1997 Rodeo boil-over at idle.

1997 ISUZU RODEO
178,000 MILES
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KYLE.D.WHEATON
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I have a 1997 Isuzu Rodeo, 3.2l, auto, 4x4, a/c non-functional. It has been boiling over at idle for the past several days, but runs fine at driving speeds. Pump fan is good, electric fan cycles on start-up, but, as the a/c doesn't work, that's the only time it runs. Could my pump impeller have quit working? It doesn't look like coolant is circulating.
Mar 26, 2012 at 1:37 AM
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ASEMASTER6371
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i would check the thermostat. the radiator may be clogged as well. the last thing i would look at is the water pump.

Roy
Mar 26, 2012 at 1:42 AM
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KYLE.D.WHEATON
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If the thermostat is bad, wouldn't that cause overheating while driving as well? (Confused now...)
Mar 26, 2012 at 2:33 AM
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ASEMASTER6371
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it could be not open enough to allow circulation at idle.

Roy
Mar 26, 2012 at 2:35 AM
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KYLE.D.WHEATON
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Ah, gotcha! I'll check that out. Thank you very much.
Mar 26, 2012 at 4:55 AM
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ASEMASTER6371
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good luck

Roy
Mar 26, 2012 at 5:08 AM
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