1994 Chrysler Concorde heater is not putting out heat

Tiny
MARKS41
  • MEMBER
  • 1994 CHRYSLER CONCORDE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 176,000 MILES
My son has a 1994 concord and the heater is not putting out heat. Both sides of the heatercore are getting warm so I am sure we are getting flow through the heatercore. The electric controll switches the lights from def. To floor to dash but I am not hearing the doors open and close and the air flow is on the floor and dash and does not switch. Can you give me an idea of what it could be Thanks Mark
Monday, January 5th, 2009 AT 2:41 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 110,176 POSTS
Mark:
The controls are run by vacuum. My guess is there is a leak or a broken vacuum line. Keep in mind, the blender door also runs on vacuum, so if it isn't opening, the air isn't passing over the heater core to heat it.

My first guess would be a vacuum leak. Most likely under the hood or near the firewall.

Joe
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Thursday, January 22nd, 2009 AT 5:02 PM
Tiny
MARKS41
  • MEMBER
  • 2 POSTS
I got it figured out and it is working, it was the controller it needed reprogramed. Thanks for your reply.
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Thursday, January 22nd, 2009 AT 6:35 PM

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