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1993 Pontiac Grand Am HEATER WON'T BLOW OUT AIR, BUT THE BL

Tiny
GEARSHIFT
  • MEMBER
  • 1993 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 115,000 MILES
NO AIR COMES OUT OF THE VENTS, BUT THE BLOWER MOTOR IS WORKING. WE HAVE REMOVED THE DASH TO CHECK THE DAMPERS AND THEY ARE OPENING IN THERE. ARE THERE DAMPERS ANYWHERE ELSE? ALL THE VACUUM LINES SEEM TO BE OKAY. NEED HELP ITS GETTING COLD HERE IN THE MIDWEST.
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Friday, October 16th, 2009 AT 9:20 AM

9 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS


https://www.2carpros.com/forum/automotive_pictures/170934_grand_am_heater_1.jpg



You don't have defrost or anything?
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Friday, October 16th, 2009 AT 9:55 AM
Tiny
GEARSHIFT
  • MEMBER
  • 5 POSTS
NO NOTHING, YOU CAN FEEL THE WARMTH, BUT IT WON'T EVEN MOVE THE SMOKE FROM A CIGARETTE.
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Friday, October 16th, 2009 AT 11:35 AM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
I'd have to check the doors for directional flow. Did check for vacuum at the lines?
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Friday, October 16th, 2009 AT 12:39 PM
Tiny
GEARSHIFT
  • MEMBER
  • 5 POSTS
Yes have checked the vacuum lines & they are good. I was told about a filter that may be stopped up. I haven't found one. I'm getting ready to take the rest of the dash out so I can see in there better.
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Sunday, October 18th, 2009 AT 1:12 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Maybe I misunderstood your post? With the engine running, you can feel the vacuum, on the line?
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Sunday, October 18th, 2009 AT 1:24 PM
Tiny
GEARSHIFT
  • MEMBER
  • 5 POSTS
Yes
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Sunday, October 18th, 2009 AT 4:06 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS


https://www.2carpros.com/forum/automotive_pictures/170934_grand_am_1_1.jpg




https://www.2carpros.com/forum/automotive_pictures/170934_grand_am_2_1.jpg



I don't know if an exploded view will help or not?
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Monday, October 19th, 2009 AT 9:08 AM
Tiny
GEARSHIFT
  • MEMBER
  • 5 POSTS
My husband & I would like to THANK YOU very, very much. We finally found the problem. It was the evaporator core, it was completely stopped up. They blowed it out, hooked it back up & now there is all kinds of air coming out of the heater. If it wasn't for your diagrams they would still be looking. I guess that's why it just gradually got worse over the past couple of years. And the reason my A/C wasn't working either. Again THANK YOU!
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Tuesday, October 20th, 2009 AT 10:38 AM
Tiny
JDL
  • MECHANIC
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Hey, glad you got it going your way.
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Tuesday, October 20th, 2009 AT 11:04 AM

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