Should radiator fan turn on when ac is on.

I have a 2012 Chevy Sonic with the 1.8l engine and the radiator cooling fan will not come on. I have checked the fuses, relays, replaced the fan completely with the resistor located in the fan shroud. If I pull the fan relay it will turn on the fan and it will not shut off until I turn off the vehicle. Also the AC does not turn on the fan either.The AC was on and as soon as i switched it off, the fans turned off. Funny both the radiator and AC condenser fan run when the AC is on. Thanks a lot guys. BTW i found the soft copy for accord 03 to 07(7th Gen) service manual online for 10$. In case anybody's interested u can get it fromThe temp was 194 and steady. No cooling fans. Lower radiator hose cool to the touch. I revved the engine up to 2000 rpm for a couple on minutes. Temp rose to 200. Lower radiator hose finally hot, indicating that the thermostat opened. Still no fan running. I turned on the a/c with fan speed at 1. Both fans kicked on and cooled the coolant down ... The radiator fan should turn on when the AC is on in most vehicles. This activation helps manage the additional heat generated by the AC system, aiding in maintaining the engine’s optimal temperature. However, factors like vehicle design, ambient temperature, and system health can affect function.

I have the same issue, radiator fan and condenser fan only come on when you push the ac button to on and when it is hot at a red light the oil light comes on so we turn on the fans and the light goes off. What I have done so far. changed lower rad hose, burped it and replaced three grounds, battery to body, battery to engine and engine back to ...When it comes to keeping your home cool and comfortable, a ceiling fan is an essential appliance. One popular brand that homeowners often turn to is Harbour Breeze. Known for their...The temp was 194 and steady. No cooling fans. Lower radiator hose cool to the touch. I revved the engine up to 2000 rpm for a couple on minutes. Temp rose to 200. Lower radiator hose finally hot, indicating that the thermostat opened. Still no fan running. I turned on the a/c with fan speed at 1. Both fans kicked on and cooled the coolant down ...

Aug 5, 2019 · 2012 eco. My cooling fan is not acting as it should. What I have found so far: Fan does cycle at medium or high speed with AC or Defrost turned on. Fan does not turn on at any other time that I know of, or that I can hear while driving. With engine at idle/operating temp and parked, AC and defrost not turned on: Fan does not turn on at all. 4 Aug 2014 ... If the AC button is on and the fan is on and the ignition is on, but the engine is off, the radiator fans will turn on constantly. If I turn off ...

Diagnosing Ac-dependent Radiator Fan Issues. One common issue with radiator fans is that they only turn on when the AC is switched on. This behavior indicates an AC-dependent radiator fan problem, which needs to be diagnosed and resolved promptly to prevent further cooling system complications.Should you? Here are the pros and cons: Pros: Less start/stop stress on the fan. Consistently cleaner air because of constant filtration. Keeps the ambient air at a more even temperature. Plus, learn these 21 air conditioner maintenance and home cooling tips. Cons: Higher cost. With a 500-watt motor, this can be significant! Shorter furnace ...Check the Coolant Temperature Sensor: Utilize a diagnostic tool or a multimeter to verify the proper functioning of the coolant temperature sensor. Ensuring it works as it should is key. 3. Inspect the Fan Relay: Move on to inspect the fan relay. If it’s damaged or stuck, you’ve likely found the root of the problem.KEY TAKEAWAYS. Whether or not the fan should be on when the AC is on depends on your specific needs and circumstances. If you want to improve air …The radiator fan switch closes above 199°F (93°C). This means that the radiator fan switch turns on the radiator fan relay, which in turns activates the radiator fan motor. When you turn on the A/C. Both fans are activated and run continuously until the A/C is turned off since the PCM bypasses the radiator fan switch. Alright, let's get testing.

