|Ad-hoc parking lot garage setup.|
The jack setup in the picture above is rated at 9 tons (safety factor of about 6!). Anyways, the cat is split from the pipe that once connected it to the muffler, so the first step was to remove the section that was severed and not perturb the muffler pipe. The interface is this rusty two-piece bracket, which as far as I could tell was kept together by the remnants of some kind of pin. I pried the bracket apart using a flat head screw driver and some pliers. I honestly believe this is the procedure Volvo intended because if you're changing the cat then it follows that your hardware is ~15 years old.
Removing the brackets revealed the rusty pipe interface. I was a little concerned that this connection was welded at first. However, after blasting it with penetrating oil and torquing the free pipe with adjustable wrenches in opposite directions, it twisted right off.
|Enter, the stubborn oxygen sensor.|
|The silver washing machine hose like thing is the air distribution hose.|
|Oxygen sensor connectors.|
Once I finally detethered the pipe/sensor assembly the sensor came right out with the help of a vice and a big wrench with a pipe to make it even bigger.
|A more sensible strategy.|
D.E.C. catalytic converter - $396.55 (FREE SHIPPING!)
+ Exhaust flange gasket - $3.95
+ Oxygen Sensor Socket - $17.00
($2000 - 416.50 = 1583.50)
In the green for now at least. You can borrow oxygen sensor sockets from Autozone free but I figured this was an investment for future brick chronicles and car repair projects. Until next time.