Question about 2002 Pontiac Grand Prix
Hello! This is a somewhat common issue where there is an excessive buildup of carbon in the EGR port in the upper intake manifold.
This is the EGR Valve as removed from the engine:
On your vehicle, you will notice that the flexible tubes are held in place by one bolt each. If you remove these tubes from the engine side only - you will be able to clean inside the port that they connect to. I have had good luck using a parts cleaner that any Chrysler dealership sells - it makes short work of carbon build up. Once you have the ports cleaned out - reassemble the EGR tubes to the intake. Be sure to get them seated fully before you tighten them back down.
Hope this helps and good luck!
Posted on Sep 25, 2009
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Posted on Jan 02, 2017
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