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1249476. Unless your car is overheating in stop and go traffic, which means you do have a fan problem, the fans only run when engine temperature gets hot or you turned on the AC or defrost. This is normal. If the fans ran constantly you would be replacing the alternator every 6 months.Feb 14, 2015 · The shutters close above 40 or 45 MPH (basically once you hit sixth gear) and remain closed until the car needs the extra air flow. This means they'll close this coming Monday (here in Denver) and stay closed until the temperatures go back up - probably Tuesday evening commute. As for the main cooling fan, it will turn on and off as needed. Radiator fan operation is controlled by the engine control module based on need or temperature of the cooling system. When driving, air flow through the condenser and radiator is adequate so the fans are usually off. Not moving reduces natural air flow so as the temp rises the fan or fans may be turned on. Just turning on the A/C may not …That said, below are reasons/fixes for your radiator fan not working when AC is turned on: 1. Low or no coolant at all. Your radiator fan may not be working but you’d notice it’s not overheating (in many cases). The cause of this problem is that you have too little to no coolant at all in the reservoir. Note that temperature sensors are ...ASRDogman said: ↑. Both fans will kick in when you turn the a/c on. It's to cool the hotter freon. I'm certain the fan IS coming on, or the engine would over heat. You won't notice it driving down the road because of road/tire, wind, and other noises. And if you sitting, the engine turns off, most of the time.1 Sept 2020 ... To check to see if both fans work, turn on the AC. With the AC on, both fans should spin at full speed. If not, something's not working ...

309 posts · Joined 2001. #2 · Dec 31, 2001. Primary fan turns on around 230 degrees and the secondary (high speed) fan turns on at around 257 degrees (i think). You might want to look into a fan controller. I have a Vinci and with the stock TSAT, I have it set to around 205 degrees.4 Aug 2014 ... If the AC button is on and the fan is on and the ignition is on, but the engine is off, the radiator fans will turn on constantly. If I turn off ...1249476. Unless your car is overheating in stop and go traffic, which means you do have a fan problem, the fans only run when engine temperature gets hot or you turned on the AC or defrost. This is normal. If the fans ran constantly you would be replacing the alternator every 6 months.Feb 10, 2014 · Our thermostats should be fully opened by 195 F/90 C, and cooling fan should be coming on by 210 F as far as I know. I'd consider changing thermostat if you're over 80K, and definitely suspect that cooling fan cause something isn't right. 2007 Phantom Purple hatch; JBR RMM/busihgs/shifter plate, Koni STR.t's, Michelin Pilot AS3's, Spin on oil ... Diagnosing Ac-dependent Radiator Fan Issues. One common issue with radiator fans is that they only turn on when the AC is switched on. This behavior indicates an AC-dependent radiator fan problem, which needs to be diagnosed and resolved promptly to prevent further cooling system complications.

My 2013 Hyundai i10 has one fan and as far as I can see one coolant temp sensor. I replaced water pump and radiator and coolant temp sensor. When I turn on the ac the fan works and keeps the car cool. When the ac is of the radiator hoses both become same heat after a while and the overflow reservoir starts boiling over and the fan do not kick in.

Greetings, My radiator fan doesn’t kick in until 219 degrees F. The radiator fan does kick in at lower coolant temperatures if I run the AC. Once the fan kicks in at 219, it cools everything down to 208 and then, if I am sitting and idling, the process repeats. If I am driving down the road, the van consistently runs between 195 and 210.The 2009-2012 v6 fan is a drop in for the 1500 5.7 and is not brushless. The pwm controller works for any standard fan. It will not work for brushless fans. I have been running an aftermarket version of the stock v6 fan from a 2012 for 2 years and the only issue I had was an electrical failure at the tipm.A dirty radiator. The radiator may need a thorough cleaning if the fan is always on when the car air conditioning (AC) is also on. Bad or broken wiring. Wrong wiring or broken wiring can cause a short circuit. Observe the insulation on the fan wires to check for signs of frays or damages.If you find yourself caught in a traffic jam with a hot engine, keep your car in neutral and rev the engine up a little bit. While the person next to you may think you want to race, this will make the water pump and radiator fan (if it is turned directly by the engine) speed up, which will aid in cooling the engine. Try to avoid riding the brakes.Dec 28, 2016 · Are you saying that with the cabin heater/AC fan turned Off, the radiator fans don't come on when the OBD-indicated temperature rises above 212 F? Whether or not there's a flow problem, the fans should be turned on by the ECM when the coolant temperature is high, without having to turn on the AC. 6 Dec 2014 ... Based on your first post I would say this may be normal for your car, but if you are not seeing the fans switch on by 101 C, I would suspect an ...There are 2 fans. Cooling fan and AC condenser fan. Right side is the condenser fan and left side is the cooling fan for your cooling system (not too sure). Which one isn't running? Your Cooling fan should not turn on if your engine is not over operating temperature threshold.Circulating the heat helps avoid having warmer or cooler spots throughout your home. Better Air Quality: Setting the fan to “on” also means the air will constantly cycle through your HVAC unit’s filtration system. If the filter is changed regularly, fewer particulates will be in the air, further improving comfort.Nov 8, 2023 · In most vehicles, the radiator fan does turn on when the AC is on, as it helps to dissipate the excess heat generated by the AC system, ensuring optimum performance and preventing the engine from overheating.

