Login Register

How did you change your O2 sensor without a lift?

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

Post Reply
JimBee
Posts: 1803
Joined: 09 Dec 2008, 21:23
Year and Model: 93 and 2 96 850's
Location: Minneapolis
Has thanked: 13 times
Been thanked: 28 times

How did you change your O2 sensor without a lift?

Post by JimBee »

I have the new Bosch O2 sensor and of course need to remove the old one. Last time I tried this swap on another 850, couldn't budge it and had a shop do it. This time I'm determined. I'm planning to put heat on the sensor lug, but I want the best wrench ready when it gets up to temp.

So I bought a 7/8" 6 point deep impact socket, cut the leads off the existing sensor and the socket isn't deep enough to reach the nut. Not to be defeated, I'm trying to hacksaw about half of the sensor barrel off, but there seems to be a core rod or something that isn't scathed by my sawzall with 18 TPI blade. It goes through the outer tubing easily, but something in the core is very hard.

I realize there's a slit socket which I think is a great idea but in practice it can't hold the rotational force to grip the sensor nut tightly.
If I can reduce the sensor length, then with enough heat I'm pretty confident I can get it out.

How did you change yours? Any suggestions welcome!

User avatar
matthew1  
Site Admin
Posts: 12535
Joined: 14 Sep 2002, 11:03
Year and Model: 850 T5, 1997
Location: Denver, Colorado, US
Has thanked: 1441 times
Been thanked: 694 times

Post by matthew1 »

Hi Jim,

Slit socket -- but it wasn't rusted on/difficult to turn. My 850 was on front or side jackstands, I forget which.

Did you try a hacksaw on the sensor?
Help keep MVS on the web -> click sponsors' links here on MVS when you buy from them.
Also -> Amazon link
. Click that when you go to buy something on Amazon and MVS gets a kickback.

1997 850 T5, MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace [gone]
2004 V70 R [gone]

Image

User avatar
Sveedy
Posts: 1271
Joined: 11 Nov 2019, 16:52
Year and Model: 96 850 Turbo
Location: N. Arizona
Has thanked: 190 times
Been thanked: 207 times

Post by Sveedy »

12" pipe wrench. Then you have it for other things around the house.
Try to learn life's bad lessons vicariously through others.


1996 850 Turbo GLH ( Goes Like Hell )

454cid
Posts: 659
Joined: 06 Jan 2022, 19:57
Year and Model: 1996 850
Location: United States
Has thanked: 70 times
Been thanked: 50 times

Post by 454cid »

I think I used one of the shallow 02 sockets that's offset, but being a low mileage rust free car, it was not stuck. Routing the new wire and connecting it took longer.
1996 850
1999 S70 GLT

scot850  
Posts: 9504
Joined: 05 Apr 2010, 14:46
Year and Model: 2000 V70 R
Location: Calgary, Alberta, Canada
Has thanked: 248 times
Been thanked: 697 times

Post by scot850 »

If you have a split socket, you can always use a hose clamp around the body of it to prevent it opening up and slipping.

Neil.
2000 V70 R - still being an endless PITA
2006 XC70
2003 Toyota 4Runner V8 Limited
2015 Kia Sportage EX-L - Sold
1993 850 GLT -Sold
1998 V70 XC - Sold
1997 Volvo 850 SE NA - Went to niece in California - Sold
2000 V70 SE NA - Sold

User avatar
Goupil  
Posts: 303
Joined: 04 Feb 2019, 12:52
Year and Model: 98' V70 LPT
Location: Brittany
Has thanked: 15 times
Been thanked: 65 times

Post by Goupil »

Honestly if it's a turbo and it's really stuck, I feel like taking the whole downpipe out might be easier
1998 Volvo V70 B5254T M56
1993 Volvo 944 D24TIC M46 - SOLD
1994 Volvo 945 B230FT M90

User avatar
Chuck W
Posts: 938
Joined: 24 Dec 2014, 10:45
Year and Model: 97 854 T5
Location: Indianapolis, IN
Has thanked: 70 times
Been thanked: 187 times

Post by Chuck W »

scot850 wrote: 27 Nov 2022, 07:41 If you have a split socket, you can always use a hose clamp around the body of it to prevent it opening up and slipping.

Neil.

This is what I do.
'97 854 T5 - Manual Swap/M4.4/COP/NA cams/P2R Brakes/16T/ chassis bracing/ XC70 nose swap
'97 855 GLT - Hers. RN swap/16T/COP/VVT/exhaust/302s/Flashed M4.4/ chassis bracing/ 2 kid seats
'78 GLE - Waiting in the wings. Future whiteblock/T5 swap.

brunocerous
Posts: 418
Joined: 27 Oct 2015, 17:24
Year and Model: 1998 V70
Location: Maplewood, New Jersey
Has thanked: 153 times
Been thanked: 19 times

Post by brunocerous »

If I recall correctly, I had my two P80s on jack stands and couldn't get enough leverage to loosen the O2 sensors. I ended up wrapping a nylon strap (from a set of ratcheting straps) around the ratchet handle and pulling from the side of the car. It was a little tricky to find the right angle for the ratchet and keep the strap taut while I scooted out from under the car, but it worked for both cars. Hope that helps!
2004 XC90 AWD
2000 V70, base, MT, 'The Silver Bullet'
1998 V70, base, AT, 'Blue Steel'
1998 V70 T5, AT, project
1999 V70 XC AWD, AT (RIP)
1998 S70 T5, AT (RIP)

User avatar
abscate
MVS Moderator
Posts: 30009
Joined: 17 Feb 2013, 17:54
Year and Model: 99: V70s S70s,05 V70
Location: NYC, ALBANY NY
Has thanked: 870 times
Been thanked: 2411 times

Post by abscate »

Heat is your friend with these. Oxy mapp until they are cherry red and they screw out
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
Link to Maintenance record thread

Post Reply
  • Similar Topics
    Replies
    Views
    Last post