Engine hot ac off what does that mean

Question type: Maintenance & Repair. Our car keeps saying engine hot then below that. says a/c off. Also the tempreture gage is all the. way at zero.the heat works he have not had the ac. on in a while,it did this and took it in and the. mechanic replaced the thermostat it has been. normal after that, and now a week later its doing.

If your car’s AC is blowing warm air, it could be due to a high engine temperature. Here’s how to fix it: 1. Check the radiator and cooling system for leaks. If there are any leaks, repair them immediately. 2. Check the coolant level and add more if …The 2009 Chevrolet Impala has 1 problems reported for engine hot, turn ac off warning. Average failure mileage is 350,000 miles.In contrast, major repair costs range from $500 or more depending on the part that needs to be fixed. Major repairs include issues on the water pump, radiator, head gasket, and engine block. Recruiting a mechanic to fix the leak could cost you up to $300. The regular cost of a coolant leak repair hits around $700.Either way, low coolant pressure is going to lead to an overheating engine. 9. Low Oil. This is a very rare issue, but it can absolutely happen! Oil has several properties, but one of the critical ones is cooling. Without enough oil, engine components will create a lot more friction, which heats everything. If it gets too hot, your engine can ...April 27, 2022 at 7:42 pm. My 2008 Impala keeps reading engine hot/ac off. I've already replaced the thermostat, coolant sensor & sensor connector. Flushed the radiator & refilled with dexcool. It was working fine then started getting the engine hot message again. There are no leaks, & no noticeable issues with my water pump.The AC is intermittently blowing hot air and the message Engine Hot a/c turned off just came on. The temperature gauge went back to normal after the ac turned off … read morePreparing for the Joint Entrance Examination (JEE) Mains can be a daunting task for any aspiring engineering student. With competition at an all-time high, it is crucial to have an...

Here's a step-by-step guide to play interesting games on your Tesla Model 3: 1. Access The Touchscreen: Touch the large screen in the centre of your car's dashboard while you are securely stopped or parked. 2. Locate The "Entertainment" Icon: On the screen and look for the symbol that reads "Entertainment.".The instrument panel cluster (IPC) illuminates the TEMP indicator when the powertrain control module (PCM) determines that the coolant temperature is more than 128°C (262°F). The IPC receives a discrete input from the PCM requesting illumination. •. The IPC performs the display test at the start of each ignition cycle.Mar 21, 2024 · Reasons Your Car Is Running Hot But Not Overheating. Many of the same reasons the car runs hot and overheats will still apply. These include a bad thermostat, a clogged or defective radiator, a faulty coolant temperature sensor, a bad water pump, low coolant, air in the cooling system, a malfunctioning temperature gauge or a worn-out engine ... Another issue can be air flow. When the a/c is turned on, the radiator fan will typically turn on as well. first or all to provide air flow through the a/c condenser to provide you with cool air, and second to keep the engine temperature within range. If the fan is not coming on for any reason, the engine temperature will climb as well.Nov 7, 2020 ... Check out our DIY Raptor Club store https://teespring.com/stores/diy-raptor-club.Thermostat. The DIC message of "AC off due to high temp" comes up and the TC P0128 is stored. Cause: After switching off the hot engine the coolant temperature could reach above 130°C. This high temperature causes the thermostat to open until the limit stop and stick in the open position. The measured coolant temperatures in radiator and ...

Engine hot a/c off 2013 impala. Jump to Latest Follow 1K views 3 replies 4 participants last post by TCW Oct 22, 2023. X. xtremewhite99 Discussion starter 223 posts · Joined 2011 Add to quote; Only show this user #1 · Oct 15, 2023. Hello I am wondering what could be causing this my 2013 Chevrolet impala has been saying engine hot a/c off. ...Your Chevy Impala displays the message "Engine Hot, AC Off" when the engine temperature exceeds a safe threshold. It is a warning to prevent further damage t...correct. And the a/c clutch doesn't activate. yes. The AC will be locked out when the engine hot message appears. This si 100% normal. Does not mean AC problem. It is just a setting built into computer,. I am thinking you have a bad ECT or engine coolant temp sensor problem.5. Bad spark plug wires. mediagram/123rf. A bad spark plug wire can and will make your check engine light turn on. As its name implies, a spark plug wire transfers electricity from the coil to the ...3. Remove the existing key and, within fifteen seconds, insert the new key. and turn it to ON (RUN). 4. The security light will light up for two seconds to indicate success in programming. the key into the vehicle. Originate New Master Key (PK3 or PK3+ key) 1. Insert new key into ignition cylinder and turn it to the ON (RUN) position.

