1998 Pontiac Sunfire no heat

1998 PONTIAC SUNFIRE
170,000 MILES • 4 CYL • 2WD • AUTOMATIC
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WISHMASTER27
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  • 3 POSTS
my car has heat when i'm doing 35 and under but any thing over that i have no heat . what would make that happen
Dec 9, 2009 at 8:34 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check the coolant level and replace the thermostat and see what happens, also check the heater core
Dec 9, 2009 at 8:47 PM
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WISHMASTER27
  • MEMBER
  • 3 POSTS
i replace the thermostat and coolant level is good how do i know if it heart core
Dec 9, 2009 at 8:51 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Both hoses should be equally hot -not warm on one and hot on the other.
Dec 9, 2009 at 8:58 PM
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WISHMASTER27
  • MEMBER
  • 3 POSTS
ok where do i find the heater core at on that car 1998 sunfire
Dec 9, 2009 at 9:04 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
The heater core is where the heater hoses is connected to.
Dec 9, 2009 at 10:23 PM
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