Ford f150 radiator fan runs constantly

One week. Firstly > IF a/c is on - cooling fan will be on - regardless.. No idea what has or has not been ‘tested’ here. Subsequent **hands-on** testing may be required. Be aware the A/C compressor / cooling fan also engages when other HVAC selections are made other than air conditioning settings .. Turn ALL HVAC controls *OFF* and observe ...Just completed replacement of Radiator Fan Control Module. Took about 1/2 hour. Fan control works great. No more fans running all the time. Ordered part on Amazon pointed out by Midnight earlier in the string of posts. Here's the procedure I used for remove and replacement: storage units in san diego Dec 16, 2019 · If it is being commanded on high then we need to look at what the temp sensor is reading. This is what the PCM looks at to determine if the fan needs to be on high. The thermostat fully opens at 212 F so if the fan is running on high before this is even open then as long as the sensor is reading properly then I suspect there is a wiring issue. Fan is on high speed, Truck is not overheating, Fan kicks on while driving, started shortly before I had a leak in the upper radiator hose. super smash flash unblocked by Waldo » Thu Apr 29, 2010 9:20 pm. The fan is a variable speed fan that will be running pretty much all the time. It ramps up and down in speed depending on load, A/C …Attached to the engine's water pump a fan clutch can go bad in one of two ways. First the and most common way a fan clutch can fail is the clutch shoe inside the unit can get stuck and not disengage causing the fan to lock up on the input shaft which will permanently engage the cooling fan which will be accompanied by a noticeable roaring sound. puppies for sale in baton rouge Shop for the best Cooling Fan Assembly for your 2015 Ford F-150, and you can place your order online and pick up for free at your local O'Reilly Auto Parts.May 5, 2017 · its a 2012 F-150 FX4. Now I know the electric cooling fan will run automatically I think when you your defroster on....but I notice lately once something turning it on..Like Defrost this am...Once I shut the defrost off..it still ran all the time. I know as I can hear it. a bit noisy when running so you know its running. Ford F150 Forum. The site for Ford truck owners, by Ford truck owners. Skip to content. Quick links. FAQ; F150 Forum. ... F-150. If you shop at Amazon.com (for anything), …When suddenly your truck give you the overheating sign but it's not overheating and the coolant fan goes on high amazon blink account loginCheck the harness to the EBP sensor and if you don't see anything, you can run with it unplugged for awhile - while you are tracking down the other codes. P0611 usually means a failed FICM, but if your truck is still starting, I would resolve the other issues first. Mark, '06 F250 CC FX4.16 jun 2022 ... This 2016 has had a couple shops trying to fix the AC. it intermittently stops blowing cold and the radiator cooling fans would run at high ... spi lcd raspberry pi Feb 24, 2016 · Now, every time I start it whether the engine is hot or cold, the coolant fan is always on HIGH! Thanks in advance for any input guys! Just took mine to the dealer, 2011 F150 FX4 5.0L, and the freon was low in the AC system. They evacuated the system and refilled it and the fans stopped kicking right into high! A radiator fan that’s always on likely has a serious issue preventing it from stopping, which is best diagnosed by a mechanic. If a radiator fan continually runs long after the engine is off, it’s commonly due to a faulty cooling fan relay or electronic control unit, or the radiator needs cleaning. In the rest of this article, I’ll ...Make sure the heater is off, start the engine and let it run for 6 to 8 minutes, ( this will allow the. engine to reach, " normal operating temperature "), from the inside of the vehicle turn the …Many Ford F150s around and including the 2015 model have insanely loud cooling fan noise that begins as soon as you turn the ignition on and stops only when you turn the truck off. Here's a...If the fan doesn’t come on, you need to look for a broken fuse or breaker. In older cars, you might have a fusible link – this is wire within an insulated block of rubber. If the wire …In case of damage to the insulation of the wires of the second coolant temperature sensor, the fan runs constantly when the engine is running. Faulty fan relay.I have a 2012 F150, 5.0. I live in Minnesota where it is cold already. I noticed both my electric radiator cooling fans are on high. I replaced the AC pressure sensor, but the problem continues. Looking for info on where the orifice tube is, and any other ideas the problem could be. Reply Like. cafe au lait spots 17 sept 2020 ... Hello, Before you heat up your engine, I suggest to remove the terminal hose from which the water return back to the water tank, ...To test the FCM you have to jumper the switch mounted in