i put new exhuast on 90 pickup now cat is glowing its not clogged i can see the sky right thru the cat any answers

 

unburned fuel causes the converter to glow red. since you just did the exhaust, check into your o2sensor and make 100% sure it's still hooked up.

 

dang, i was expecting to see a mutant cat of some sort...

 

 

Whats with that pic? All I see is 2 green eyes

 

that's as close to a glowing mutant cat as I can get. And everyone here knows I have a thing for big eyes.

 

 

Sorry couldn't resist...

 

this guy must think we are a bunch of ....... by now. lol.

 

hahahahaha. that's better.

 

 

great pics thanks guys lmao seeems to run great keep ya posted

 

I wouldn't be driving a vehicle in which the cat is glowing. Your gonna warp the head or the block or worse.

 

Did you mess with anything else? Cat clogged? Change the timing at all?

 

When was the last time plugs, wires, cap, rotor were changed? As others have mentioned the most likely cause is unburned fuel. You don't really want to keep driving it till you figure it out or you stand a high chance of melting the internals of the convertor, resulting in a clogged convertor.

 

you're running wicked rich if the cats glowing. You keep driving rich and the cat will melt and clog and you're gonna be replacing it again.

 

changed plugs fixed timing was off wasnt glowing today

 

How did the timing get off?

 

My Cat

 

Way to go Chris, ^5