If your cataylst is glowing red from just normal driving it sounds like you have a fuel issue. Too much fuel will cause the cataylst to glow red because it is over working burning all the raw fuel.
Whether the fuel injectors, carburator (which ever you have) is allowing too much fuel to enter the combustion camber and disrupting the air/fuel mixture. This would cause a rough idle/running condition with the glowing cataylst.
The MAP sensor could be giving causing the rich condition or the oxygen sensor could be causing this also. These sensors could be giving inaccurate data causing the rich condition. Specialty tool are required to properly diagnose this driveability concern.
Is there a check engine light on?
Monday, March 3rd, 2014 AT 9:04 PM