the radiator, the F18, switch, as in the fan troubleshooting guide. For slow speed the FCM is not used (from this temperature switch) and it will work with key off or key on. For fast speed the key must be on, and the FCM must function. D DanG144 Top Post Dawg Joined Aug 2, 2007 LocationThe most likely cause is due to the radiator fan constantly running and the engine not getting to operating temperature, thats why your temp gauge isnt going up, check all related wiring to the cooling fan and make sure there no bare wires that could be causing a short to ground causing the fan to constantly run, secondly check the fan relay, if … bob haircuts with bangs 16 jun 2022 ... This 2016 has had a couple shops trying to fix the AC. it intermittently stops blowing cold and the radiator cooling fans would run at high ...Sep 13, 2012 · The radiator fans ran in all positions and settings. Defrost on or off, a/c on or off, heat on or off. Fans still ran. -No fault codes on the OBD II scanner. -With car running, I gave both R15 & R16 some taps with a screwdriver handle. No change. -With car running I pulled R15 relay. Passenger side fan stopped. -With car running I pulled R16 relay. burke county ga dumpster locations I will pull the relays one at a time to see which one is closed. Any suggestions? If you're suspecting relays, it won't be closed all the time ...14 jun 2022 ... The cooling fan can be running all the time due to short relays. Short relays cause the power to stay on all the time and keep the fan running ...Dec 17, 2018 · Cooling fan runs on high all the time when truck is running. Asked by Jeff Dec 17, 2018 at 08:21 AM about the 2016 Ford F-150 XL SuperCrew Question type: Maintenance & Repair 1 Answer 305 Ahmad answered 4 years ago Check the water pump sensor, check wires, if not corroded then you may need to replace the sensor. Mark helpful kotlc fanfic pregnant The fan always turns when running [like at idle] when the pcm begins to see higher temps than it likes it engages the fan electrically by heating the viscos fluid in the clutch which makes it swell tightening the clutch. Good catch Heavy Assault. paranoidredneck Registered Joined Apr 10, 2008 49 Posts Discussion Starter · #8 · May 1, 2014Another common symptom of a faulty fan clutch is excessively loud cooling fans. If the fan clutch gets stuck in the engaged position, which is not uncommon, it will cause the fans to fully engage even when it is not desirable for them to be on. This may result in an excessively loud engine from the fan blowing at full speed. esxi gpu passthrough gaming The most likely cause is due to the radiator fan constantly running and the engine not getting to operating temperature, thats why your temp gauge isnt going up, check all related wiring to the cooling fan and make sure there no bare wires that could be causing a short to ground causing the fan to constantly run, secondly check the fan relay, if …Sep 13, 2012 · The radiator fans ran in all positions and settings. Defrost on or off, a/c on or off, heat on or off. Fans still ran. -No fault codes on the OBD II scanner. -With car running, I gave both R15 & R16 some taps with a screwdriver handle. No change. -With car running I pulled R15 relay. Passenger side fan stopped. -With car running I pulled R16 relay. Feb 13, 2019 · Working on a 2013 F150 XLT with a 5.0. Had it running the radiator fan running at high speed all the time. Changed the AC switch with no results, did some YouTube research and discovered the AC expansion valve causes this. Changed the valve, got a motorcraft one at Rockauto.com. Removed and replaced with all new seals that I bought separately ... 2009 - 2014 F150 - Radiator fans run constantly - 14', 5.0, 200K My radiator fans run almost constantly when the AC is on even, I believe, at highway speeds. This started last weekend when I charged the AC the fans came on and now will shut off for a few seconds then they start running on high again.My radiator fans run more often then they used to. In the fall & winter, they nearly never ran; they would only run if I turned on the A/C compressor. My cooling system is good -- …Often, the fan constantly runs if its negative wire is frayed. Depending on the engine, the wires can be located in different places. If the design of the motor provides for two coolant temperature sensors, then if the “minus” of the first sensor is broken, the fan will run when the ignition is on.2011 F150 5.0 Rad Fan runs constantly. 130. Asked by sK Apr 10, 2021 at 05:52 PM about the 2011 Ford F-150 XLT. Question type: Maintenance & Repair. 