1998 Chevy Blazer lack of heat

Tiny
DBAST1
  • MEMBER
  • 1998 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 82,500 MILES
I have heat some times and others not at all. We have changed the thermostat and flushed the system twice. The radiator does not get very hot even though the gauge says 190, also the hose's do not get very hot. HELP
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Saturday, November 7th, 2009 AT 2:49 PM

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Tiny
RASMATAZ
  • MEMBER
Test the water pump:

One way to test for a bad water pump is to squeeze the upper radiator hose when the engine is hot and idling. Careful, because the hose will be HOT! If you do not feel much coolant circulating through the hose when you rev the engine, the pump may be bad. The other cause might be a bad thermostat that is not opening properly (remove and inspect the thermostat), or a clogged radiator.
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Saturday, November 7th, 2009 AT 6:41 PM

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