Thermostat - Correct Application
87saab03FILE IN S.I. Man VOL. I
SEC. A-2 PG. 201
SUBJECT: CORRECT THERMOSTAT APPLICATION ISSUE: 03/87-943
APPLICATION: ALL SAAB 900, 9000 MODELS WITH 16 VALVE ENGINES
Because of the similar appearance of the 8V and 16V thermostat, it is possible to install the incorrect thermostat in the 16V engine. The result could be a temporary loss of heater output when the thermostat is fully opened.
The 16V thermostat 88-17-538, can be identified by its locating tabs which insure its proper alignment in the cylinder head. Additionally the lower disc is perforated to allow for coolant circulation to the heater when the thermostat is fully opened.
Use only genuine Saab three stage thermostats. Aftermarket units do not always have the same opening characteristics nor do they have the same flow design. Improper thermostat usage could cause any or all of the following: Overheating and possible engine damage, low or no cabin heat, sludging of the engine.