2011 F150 5.0 Had all my coolant lines and thermostat replaced due to big. coolant leak issues. It did overheat once the day before I took it in to the. shop. sedna in synastry Jul 9, 2021 · 2009 - 2014 F150 - Radiator fans run constantly - 14', 5.0, 200K My radiator fans run almost constantly when the AC is on even, I believe, at highway speeds. This started last weekend when I charged the AC the fans came on and now will shut off for a few seconds then they start running on high again. My radiator fans run more often then they used to. In the fall & winter, they nearly never ran; they would only run if I turned on the A/C compressor. My cooling system is good -- … conduent jobs Feb 10, 2017 · 2013 Ford F150 V8, radiator fan began running on loud high today. Mileage is 9,700 (yes, only 9,700) Only happens when a/c switch is on, even if you set temp to full hot and blow hot air instead of cold. I'll replace fuse #27 as suggested and hope for the best. RASMATAZ. It sounds like you have a fan control module that is out which is part of the cooling fans, here is the radiator fan wiring diagrams so you van see how the system works. The PCM monitors certain parameters (such as engine coolant temperature, vehicle speed, A/C ON/OFF status, A/C pressure) to determine …This has happen twice, the first time the radiator fan continued to run at high speed after the engine was turned off and ran the battery down, had to jump off. Car was ok, … poems by nikki grimes analysis The most common reason for a radiator fan to keep running is because the engine is overheating. If the coolant temperature gets too high, the fan will turn on to help cool down the engine. Although if this occurring quite often even in normal conditions, it may be a sign of a bigger issue. Also Read: Car Overheating When Idle Bad Temperature Sensorby Waldo » Thu Apr 29, 2010 9:20 pm. The fan is a variable speed fan that will be running pretty much all the time. It ramps up and down in speed depending on load, A/C … skipthegamez 2009 - 2014 F150 - Radiator fans run constantly - 14', 5.0, 200K My radiator fans run almost constantly when the AC is on even, I believe, at highway speeds. This started last weekend when I charged the AC the fans came on and now will shut off for a few seconds then they start running on high again.Since your fan run even when the engine is cold,my advise is to go direct to the temperature sensor,which actually is the main culprit for causing the confusion to the ECU. Since the temperature sensor does not work correct,the message send to the ECU is wrong - like is sending that the engine is hot - the ECU order the fan to start.The problem is your fan has 2 speeds and low speed should turn on and stay on as soon as you start your engine with AC on. You only have high speed which only kicks in when the pressure gets too high in the compressor then the pressure goes down and it kicks off. It's a bad cooling fan resistor that has no low speed. Check this link.Low prices on Engine Cooling Fan for your Ford F-150 at Advance Auto Parts. Find aftermarket and OEM parts online or at a local store near you. solitaire cash legit or scam In case of damage to the insulation of the wires of the second coolant temperature sensor, the fan runs constantly when the engine is running. Faulty fan relay.With a fan cluthc your fan will rotate constantly regardless. The clutch engages and locks the blade to it so that it spins faster than normal the hotter that it gets. The only time that your fan will not spin is when the motor is off. It is a common misconception that the fan will only spin when the clutch engages.The electric cooling fan on my escape seems to come on and run more than it should. In cool weather the fan comes on once it is at operating temps (read from interior gauge) and will not shut off unless I turn the heat and interior fan on full (air seems rather hot...gauge is right in the middle between hot and cold at operating temp). bookings predictions today Usually a bad or failing fan clutch will produce a few symptoms that can alert the driver of a potential issue. 1. Vehicle overheating. One of the first symptoms that is commonly … craigslist houses for sale by owner klamath falls oregon I had what appeared to be a bad fan module, so I replaced it and now the new one stays on, even hours after the car has been shut off, running the battery down. I took it to the mechanic and they said it was a faulyty module on the new assembly (TYC brand) I was thinking the module is getting a signal from the vehicle to come on and stay on.A/C cooling fans could continue to run if they are wired off of constant 12 volt instead of ignition and the temp sensor or relay shorted. My guess is you are hearing the fuel pump running (can sound like a fan with nothing else on). I believe there is a relay as part of the ignition circuit that can cause this.I have a 2016 F150 XLT. Last year the cooling fan started running incredibly loud. You can not have a conversation near or in the truck while it's running. It also runs very frequently. Coming on right after the truck is started. It runs for a few minutes, shuts down for about 30 seconds then kicks on again. 