olds cutlass

1991 OLDSMOBILE CALAIS
150,000 MILES • 4 CYL • FWD • AUTOMATIC
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FFIGHTER542
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  • 2 POSTS
have a 91 olds cutlass calais and cant get any heat out of it changed thermostat and pulled heater core and water from kitchen faucet flows thru so i am stumped dont see any shut offs in either hose
Dec 11, 2010 at 8:58 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Check the air blend door if its in the heat position-start here
Dec 11, 2010 at 9:03 PM
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DOCFIXIT
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  • 18,828 POSTS
  • ASE Certified Mechanic
Problem is with blend door not closing isolating core for heat. Maybe faulty vacuum servo
Dec 11, 2010 at 9:05 PM
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FFIGHTER542
  • MEMBER
  • 2 POSTS
the door is fine opens and closes as i move the slide bar on heater control
Dec 11, 2010 at 9:17 PM
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