Replacing o2 sensors?

Post by **pkc303** » 20 Apr 2011, 22:45

This forum has plenty of diagrams. Try following each hose, paying particular attention to the elbows. They tend to rot out more often. If the hose crumbles, or leaves a nasty deposit in you hand, replace it.

Post by **jblackburn** » 21 Apr 2011, 06:54

Here's your first suspect - this is on the left side of the intake manifold between the PS pump and alternator.

Aside from that, look at anything going to the turbo, vacuum tree or intake manifold by the throttle body. You will have to remove the triangle-shaped piece of black plastic.

There really aren't too many vacuum lines; just check them all over like pkc said. There should be a diagram on your hood.

Post by **vjaneczko** » 21 Apr 2011, 07:53

For anyone interested, Stylin' Motors is back in business and selling silicone hose kits for the Volvos - mine shoulud be arriving on the 26th!

http://www.stylinmotors.com/volvo.html

MatDesign84 · Post by **MatDesign84** » 21 Apr 2011, 10:25

Has anyone tried the seafoam brand penetrate? It is non flammable and they claim it works even better after heating something up because it wont just burn off. I might get that instead of PB blaster when I get around to doing mine.

Chuck21387 · Post by **Chuck21387** » 22 Feb 2012, 08:53

MatDesign84 wrote:Has anyone tried the seafoam brand penetrate? It is non flammable and they claim it works even better after heating something up because it wont just burn off. I might get that instead of PB blaster when I get around to doing mine.

I swear by sea foam penetrating oil....it's amazing....

Post by **rmmagow** » 22 Feb 2012, 10:51

I used the Seafoam to help get a balljoint part off my Subaru. It worked very well I guess but I might have gotten lucky. PB always worked for me too.

MatDesign84 · Post by **MatDesign84** » 03 Mar 2012, 18:10

Thanks for the responses on this old thread, I dont have that car any more but im giong to get some of this stuff when I see it in the store. Auto Zone or Advanced auto parts do not seem to carry it.

Post by **abscate** » 18 Mar 2013, 09:57

OLd thread alert, but this seemed to be the best thread after Search for O2 sensor replacement...

I have 140k on my 1999 V70 T5 - I have seen advice to replace at 100k, and other advice that if you arent throwing codes then dont replace.

My mileage is down, so Im leaning towards replacement, in which case I will try jblackburns progression of methods above..

Keywords O2 sensor replacement oxygen O2 wrench crow foot

v70xclace · Post by **v70xclace** » 26 Mar 2013, 08:39

I realize this post is a little dated but, maybe my experience can help someone else... I make no promises but this is my story... My 99 v70 xc 's engine light came on the other day. I went straight to AutoZone to have the code read and they said either the front o2 sensor or the catalitic converter. I read on here that someone fixed theirs by creating a lean mix by removing a vaccuum hose for a few minutes. The lean mix burned hot and burned off the buildup on the o2; engine light went off. Rather then messing with hoses I decided I'd try running some high octane fuel. I filled my tank with premium feul and added an octain booster/cleaner. 40 miles later the engine light went off and no problems since. That $10 bottle of octane booster saved me (potentially) hundreds of dollars!

eulogiosifuen · Post by **eulogiosifuen** » 13 Dec 2015, 08:57

I have a 08 s40 and trying to replace o2 sensor. I bought the special socket 22 mm and it was too big I read after taking it back that that is the size to use could I have a smaller size or is the 22 mm socket the only one used for this model.
Please help

Replacing o2 sensors?

Re: Replacing o2 sensors?