I have a O2 sensor on my 1999 S80 2.9L that flat lined Bank 2 Position 1, Is this the sensor before the Cat or after the cat? Parts guy says it's after the cat and i say it's before the cat. Upstream or Downstream sensor??

Thanks

Vova585 wrote: 23 Aug 2025, 18:18 Than try old fashioned ways of brake bleeding with 2 people. Simple and works with this car.

That was my first try. That led me to removing the calipers and finding out the problem at hand. Ran to the auto parts store and grabbed the pressure bleeder.

That was my first try. That led me to removing the calipers and finding out the problem at hand. Ran to the auto parts store and grabbed the pressure bleeder.

I have the brake bleeder air tool that connects to the caliper bleeder screw. It's supposed to draw the fluid from the master cylinder through the system into the caliper and out the bleeder into the jug. Thats a no go.

Pulled both rear calipers off our 02 XC70 and there's no fluid coming out from the flex hose. I cracked the rear master cylinder line open and bleed a little fluid. The fluid was dirt brown in color. I pulled the pistons out of the caliper housings. Same thing fluid was dirty brown in color with ...

Same problem I’m having with the GM transmission. Install the same trans kit. Changed the filter and dumped in 2.5 gal of trans fluid. Better but not perfect only time will tell. Volvo knows they have a problem with these units and should recall them.
Hell got off the subject it’s a project R&R ...

Could be tough with those charge tubes running over the head. I see you had one of these T6 nightmares.

This is crazy…. My wife filled the tank up at Costco. Drove maybe 15 miles and out of the blue the check engine light started flashing engine started to misfire. I told her to get it home asap.
Ran my iCarsoft scanner and it spit out 3553, 3533 & 3503 I called Costco to check on the fuel step one ...

What was the out come?? Same codes going on with my S80 T6

Thanks

Replaced the steering U-Joint package a few years ago on a 01 V70 what a nightmare.