I tried to unbolt the catalytic converter off my 2000 SE (70k miles) but the bolt and nut seemed to be fused by a caking of rust. I tried to tap as much off as possible before getting a wrench on it but seems to strip the bolt a bit. Are my options now to use air tools or take a sawsall to the bolts? I'm installing a new short throw shifter.

 

use some wd-40 and let it sit for about 5-10 mintues then go at it again.

 

i've recently tried to do the same thing, but couldn't get the bolts loose. even tried the wd-40 thing and still nothing. I just ended up taking the car to an auto shop and paid them a few bucks to loosen the bolts for me then drove it back home ( very short drive) then did the rest myself.

 

Try a rubber mallet to the wrench. That can help a lot.

 

Go to an autostore and buy some liquid wrench called PB... I think that's the stuff. I just went in and asked for your strongest liquid wrench and autozone and pep boys suggested it to me. Worked for me.

 

It's called PB Blaster. The stuff works great. Just spray a good amount on and let it set for a couple of hours or overnight if you have the time. It's never let me down.

 

Yep That's the stuff. Works great!!!!

 

Thanks to all who posted. I called my local Mineke muffler shop and said that it is illegal to remove or assist in the removal of a catalytic converter..... blah, blah, blah. Anyway, I'm gonna go to the local mechanic shop and see what they say. Also I have a Pep Boys near me and will get a can of that PB blaster stuff. This cat's gonna come off one way or another!!!