Air Conditioning and Coolant
Heater Cores and Blower Fans
Buick Roadmaster

Where is the thermostat located on a 1994 Buick Roadmaster Sedan and can a bad one keep your heater from blowing hot air?


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2009-02-08 23:14:02
2009-02-08 23:14:02

The thermostat is located on top of the water pump. I would not attempt replacing it until you have looked at a repair guide, such as Haynes. The water pump is located above the Optispark distributer, and if you do not follow the proper proceure, you will drench the distributer and have a lot of problems. Your problem sounds like it may be a clogged heater core, which is not uncommon with these vehicles. You can try to have the heater core flushed out and see if that would help. If you were having trouble with the thermostat, the vehicle would probably be overheating. Frequently, the contacts on the heater door acturator will corrode and lose contact causing the door to remain in the open condition. Code 32 on HVAC in the climate control. Clean with deoxit and reattach to test. Correction, the code it 10 for open contact to the actuator.


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