Question about 1995 Pontiac Grand Am

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Antifreeze leak Would a faulty water pump on a 1995 Pontiac Grand Am be the only reason that antifreeze would be pouring out of somewhere close to the firewall?? Aparently ther ewas a big puddle of antifreeze under the car when my husband got off of work lastnight.. He said that it appears that it is leaking from somewhere by the firewall.. Can you help??

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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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