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However, the high speed fan will come on when I turn on my AC. I replaced the 5pins & 4pins relay as well as thermometer & Collings sensor. The coolant was boiling & spilling out of the reservoir tank when the temp gauge is at 3/4 mark ... Radiator fans not running 5 Answers. Yesterday, I changed my radiator fluid in my 2005 Buick Lasabre. I ...

The air conditioner also functions as a dehumidifier and fan. Plus, its various settings give users the power to control the temperature, intensity of the fan, noise level, …24 Apr 2017 ... The radiator fan should come on with the AC when the car is stopped. It use to be around +30 mph that this was disabled and no fan needed.Please help i have a 1998 hondaaccord 6 cylinder it keeps over heating so far i have changed thermostat, fan relays, thermostat switch i noticed my fans only turn in when the ac and or heater are on. for this reason i have some people telling me my fans are fine and its my water pump please ,let me know some opinions im desperate since water ...May 15, 2022 · I have a 2012 Chevy Sonic with the 1.8l engine and the radiator cooling fan will not come on. I have checked the fuses, relays, replaced the fan completely with the resistor located in the fan shroud. If I pull the fan relay it will turn on the fan and it will not shut off until I turn off the vehicle. Also the AC does not turn on the fan either. Essentially, your air conditioner unit’s fan mode controls the blower fan. You can choose to run the fan continuously or only when the AC is on. This setting helps circulate air in your home, but it won’t produce any new cold air. The Benefits of Turning the Fan Mode “On” ...AC blows cold while moving, and gets warmer while I'm stopped. There are two fans behind the radiator. One is suppose to begin running when the AC is turned on. The other is to cool the radiator when it gets too warm. Raise the hood with the engine running and AC "on"and see if at least one fan is running. May 04, 2009 • 1995 Buick …When the AC is on, the radiator fan’s function is crucial for maintaining optimal engine temperature and AC system functioning. Here are some frequent reasons why the radiator fan may not work while the air conditioner is turned on: Faulty Radiator Fan. The radiator fan may become worn out over time.With the rising costs of energy and the increasing concern for the environment, many homeowners are turning to alternative sources of power for their homes. One popular option is u...If you turn on the key, turn on the fan on the dash, and press the AC button, both fans out front should come on. If not, the low speed aspect is burned out.....Or, the brushes are shot. You can unplug each fan and test to see if brushes or the low speed is the culprit. Each plug has three connections.

