1997 RODEO BOIL-OVER AT IDLE.

  • Tiny
  • Kyle.D.Wheaton
  • 1997 Isuzu Rodeo
  • 178,000 miles

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.

Monday, March 26th, 2012 AT 1:37 AM

5 Answers

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,502 posts

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

Roy

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Monday, March 26th, 2012 AT 1:42 AM
  • Tiny
  • Kyle.D.Wheaton
  • Member

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

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Monday, March 26th, 2012 AT 2:33 AM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,502 posts

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

Roy

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Monday, March 26th, 2012 AT 2:35 AM
  • Tiny
  • Kyle.D.Wheaton
  • Member

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

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Monday, March 26th, 2012 AT 4:55 AM
  • Tiny
  • ASEMaster6371
  • Expert
  • 25,502 posts

Good luck

Roy

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Monday, March 26th, 2012 AT 5:08 AM

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