olds cutlass

1991 OLDSMOBILE CALAIS
150,000 MILES • 4 CYL • FWD • AUTOMATIC
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FFIGHTER542
  • MEMBER
  • 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
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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RASMATAZ
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 75,992 POSTS
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
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 18,828 POSTS
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
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  • 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