Why is the radiator fan not working on my Subaru Forester?
If your Forester has a bad engine temp sensor the radiator fan won’t know to come on, because the ECU won’t know how hot the engine is. You’ll need to locate and test the engine temp sensor. Depending on the model year and engine, the location varies. If it does end up being this sensor, they are very affordable.
How does a Subaru radiator keep the car cool?
There are three radiator components that make it possible for coolant to pass to the reservoir. The pressure valve, which allows coolant to pass to the reservoir as the vehicle gets warm. The vacuum valve, which brings coolant to the radiator as the car cools down. The radiator cap, which fastens the radiator shut.
How is the cooling speed of a Subaru engine controlled?
With applications made abroad — including parts made by the Japanese automaker — the speed of the cooling fan is controlled by a pulse–modulated fan motor. By way of contrast, in domestically made applications, fan speeds are activated by the powertrain control module. Either way, a fan can be diagnosed with the use of a code reader.
Why does my Subaru engine keep running out of coolant?
In this situation, the coolant repeatedly needs replenishing, despite there being no trace of oil or fluid on the ground. The likely reason is that coolant is being sucked into the head gasket and ejected from the exhaust.
What are common reasons my Subaru Forester overheats?
What are common reasons my Subaru Forester overheats? While there are a variety of reasons your Subaru Forester is overheating, the most common 3 are a coolant leak (water pump, radiator, hose etc.), the radiator fan, or a failed thermostat. See what others are asking about their Subaru Forester.
What causes a Subaru radiator to overheat?
Coolant Corrosion in the Radiator. If your Subaru overheats out on freeways and while driving up hills, it’s likely due to a lack of coolant flow to the radiator. As with other vehicles manufactured overseas, clogs can easily form in the cooling tubes of Subaru radiators due to very thin cross-sections.
What should I do if my Subaru engine wont cool down?
To prevent this from happening, have your technician inspect your vehicle and explain that the coolant sensor and thermostat are properly calibrated. Furthermore, warm up and cool down the engine to test the reliability of the thermostat and sensor, and to vent any air that might be stuck in the cooling system.
What’s the cel on a 2004 Subaru Forester?
I have a 2004 Impreza TS (same as ’99-’04 Forester) that had the Check Engine LIght (CEL) on for a P1443 – ” EVAP Control System Vent Control Function Problem “. The fix was to replace Purge Valve control solenoid, P/N: 16102AA080 (16102AA490 for ’05-’07) – located under the intake manifold on the passenger side of the engine.
Where is the drain valve on a Subaru Forester?
I spoke to a Subaru parts supplier that I’ve used for the last few years and he suggested, after talking to a tech, to replace the Canister Vent Valve also known as the Drain Valve, P/N: 42084FA120. This is in the back behind the passenger rear wheel underneath the car for the 1999-2004 Subaru Impreza (includes the WRX and STi) and Forester.
How can I test if my engine cooling fan is working?
That’s why you will need to test it. Unplug the fan connector closest to the fan. Make up some jumper cables. Then connect them directly, from the battery to the fan motor, to see if it spins. Consequently, if it does not spin it is blown.