My catalytic converter was glowing red causing it to shake violently due to the rough idling of the engine. I had the converter replaced but to no prevail, the same problems ensued, if not got worse.
Glowing converter is a symptom, not a problem, you need to find out what is causing the fuel dump into the converter, bad valves, incorrect timing, fuel delivery or just a worn out engine, get the codes then at least you will have someplace to start.
Its carbuerared so there are no codes. I was going to try the timing, but wanted to be sure it wasnt the coverter the cause plus i figured that would do the trick.
You can always punch the guys out of the converter... That's what I use to do on older cars... It's just emission, don't du if you live in one of those emissions states... And yes tennis shoes I know its not the correct way to do it but it is a wayXD
start with a tune up plugs wires cap rotor air filter and fuel filter
check 02 sensor and make sure it is wired correctly.
I agree with tennisshoes, your getting unburnt fuel into the convertors causing them to glow. You need to find out why.
Do you have this? might check the lines.
Looking for a Used Mustang in your area?
CarGurus has 45,670 nationwide Mustang listings starting at $2,000.
Search Ford Mustang Questions
Ford Mustang Experts