BOIL-OVER AT IDLE.

1997 Isuzu Rodeo

Tiny

Kyle.D.Wheaton

March, 26, 2012 AT 1:37 AM

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.

5 Answers

Tiny

ASEMaster6371

March, 26, 2012 AT 1:42 AM

I would check the thermostat. The radiator may be clogged as well. The last thing I would look at is the water pump.

Roy

Tiny

Kyle.D.Wheaton

March, 26, 2012 AT 2:33 AM

If the thermostat is bad, wouldn't that cause overheating while driving as well? (Confused now.)

Tiny

ASEMaster6371

March, 26, 2012 AT 2:35 AM

It could be not open enough to allow circulation at idle.

Roy

Tiny

Kyle.D.Wheaton

March, 26, 2012 AT 4:55 AM

Ah, gotcha! I'll check that out. Thank you very much.

Tiny

ASEMaster6371

March, 26, 2012 AT 5:08 AM

Good luck

Roy

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