Is there anything I can try to put in my gas tank to unclog the catalytic converter! Don't have the money to afford a catalytic converter! It's 2013 Nissan Altima!
Any suggestions? really appreciate it!
No, it's not humpty dumpty. There is nothing that will put the pieces back together and unclog and catalytic converter except removing it.
Why do you think yours is clogged?
I agree with @imperator. Are you experiencing acceleration problems, and is the car's computer tripping codes related to the catalytic converter? If you aren't experiencing acceleration problems, the catalytic converter likely isn't clogged. How to Tell if You Need a New Catalytic Converter in Your Car (youtube.com) Try this.
Try pouring some lacquer thinner or some cat cleaner in the gas tank and then drive it around at least 150 miles or so. If that doesn't work, then it's best to replace it. Those cats are weak and what sucks that Nissan has never recalled them and I don't know why they didn't.
lacquer thinner cannot reassemble a catalytic converter and unclog it.