Coolant leak under alternator


Asked by Apr 19, 2015 at 07:21 PM about the 2002 Chevrolet Monte Carlo LS

Question type: Maintenance & Repair

Thermostat stuck so no heat which took out intake manifold gasket, all that is fine now
and all gaskets are changed with thermostat but it leaks coolant under the alternator, now
it appears to be coming out of the front cover.  Is this part under pressure from coolant
after running, nothing leaking out of heads or intake gaskets and only leaks after warm,
temp gauge is normal the whole time.

1 Answer


If you have the 3.8 (3800 Series II) engine it's most likely the plastic elbows that go to the tensioner assembly. Coolant flows out of the engine through the serpentine belt tensioner on it's way to the heater core. Replace them with the metal elbows. HTH. -Jim

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