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Heater Not working

[Saab 900, 9000, 93, 95, 99]

This is a generic statement but also applies to almost every Saab. Take a close look at the thermostats first when the heat is not working because they usually are the culpit regardless of the car

Most of the problems with heaters not working correctly can be attributed to faulty thermostats. The problem is typically an issue with the thermostat being stuck open. When this occurs the coolant temperature never gets hot enough to heat the coils of the heater core which prevents the incoming air from being warm enough.

Thanks to Nathan Bright for contributing to this FAQ!

STEP 1 Check your coolant levels. If coolant is running too low there may not be enough fluid flowing through the coils to provide heat.

NG900 and 93

STEP 2 On my NG 900S the temperature control knob has an arm attaching to the actual heat control, and it was disconnected. Remove the radio, feel around behind the temperature knob to be sure the arm is connected, and follow with a flashlight toward the engine to see if it's connected and able to turn the heat control properly. If the arm is disconnected it will push back into place easily but you'll need skinny arms to reach back that far.

Saab 95 (9-5)

STEP 3 There have been tons of problems with the Blend doors breaking on the Saab 95 cars. See the heating and cooling sections of hte 95 Faqs for more information but basically what happens is the blend door for the heating and cooling system snaps at the left joint. In most cases this would require complete heater box replacement but we have come up with a permanent repair for less than 100.00

Saab 900 1979-94

STEP 4 The Classic 900 cars had tons of problems with the metal heater valves breaking which causes the heat to no longer function correctly. Replacement of the metal valves with plastic ones typically cured the problem but we have also seen tons of problems with the plastic valves leaking on the cheaper version of this valve (we don't sell those)

Pricing for 9000 THERMOSTAT KITS & RELATED (heating & cooling system)
Pricing for 900 79-94 THERMOSTAT KITS & RELATED (heating & cooling system)
Pricing for 900 94-98 THERMOSTAT KITS & RELATED (heating & cooling system)
Pricing for 93 03-12 THERMOSTAT KITS & RELATED (heating & cooling system)
Pricing for 93 98-03 THERMOSTAT KITS & RELATED (heating & cooling system)
Pricing for 95 THERMOSTAT KITS & RELATED (heating & cooling system)
Pricing for 99 THERMOSTAT KITS & RELATED (heating & cooling system)

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