What's wrong when the check engine light is blinking?
Jan 7, 2013 at 5:39 AM
1999 Pontiac Bonneville S Wrong Check Engine Light Blinking
1999 PONTIAC BONNEVILLE
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When that light turns on there is a diagnostic fault code stored in the Engine Computer. That code will indicate the circuit or system that needs further diagnosis.
The level of severity can be determined by how that lights acts. Flashing is the most severe and rare. It means too much raw unburned fuel is going into the exhaust system and is going to overheat and damage the catalytic converter. That's an expensive repair and you are supposed to stop the engine right away.
The level of severity can be determined by how that lights acts. Flashing is the most severe and rare. It means too much raw unburned fuel is going into the exhaust system and is going to overheat and damage the catalytic converter. That's an expensive repair and you are supposed to stop the engine right away.
Jan 7, 2013 at 6:57 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.