WORKED: I cut the 4 wires off the O2 sensor and used a deep 7/8 socket with a 18 breaker bar - there is room. That O2 sensor came right out, not a problem. The breaker bar gave the leverage I needed and with the help of P-blaster. Most cases the O2 is bad anyway, so cutting wires isn't going to hurt.
Thanks for the help - I drove the car and I am not setting the P0420 anymore, replace both drivers’ side O2s. But I wait to see what happens over the next week.
Bill
I purchased P-Blaster and sprayed the O2 sensor. I waited a while and tried to remove it - the O2 socket was giving and spreading at the bottom.
THIS WORKED: I cut the 4 wires off the O2 sensor and used a deep 7/8 socket with a 18 breaker bar - there is room. That O2 sensor came right out, not a problem. The breaker bar gave the leverage I needed and with the help of P-blaster. Most cases the O2 is bad anyway, so cutting wires isn't going to hurt.
Thanks for the help - I drove the car and I am not setting the P0420 anymore, replace both drivers’ side O2s. But I wait to see what happens over the next week.
Bill
Thread Starter
TECH Enthusiast
Joined: Apr 2003
Posts: 561
Likes: 0
From: silver Spring MD
Originally Posted by carzman5678
Did you put any hi-temp anti-sieze on the threads of the new O2 sensor?
Bill
