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Pontiac Montana Leaking Water Pump May Cause Coolant Loss and Overheating

 
Pontiac Montana Problem
16 Reports
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Model Years Affected: 1999, 2000, 2001, 2002, 2003, 2004, 2005

Engine Affected: 3.4L V6

Average Mileage: 133,285 mi (96,000 mi - 230,000 mi)

Verified

A coolant leak may develop from the water pump. The engine may overheat as a result of the coolant loss. A leaking water pump should be replaced.

  • Visitor, , 3.4L V6

    I am loosing water out of the resivor about every 2 days.The temp gauge keeps reading hot

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  • poptopp, , 3.4L V6, 97,000 mi
     Rookie

    Coolant leak at left front under radiator cap. Found leak at radiator core tank seam. Replaced radiator core.

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  • Visitor, , 96,000 mi

    temp gauge topped out into the red zone when at an idle. thought it was a relay or bad fan. shop trouble shot to a leaking water pump and replaced the water pump and did a coolant system pressure test, flush and fill. Two days after I got it back, it showed signs of coolant leakage (it has never had any leaks in the past) and now the radiator is wet at both corners and coolant is dripping.

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  • Visitor, , 3.4L V6, 100,000 mi

    Same thing

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