im in california and i recently failed the smog test. i called up a mechanic from craigslist and he told me that it is the CAT. Well I was wondering if he is correct. I recently replaced the O2 sensor. Is a CAT difficult to install?
CAT is catalytic convertor. no, it's not difficult at all. there are four 10mm(i think) bolts holding the heatshield on from above, and four 14mm bolts holding the cat to the exhaust piping. simply unscrew and remove. you may want to get new gaskets on both sides if the old ones are worn
edit: if you really don't know much at ALL about cars, and I suspect you don't, the catalytic convertor is right smack under the middle of your car. use a creeper unless you like dirty shirt backs.
hahaha, I love it when someone says "simply unscrew and remove"
because you know thats how it always works specially when you're talking about exhaust parts on a 20 year old car!! yeah "simply unscrew and remove" that will happen!!
Unscrew and remove my a$s!!!!! I used some of the aformentioned tools above (excepet for C4) and cussed a whole lot and nothing worked.
Finally I used an angle grinder with two different length blades. Sucker cut the bolts right off in ten minutes! Wonderful little investment.....$20. Pick one up at Sears if you ever see one, they are a timesaver for sure!
Don't remind me! First I tried vise grip pliers, nothing. Torque wrench, nada. Used a special set of sockets that I had for stripped bolts, nope!
Pulled out the heavy artillery with the bolt cutters, a monkey wrench, and that wonderful torch till it was cherry red...........zilch! Finally borrowed that $20 little angle grinder from my Dad that we used to cut sheets of metal for hurricane shutters a couple of years back. Cut those bolts off like a knife through butter!
Went out and bought one right afterwards!!!!!! I wish I would've thought of C4 but then again, maybe propane could've worked just as good!!!! ;-)