Question about 2000 Pontiac Bonneville
Have your catalytic convertor checked
Posted on Jul 07, 2010
Faulty coolant system gaskets are allowing coolant into the block. You will notice a sticky sweet smell as it is running rough. You will need to replace all the gaskets (2 gaskets and one "elbow") from the coolant system to the engine. Not fixing this problem can cause a cracked head gasket. Check the area to the passenger side of the engine near the coolant tank, you will see a bolt on the block itself with an exposed nut. If this area is greasy, wet or otherwise corroded your system is leaking into the block.
Posted on Dec 13, 2010
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Posted on Jan 02, 2017
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