What makes a catalytic converter to get cherry red after the car warms up?

Asked by Aug 23, 2014 at 10:05 PM about the 1996 Pontiac Grand Am 2 Dr GT Coupe

Question type: Maintenance & Repair

After the car warms up the catalytic converter gets red.

6 Answers


Something wrong with the Emissions system, get it checked quickly or you will be paying for catalysts also.


Catalytic converter is plugging up

1 of 1 people found this helpful.

Dumping excess fuel,o2,s may be bad causing this.

1 of 1 people found this helpful.

Rich fuel mixture.

It was one of the coil packs was bad, two of the plugs weren't firing & it was just dumping raw gas into the exhaust.


You should have been able to feel that, a loss of 2 cylinders would have been a big loss of power.

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