Where are the fan fuses on a Saab 900?
The two fan fuses (30A and 40A) are in the same location. The fan can be tested with the engine on or off (but preferrably off), by removing first the “Fan Low” relay, and putting a test lead, or a heavy wire jumper between relay socket contacts #30 and 87.
Why is the low speed fan not working on my Saab?
If the fan never comes on after the engine is shut off, the low speed circuit may not be working. If the fan resistor burns out, or if the low fan speed circuit fails for other reasons, the fan will continue to cycle on the high setting to cool the engine, but the coolant (and engine) temperature will run about 10-15 degrees C high.
How do you test the fan on a Saab?
To measure the fan current, put a meter set to a 20-amp range in series with the test leads, across contacts 30 and 87. It is safer to test the fan curent with engine off: The fan connectors are close to the fan shroud near the battery tray. The picture at left is with the turbo BPV removed. Wire colors are as follows:
Why is the temp gauge on my Saab not working?
However is the temperature information used by the ECU for correcting idling speed, controlling radiator fans determinating injection at different phases etc., so if nothing abnormal is seen it may not be the ECU. The stepping motor – tja. Unplug the connector at the sensor, at cold, not running engine, and note any change of the gauge reading .
The two fan fuses (30A and 40A) are in the same location. The fan can be tested with the engine on or off (but preferrably off), by removing first the “Fan Low” relay, and putting a test lead, or a heavy wire jumper between relay socket contacts #30 and 87.
What to do if your Saab 900 wont start?
Video instruction Guide on How to diagnose why Saab 900 won’t start or crank up and how to do Auto Repair Service by remove and replacement parts. If you don’t want to do the work yourself you call a local mobile mechanic service that will come to you at home or any location near you.
To measure the fan current, put a meter set to a 20-amp range in series with the test leads, across contacts 30 and 87. It is safer to test the fan curent with engine off: The fan connectors are close to the fan shroud near the battery tray. The picture at left is with the turbo BPV removed. Wire colors are as follows:
If the fan never comes on after the engine is shut off, the low speed circuit may not be working. If the fan resistor burns out, or if the low fan speed circuit fails for other reasons, the fan will continue to cycle on the high setting to cool the engine, but the coolant (and engine) temperature will run about 10-15 degrees C high.