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AC/heater vents will not change from defrost to the floor vents or the straight vents

Tiny
UHSNOEBIRD
  • MEMBER
  • 1991 JEEP COMANCHE
  • 2.5L
  • 4 CYL
  • 100,000 MILES
The vents will not change from defrost to the floor vents or the straight vents that will blow in your face. Do the interior air vents work off vacuum hoses or cables. What is causing my problem?
Sunday, August 18th, 2019 AT 4:40 AM

9 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning,

Okay, I attached a vacuum diagram.

The controls are all vacuum. Electronic motors did not start for many years later.

Roy
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Sunday, August 18th, 2019 AT 5:02 AM
Tiny
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  • 342 POSTS
Thanks a whole bunch, I'm trying to help a friend out with his truck.
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Sunday, August 18th, 2019 AT 2:14 PM
Tiny
ASEMASTER6371
  • MECHANIC
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You are welcome.

Always glad to help.

Roy
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Sunday, August 18th, 2019 AT 2:21 PM
Tiny
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  • 342 POSTS
I'll let you know the outcome.
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Sunday, August 18th, 2019 AT 2:31 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Sounds good.

Roy
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+1
Sunday, August 18th, 2019 AT 2:37 PM
Tiny
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  • MEMBER
  • 342 POSTS
My friend got it fixed with the information you gave plus a video from YouTube did the job. Thanks again Roy. Are you a retired mechanic?
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Sunday, August 18th, 2019 AT 7:05 PM
Tiny
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  • MECHANIC
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Yes. 50 years in the field.

Roy
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Sunday, August 18th, 2019 AT 8:43 PM
Tiny
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  • MEMBER
  • 342 POSTS
Sometimes I guess that felt like 50 too many years.
Would you do it again or get into another line of work?
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Sunday, August 18th, 2019 AT 8:58 PM
Tiny
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  • MECHANIC
  • 52,797 POSTS
I would do it all over again. Love the industry.

Roy
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Monday, August 19th, 2019 AT 2:12 AM

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