Clogged cat.............other than that....IDK
like he said a clogged cat, or you are running stupidly pig rich. either way, don't drive it more than absolutely necessary, that cat is a fire waiting to happen, and it will probably take your truck with it if not careful.
Where is it hot? The whole exhaust or just a section. More info would help, although it sounds like you have a clog somewhere. Why did it need a cat? Maybe there is another problem that took out the first cat (running rich).
Needed a CAT so the shop would work on it. I dont know if that was true or not but they put one on it. The CAT is running red nothing else.
Figured it out. Intake leak caused it to run super rich. All is good now
Good job!Figured it out. Intake leak caused it to run super rich. All is good now
Lean will make the engine hot, rich will make the exhaust hot
Needed a CAT so the shop would work on it. I dont know if that was true or not but they put one on it. The CAT is running red nothing else.
exhaust leak will cause air to get sucked in, making o2 sensor think the engine is running lean, resulting in the computer dumping fuel to balance it out. The excess fuel burns off in the exhaust, making it super hot
Figured it out. Intake leak caused it to run super rich. All is good now
Good job!
Back in the '90s, I used a company truck that the carburetor started dumping excessive fuel down the intake. I did not notice any problem until one night I saw an orange glow under the truck. That excess fuel was burning off in the muffler.