Faulty Thermostatic Switch. The thermostatic switch is located on the side of the electric …Radiator fan operation is controlled by the engine control module based on need or temperature of the cooling system. When driving, air flow through the condenser and radiator is adequate so the fans are usually off. Not moving reduces natural air flow so as the temp rises the fan or fans may be turned on. Just turning on the A/C may not …YES. It should if the coolant is not being kept cool enough from just passive air flow alone to keep the engine temp low enough to prevent damage to the internal parts . What I understand that when the car is on the move the air from driving should be enough to cool off the coolant inside the radiator so the radiator fan shouldn't turn on high ...The fan issue sounds like burnt relay contacts at the fuse box. This is a common problem on these cars. When you undo the hex bolts that hold the fuse box, you can pull off the top half and inspect the connection points. If anything looks corroded/burnt, its time for a new box. 2007 Mustang GT/CS coupe.Instagram:https://instagram. price chopper raymore When it comes to keeping your home warm and cozy during the cold winter months, a reliable and efficient heating system is essential. One popular option that many homeowners are tu... pva winchester ky My independent mechanic says my radiator fan and AC fan are cycling too much. The dealer says they are not. I know it started about 6 months ago and that I get 2 miles per gallon less now. If the heat, defrost selector is in any position it happens as long as the fan control in not on off. The fans run for 5 seconds and then are off for 20 seconds. …Today I took let the car idle for a while, neither fans turned on. I drove around for about 10 or 15mins at low speeds and then let the car idle again. Periodically the A/C condenser fan would turn on and off to cool the engine, but nothing happens with the radiator fan. Keep in mind that the A/C is completely off during this time. My questions: waste management redding ca I thought the condenser fan only comes on when AC is on. When AC is on both turn at low speed. Both fans will go into high speed mode if needed when AC is on. Otherwise only the radiator fan runs. ... When the engine is cold the ETC switch should be closed( that opens the radiator fan #1 relay) keeping the fan from running. When the … sacsheriff.com inmate search That said, below are reasons/fixes for your radiator fan not working when AC is turned on: 1. Low or no coolant at all. Your radiator fan may not be working but you’d notice it’s not overheating (in many cases). The cause of this problem is that you have too little to no coolant at all in the reservoir. Note that temperature sensors are ...Mar 2, 2017 · At least until around 2009, as was noted earlier, if the engine is overheating, then the radiator fans should run regardless of whether or not the AC compressor is connected, or is turned on. Conversely, when the engine is not overheating , the radiator fans are normally not turned on (to save fuel) except if the AC (or windshield defroster) is ... ford 3000 tractor problems 1 Feb 2012 ... If you don't run the AC, the radiator fans will rarely turn on this time of year. As long as it doesn't overheat when driving in traffic you ... homemade cattle working pens Mar 30, 2024 · In this article, we’ll explain why having a functioning radiator fan while AC is on is important and how you can check if yours really is working. Keep reading to find out more. Quick Answer: Yes, the radiator fan should turn on when the AC is on in most cars. This is because the air conditioning system generates additional heat as it operates. You expect the radiator fan to run when you switch the air conditioner on. If the cooling fan refuses to work, one or more of the following is at fault: 1). The Thermo Fan Switch Is Dead. The radiator fan prevents the engine from overheating by pulling air from the atmosphere through the radiator to lower the coolant’s temperature. menards maplewood The radiator fan in a car only turns on when the AC is running. This is a normal phenomenon and does not indicate a problem. The AC compressor generates …16 Jun 2018 ... Could absolutely be something wrong which has the AC on all the time triggering the engine fan in turn to run full blast all the time. In my ... clash of clans blacksmith guide The radiator fan switch closes above 199°F (93°C). This means that the radiator fan switch turns on the radiator fan relay, which in turns activates the radiator fan motor. When you turn on the A/C. Both fans are activated and run continuously until the A/C is turned off since the PCM bypasses the radiator fan switch. Alright, let's get testing. fidelity novant Most a/c installations with a trinary switch will never have the fan running when you're cruising at 60-70 mph. Just as it would with the a/c off. In the a/c system high pressure = high termperature. There is no reason to turn the fan on unless there's high temperature. If the fan runs all the time, it just wears it out that much quicker.All vehicle ac systems are sealed from the factory with service valves made available to hvac repair people and knowledgeable diyers. If ac fails to run, the ecm knows this and does not turn on cooling fans. A dead ac system doesn't need cooling fans. This does not affect when cooling fans are needed when coolant temps rise. zaffiri precision slide May 15, 2022 · I have a 2012 Chevy Sonic with the 1.8l engine and the radiator cooling fan will not come on. I have checked the fuses, relays, replaced the fan completely with the resistor located in the fan shroud. If I pull the fan relay it will turn on the fan and it will not shut off until I turn off the vehicle. Also the AC does not turn on the fan either. doctor phil degree Mar 22, 2015 · There are 2 fans. Cooling fan and AC condenser fan. Right side is the condenser fan and left side is the cooling fan for your cooling system (not too sure). Which one isn't running? Your Cooling fan should not turn on if your engine is not over operating temperature threshold. Mar 22, 2015 · There are 2 fans. Cooling fan and AC condenser fan. Right side is the condenser fan and left side is the cooling fan for your cooling system (not too sure). Which one isn't running? Your Cooling fan should not turn on if your engine is not over operating temperature threshold. A radiator fan only turns on when the air conditioning system is switched on because the AC compressor requires additional cooling to prevent it from overheating. …