1994 Buick Lesabre heater problem

Tiny
SOAPGUY
  • MEMBER
  • 1994 BUICK LESABRE
I am only getting heat out of one side of the car. The heat is coming out on the passenger side only when on defrost and heat settings. The car does not have climate control. I sometimes get no heat at all. I had to replace the water pump because it had a bad bearing. I also replaced heater hoses and thermostat. I had someone flush coolant system.
Friday, December 15th, 2006 AT 12:29 PM

1 Reply

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
I looked at manual hvac, hope it isn't auto. I'd have to check temp door and or directional actuators. Some of these are vacuum controlled. With a fully warmed engine are the heater hoses hot. You may have to check coolant flow through the heater core.

There is temp control, if it blocks air flow across heater core, no heat. Note the hvac view.

I realize this is an old post. You may no longer own this vehicle. In the future hope you don't have any vehicle issues, but, if you do, keep the site in mind. They are always working to improve the site and it's free.

Have a good day.
Image (Click to make bigger)
Thumb
Was this
answer
helpful?
Yes
No
Monday, March 22nd, 2021 AT 12:58 PM

Please login or register to post a reply.

Related Heater Not Working Content

Heater Not Working
VIDEO
Heater Not Working
Instructional repair video
Heater Not Working
GUIDE
Heater Not Working
Step 1 - A heater cannot operate unless the engine is full of coolant/antifreeze. If coolant level is low check the system for leaks.
VIEW MORE