100 free spins no deposit Just completed replacement of Radiator Fan Control Module. Took about 1/2 hour. Fan control works great. No more fans running all the time. Ordered part on Amazon pointed out by Midnight earlier in the string of posts. Here's the procedure I used for remove and replacement:Low prices on Engine Cooling Fan for your Ford F-150 at Advance Auto Parts. Find aftermarket and OEM parts online or at a local store near you.The most common reason for a radiator fan to keep running is because the engine is overheating. If the coolant temperature gets too high, the fan will turn on to help cool down the engine. Although if this occurring quite often even in normal conditions, it may be a sign of a bigger issue. Also Read: Car Overheating When Idle Bad Temperature Sensor iowa unsolved murders To test the FCM you have to jumper the switch mounted in the radiator, the F18, switch, as in the fan troubleshooting guide. For slow speed the FCM is not used (from this temperature switch) and it will work with key off or key on. For fast speed the key must be on, and the FCM must function. D DanG144 Top Post Dawg Joined Aug 2, 2007 LocationFord Year: 2006. UK/Ireland Location: Posted February 16, 2010. On 2/16/2010 at 5:25 AM, wijcc said: I had this problem before.. where the radiator fan constantly goes on/gives turning even after i switch off the car, draining my car battery. I resolved this problem about 2.5 months ago by fitting a new thermostat. asko dishwasher parts I bought my 2014 F150 with 5.0 engine with 116,000 miles. I replaced water pump and now the cooling fans always run on high when the A/C is ...The A/C is actually on when this happens. Why I have no idea. It's 33F out, cold engine just started, climate control is set to 72 Auto, and the a/c indicator is OFF. Turning it the … xglppt ford f150 radiator fan runs constantly Electric Fan on Super Cooling radiator - Ford Truck Enthusiasts Forums. 10 Pictures about Electric Fan on Super Cooling radiator - Ford Truck Enthusiasts Forums : How to Replace Radiator Fan Assemebly 10-14 Ford F 150 - YouTube, 2011 Ford F150 Blower Fan Speed Stuck On high | Doovi and also Replacing Engine Fan With …Ford Endeavour 2007-2009. Rs. 22.05 Lakh * (Price in New Delhi) Diesel 11.4 kmpl 2953 cc. My key status ford f150 Step 3 – Confirm key is programmed. After Step 2, your theft indicator light should blink three times. This means ...My 2016 f150 has been under warranty and the Ford dealership said my fans stay running like that because that is the way they've designed them but no other truck runs at high speed like … umr cpap coverageApr 10, 2021 · 2011 F150 5.0 Rad Fan runs constantly 140 Asked by sK Apr 10, 2021 at 05:52 PM about the 2011 Ford F-150 XLT Question type: Maintenance & Repair 2011 F150 5.0 Had all my coolant lines and thermostat replaced due to big coolant leak issues. It did overheat once the day before I took it in to the shop. I had what appeared to be a bad fan module, so I replaced it and now the new one stays on, even hours after the car has been shut off, running the battery down. I took it to the mechanic and they said it was a faulyty module on the new assembly (TYC brand) I was thinking the module is getting a signal from the vehicle to come on and stay on. directv swim adapter Jul 9, 2021 · 2009 - 2014 F150 - Radiator fans run constantly - 14', 5.0, 200K My radiator fans run almost constantly when the AC is on even, I believe, at highway speeds. This started last weekend when I charged the AC the fans came on and now will shut off for a few seconds then they start running on high again. Why is my f150 fan so loud: common causes in detail 1. The AC system The F150’s air conditioner being faulty is one the most common reasons why your cooling fan is so loud as it …Feb 10, 2017 · 2013 Ford F150 V8, radiator fan began running on loud high today. Mileage is 9,700 (yes, only 9,700) Only happens when a/c switch is on, even if you set temp to full hot and blow hot air instead of cold. I'll replace fuse #27 as suggested and hope for the best. athena net login The fan is a variable speed fan that will be running pretty much all the time. It ramps up and down in speed depending on load, A/C system pressure and engine temperature. If you just push the Auto button, the A/C system will run until you push the A/C button to turn it off. edouble75 Posts: 1 Joined: Mon Oct 31, 2011 6:45 pmThe coolant fan stay on at high speed all the time the engine is running at cold and warm Ford Have Ford questions? Ask a mechanic for answers ASAP Ask an Expert Car Questions Ford Repair This answer was rated: ★★★★★ I hav a 2015 Ford F-150 3.5. The coolant fan stay on at high… Hi there I hav a 2015 Ford F-150 3.5. private owners that accept evictions Shop for the best Cooling Fan Assembly for your 2015 Ford F-150, and you can place your order online and pick up for free at your local O'Reilly Auto Parts.The last thing is a broken radiator, something stuck inside avoiding water to flow through, remove the intake hose of the radiator