Question about 1995 Pontiac Grand Am
DO NOT DRIVE THE CAR until this problem is fixed! You could destroy the engine.
Many GM V6 engines of 1995-1999 had defective Upper Intake Manifold (UIM) gaskets (this is especially true for 3800 V6 engines). The antifreeze/coolant (especially orange DEX-Cool) will deteriorate the gasket material over time. If there are abnormal exhaust noises accompanying the leak, and/or the oil appears cloudy (check this immediately), you may have a blown head gasket or Lower Intake Manifold (LIM) gasket. Start with the UIM gasket.
The repair is detailed in the Haynes manual for that car ($17 at NAPA and Carquest), and (DIY) will take 5-8 hours plus a new gasket and RTV sealant (parts should be under $40 for all). A shop will charge $250-350 for this job.
Posted on Oct 08, 2008
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Posted on Jan 02, 2017
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