Car Problem Reports

Isuzu Pickup Coolant Leak From Heater Core

Isuzu Pickup Problem
8 Reports
Me Too

Model Years Affected: 1990, 1991, 1992, 1993, 1994, 1995

Average Mileage: 115,000 mi (82,000 mi - 148,000 mi)


The heater core may leak coolant, excess coolant loss can result in engine overheating. Our technicians tell us a revised, copper heater is available to replace the original aluminum one.

  • Visitor, , 148,000 mi

    I am asking for my mechanic to test the core if it is something that is done without special equipment- then i can determine if that was the problem- I assume it is because the previous owner had installed a new radiator. I have not found out much in regard to how a test is done or where to find a copper heater core.

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  • Visitor, , 82,000 mi

    Coolant leak in heater core at 82000 miles.

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