and the water tank cork to allow air to escape, then blow air in the intake hose, if you see bubbles ns the water tank as strong as the pressure you put in it then that’s fine. Was this answer helpful? Yes No Score 0 Aug 24, 2009 · A/C cooling fans could continue to run if they are wired off of constant 12 volt instead of ignition and the temp sensor or relay shorted. My guess is you are hearing the fuel pump running (can sound like a fan with nothing else on). I believe there is a relay as part of the ignition circuit that can cause this. To test the FCM you have to jumper the switch mounted in the radiator, the F18, switch, as in the fan troubleshooting guide. For slow speed the FCM is not used (from this temperature switch) and it will work with key off or key on. For fast speed the key must be on, and the FCM must function. D DanG144 Top Post Dawg Joined Aug 2, 2007 Location american health caritas Temp guages for fine so I'm not warm or even getting near warm. I will have to leave it sit this weekend running and let it heat up till needs to cooling fan and see if it cycles on and off or just stays on after it turns on in those cases too. Just not sure what would cause that and I don't remember it acting that way before.Auto shut off mode was active (fuel saving mode). As some point along her 20 mile trip the radiator cooling fan came on. I thought this was odd due to the air temperature. At … as69rc valve body A radiator fan that’s always on likely has a serious issue preventing it from stopping, which is best diagnosed by a mechanic. If a radiator fan continually runs long after the engine is off, it’s commonly due to a faulty cooling fan relay or electronic control unit, or the radiator needs cleaning.Jul 2, 2013 · It's normal for the fan to still be locked up when it's first started. After a block or two it should unlock if the radiator is cold. Fan coming on while towing a boat up a hill in 90 degree weather is expected. Coming on while unloaded and climbing a grade is also expected. new 22 rifles for 2022 Jul 9, 2021 · 2009 - 2014 F150 - Radiator fans run constantly - 14', 5.0, 200K My radiator fans run almost constantly when the AC is on even, I believe, at highway speeds. This started last weekend when I charged the AC the fans came on and now will shut off for a few seconds then they start running on high again. Working on a 2013 F150 XLT with a 5.0. Had it running the radiator fan running at high speed all the time. Changed the AC switch with no results, did some YouTube research and discovered the AC expansion valve causes this. Changed the valve, got a motorcraft one at Rockauto.com. Removed and replaced with all new seals that I bought separately ...Just completed replacement of Radiator Fan Control Module. Took about 1/2 hour. Fan control works great. No more fans running all the time. Ordered part on Amazon pointed out by Midnight earlier in the string of posts. Here's the procedure I used for remove and replacement:Another common symptom of a faulty fan clutch is excessively loud cooling fans. If the fan clutch gets stuck in the engaged position, which is not uncommon, it will cause the fans to fully engage even when it is not desirable for them to be on. This may result in an excessively loud engine from the fan blowing at full speed. bpd or autism test Why is my f150 fan so loud: common causes in detail 1. The AC system The F150’s air conditioner being faulty is one the most common reasons why your cooling fan is so loud as it will need to work harder. Examples include the following: There could be a leak in the refrigerant. The coolant could be low – it should be changed every two years.A radiator fan that’s always on likely has a serious issue preventing it from stopping, which is best diagnosed by a mechanic. If a radiator fan continually runs long after the engine is off, it’s commonly due to a faulty cooling fan relay or electronic control unit, or the radiator needs cleaning. In the rest of this article, I’ll ... brooklyn chamber orchestra auditions Usually a bad or failing fan clutch will produce a few symptoms that can alert the driver of a potential issue. 1. Vehicle overheating. One of the first symptoms that is commonly …The fan relay controls the power to the cooling fan. If there's an issue with the relay, the fan will be affected. It may cause the fan to cut in and out, or not come on at all. A wiring issue Faulty wiring could be to blame. The mechanic will check to see if all the wires to the fan are properly connected and in working order.Mar 20, 2022 · A radiator fan that’s always on likely has a serious issue preventing it from stopping, which is best diagnosed by a mechanic. If a radiator fan continually runs long after the engine is off, it’s commonly due to a faulty cooling fan relay or electronic control unit, or the radiator needs cleaning. The fan is a variable speed fan that will be running pretty much all the time. It