For a conventional desktop PC with a big, roomy case and a few case fans, open air coolers tend to perform better, cooling the GPU to a marginally greater degree. That's because they have better airflow with fewer obstructions. Even though the system is using the warm air that's already inside the case, having that extra flow will keep your GPU 2. Dead Wires. If you see the engine heating but the radiator fan isnā€™t, the fan wires could be the culprit. Simply unplug both the wires, negative as well as positive. The standard direct current they must put out is 12v (approx.). Take a voltmeter and check for the presence of current. The first thing that you would want to do is locate the fuse for your Sonataā€™s radiator fan and make sure that it hasnā€™t blown. If it is blown, replacing the fuse will only solve the problem for a very limited period of time. Unless the wiring issue is fixed, the fuse will blow again. The wiring harness itself can go bad. Give the water pump hose a quick jostle as well to see if the problem might lie there. 5. Spot-check for oil leaks. Run your finger along the edges of the bearing seal on the backside of the fan clutch. If it comes away with a heavy coating of oil, the culprit is either a crack or a faulty seal. The engine cooling fan is designed to move air through the radiator when the vehicle is at slower speeds or stopped. This air flow removes heat from the coolant created by the engine using the radiator as a conductor. An engine cooling fan is temperature controlled to only run when needed. 7 Answers. check the fuses and relays. if they are good, unplug the fan and put a 12v jumper wire from the battery to it and see if it works. then you will know if it is the fan. 13 people found this helpful. The fan is wired in series, so if the first fan is getting power the second should as well. 1. Check by hearing for the fan to turn on. If the engine coolant is hot and up to temperature, the fan should turn on. You can listen for the fan to start running when the engine is hot. The fan will only turn on if the coolant is above its target temperature (such as on a hot day, stuck in traffic, or after hard driving). 2. For the MacBook Pro 13-inch, our test system has a little extra memory and larger storage, while the M2 MacBook Air also has the boosted 10-core GPU and same 16GB of memory and 1TB of storage Since you didn't post any make, model or year. The generic answer is the low speed comes on at a certain engine temp or a/c pressure and it goes to high speed if the temps or pressures exceed the low speed ranges. The PCM turns the fans off & on via a relay. To achieve the 2 different speeds the fans are wired in series for low speed ( shared 1LUdoX.

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