Question Details

1999 Chevy Silverado 4.3 L catalytic converter glows red

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BMWadict  1 year 5 months ago

You have a bad spark plug wire, coil or spark plug. Fuel is making it to the catlatyic converter that's why it is glowing red.


Profile picture for user BMWadict

BMWadict  1 year 5 months ago

Is your car struggling to accelerate or has the check engine light on?