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AC Off warning. Monday night, the "AC OFF" light came on the dash. I did some research and know that it is probably the thermostat, a sensor, the water pump, or an electrical problem. I never had any other lights come on, like the check engine, or an "Engine HOT" warning. In fact the temp gauge went all the way down to cold.Not any ping ,knock, leaks etc. Then a few days ago my engine hot turn a/c off displayed and my temp gauge is staying on C.. the car wasn't hot, antifreeze is good at at correct level. The a/c wasn't on in the first place because it was 25 degrees out. Then my amber engine light pops on. I'm about to go disconnect the battery.I ask this because the temp gauge staying on cold can mean there is an issue with an open thermostat. This can affect the cooling system and the air conditioning. Typically, however, when that message comes up it's due to a condition in which the engine is running hotter than normal. The car will then turn off the air to keep the engine cooler.Temperature coolant sensor you meant. Check the coolant level and check the hoses from the radiator if are hot (just touch and let go). This would show if the thermostat is ok. Also you could step out of the car and leave the interior fan on the highest mark to see if temperature is coming down. A bigger problem could be a blown headgasket...

Add to Cart. Product Details. Core Dimensions : 25.19 x 18.69 x 0.63 in. Core Size Automatic Transmission Cooler : Without Transmission Cooler Engine Oil Cooler : Without Engine Oil Cooler. See All Products Details. Replacement. Radiator, 3.3L/3.8L Engines, Aluminum Core, Plastic Tank. Part Number: P2795. 59 Reviews.The reason why the engine is hot and AC turned off is mostly caused by low oil levels, a clogged air filter, or worn-out belts and hoses. If you act immediately, you can prevent more damage like a cracked head gasket, warped cylinder head, or blown engine. Be sure to check your vehicle right aways as it can cause serious damage.Apr 14, 2019 · The code that gets thrown out most often after the issue happens is BA222. It turns out the code is a GM specific code for "system anomaly". Basically, there are two temp sensors, one for the gauge and one for the ECM. After the truck is running for a short time while the outdoor air temp is very mild (in the upper 50s or lower 60s) the ECM ... 2. Car Interior Feeling Physically Hot. If your car is abnormally hot and you can smell rubber or plastic burning, it could mean that it has overheated. The smell could be a sign of plastics and gasket melting. 3. Ticking Sounds From the Engine Compartment. If engine oil is utilized beyond the recommended period, it will stop being viscous.Engine Hot AC Off - What Does It Mean and What Causes It? By Austin Parsons December 12, 2022 December 21, 2023. One of the most common warning lights associated with an overheating engine is the "Engine Hot AC Off" message, which can catch unsuspecting drivers off guard. This message is most common on GM cars with digital dash displays ...2006 Impala Engine Hot Issue. In reading some of the posts regarding false messages indicating an Engine Hot message (and subsequent Engine Hot/ Turn AC Off) displays, I experienced exactly the same thing with my 2006 3.9 LTZ. One night driving home from work, I got an Engine Hot message and thought "HOLY CRAP!".25 posts · Joined 2015. #1 · Oct 20, 2021. hi my 2013 impala lt with 63000 mi gave this message, engine not hot, no ac, and radiator fans were on temp gauge at lowest spot. as noted here , i rebooted the system .battery disconnest ,and all was back to normal for a 3 hour trip. anybody know whats going on? thanks for your considerstion. Like.1) Faulty Engine Control Unit. Although rare, the Engine Control Module (ECM) may act up and cause false temperature gauge readings. If the ECM can't detect a change in the voltage signal from the sensors due to damage, it can't effectively control the dashboard temperature gauge or the radiator fan.The original Thanksgiving was very different to the way it is celebrated now. Find out more about Thanksgiving with this HowStuffWorks quiz. Advertisement Advertisement Advertiseme...Aug 24, 2023 · What Does Engine Hot Ac Off Mean? Imagine that while driving down the interstate, your car suddenly flashes the warning, “Engine Hot AC Off.” It can be very frustrating for you! Your car’s dashboard displays the warning “Engine Hot AC Off” if the engine’s temperature has increased to the point where it needs to be fixed right away ... Engine hot AC off is the warning by the vehicle to keep the temperature in the recommended ranges. If the alarming engine light appears with the message, it means the engine is overheating and requires it to cool down by any means. Shut off the engine as soon as it returns to the regular thermostat. To reset it, turn on the engine to ensure the ...The AC being off due to high engine temperature symbol means the PCM detects too much heat in your engine or the electric cooling fan stopped working. The A/C is turned off to avoid overheating. Here’s what to look out for when your car displays AC off due to high engine temp: Coolant level for leaks. Worn radiator.