ramps up and down in speed depending on load, A/C system pressure and engine temperature. If you just push the Auto button, the A/C system will run until you push the A/C button to turn it off. edouble75 Posts: 1 Joined: Mon Oct 31, 2011 6:45 pm men waxing near me My radiator fans run more often then they used to. In the fall & winter, they nearly never ran; they would only run if I turned on the A/C compressor. My cooling system is good -- …My f150 5.0 coolant fans were running non stop on high after I changed water pump and thermostat. Endless attempts at fixing other things, what fixed it was ... This has happen twice, the first time the radiator fan continued to run at high speed after the engine was turned off and ran the battery down, had to jump off. Car was ok, …22 ene 2022 ... Poor A/C Performance And/Or Engine Cooling Fans Running Continuously – 2015-2022 Ford F-150, 2017-2022 Super Duty & 2018-2022 Expedition ... golf cart solenoid For the past month I've been noticing that the radiator fans are running a lot and quite loud. I live in Canada and it is the middle of winter so I find it weird that the "cooling" fans are usually kicking in right away when I start the truck. Even if I turn the heating system off then start it up again it will still do it.Just completed replacement of Radiator Fan Control Module. Took about 1/2 hour. Fan control works great. No more fans running all the time. Ordered part on Amazon pointed out by Midnight earlier in the string of posts. Here's the procedure I used for remove and replacement:2012 Ford F-150 FX4 SuperCrew 4WD - Maintenance & Repair 2011 F150 5.0 Rad Fan runs constantly 2 Answers 2011 F150 5.0 Had all my coolant lines and thermostat replaced due to big coolant leak issues. It did overheat once the day before I took it in to the shop. After the fix my fan kicks on and stays o... 2011 Ford F-150 XLT - Maintenance & RepairRadiator fan stuck on high I’ve been chasing this issue for years has anyone out there had This Issue and figure it out why.I think is an AC issue as soon as I turn the AC on The fan gets extremely loud.When I shut off the AC after a couple of minutes the fans stop.I have started to notice though even with the AC off the fan still kicks on once in a while especially when it is damp outside. how to open keef soda can 2016 F150 AC Intermittent and Rad Cooling Fan Runs On High For No Reason Phillip Bailey 12.1K subscribers Subscribe 6K views 6 months ago This 2016 has had a couple shops trying to fix the... short reading comprehension for grade 4 with multiple choice questions Sounds like your engine is trying to over cool itself. This would explain the fan running, and no heat. Probably some temperature sensor malfunction, or a stuck thermostat (assuming these trucks still have those). My Trucks: 2009 F150 4x4 4.6L 3v 1990 Bronco 5.8L CSBranger New Member Posts: 4 Joined: Fri Mar 22, 2019 5:11 amCheck the harness to the EBP sensor and if you don't see anything, you can run with it unplugged for awhile - while you are tracking down the other codes. P0611 usually means a failed FICM, but if your truck is still starting, I would resolve the other issues first. Mark, '06 F250 CC FX4.The last thing is a broken radiator, something stuck inside avoiding water to flow through, remove the intake hose of the radiator and the water tank cork to allow air to escape, then blow air in the intake hose, if you see bubbles ns the water tank as strong as the pressure you put in it then that’s fine. Was this answer helpful? Yes No Score 0 horseshoe casino restaurants council bluffs Apr 29, 2010 · The fan is a variable speed fan that will be running pretty much all the time. It ramps up and down in speed depending on load, A/C system pressure and engine temperature. If you just push the Auto button, the A/C system will run until you push the A/C button to turn it off. edouble75 Posts: 1 Joined: Mon Oct 31, 2011 6:45 pm Apr 29, 2010 · The fan is a variable speed fan that will be running pretty much all the time. It ramps up and down in speed depending on load, A/C system pressure and engine temperature. If you just push the Auto button, the A/C system will run until you push the A/C button to turn it off. edouble75 Posts: 1 Joined: Mon Oct 31, 2011 6:45 pm Conditions: Air temperature 30 degrees F. Front defrost button on. Auto shut off mode was active (fuel saving mode). As some point along her 20 mile trip the radiator cooling fan came on. I thought this was odd due to the air temperature. At stops the engine shut off as expected. Cooling fan continued to run.Oct 4, 2022 · If your Ford F-150’s radiator fan runs constantly, there are a few potential causes. It could be something as simple as a faulty thermostat, or it could be something more serious like a head gasket leak. In any case, it’s important to get the problem diagnosed and repaired as soon as possible to avoid further engine damage. fram ultra synthetic oil filter