Verified. HiCustomer. If your temp gage does not work and this light is coming on, then you have either a bad sensor, bad wiring, or bad pcm. The pcm sends the signal to the ipc to turn this light on if the engine temp gets too high. The best thing to do is to take it to a local parts store that will scan your truck for codes for free.

Engaging the ignition switch is necessary to reset the Engine Hot AC Off warning effectively. Step 2: Wait for a Few Minutes. Allow the engine to cool down for a few minutes. This step will give the engine time to dissipate any excess heat and reduce its operating temperature.What Does AC Off Due To High Engine Temp Mean? A car's AC is off due to a high engine temperature symbol when the PCM detects an excessively heat engine or malfunction in the cooling fan. The car's computer system turns off the AC to reduce the engine's pressure and prevent it from overheating. ... But a too-hot engine can prevent the AC ...What "Does Engine Hot, AC Off" Mean? Your Chevy Impala displays the "Engine Hot, AC off" alert when the electric cooling fan fails. The car engine overheats when the cooling fan and other cooling system parts malfunction. The engine requires enough power to run the AC and other systems. When the fan fails, the AC goes off to reduce the load on ...how to reset engine hot ac off. With the engine off, remove the ECM fuse for approximately 10 seconds. After the brief pause, reinsert the fuse. Start the engine and monitor the temperature gauge. Ensure it rises to a normal level, around 210 degrees. Check the AC functionality by turning it on.The AC turns off due to high engine temperature, providing a safe operating condition. When the engine temperature rises above a certain threshold, the …In contrast, major repair costs range from $500 or more depending on the part that needs to be fixed. Major repairs include issues on the water pump, radiator, head gasket, and engine block. Recruiting a mechanic to fix the leak could cost you up to $300. The regular cost of a coolant leak repair hits around $700.The dash read out says "Engine overheating, Shut off A/C". The temp needle is at 260. Car sat for ten minutes. Started up and temp at 180. Left A/C off and no problems. Then to test the next day, I drove 5 minutes with A/C on, same problem again... so I watched the gauges as it happened. Temp was steady at 180 for the first 5 minutes, then just ...A seized water pump: Another possible cause of an overheating engine is a seized water pump. The water pump circulates coolant around the engine, and if it seizes up, then coolant will not be able to flow properly and the engine will overheat. 5. A damaged radiator hose: The final possible cause of an overheating engine is a …Wendy E Discussion starter. 1 post · Joined 2021. #1 · Dec 18, 2021. i have a 2012 Traverse. i have loaned it to my mother, she drove 800 mile round trip and had no problem with it. i have loaned it to my daughter who drove 30 miles one way and has engine hot ac off come on. after she drops it off i drive it for about 10-15 and i goes off.

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Cold engine test: Open the hood and remove the radiator cap. Start the engine. Observe coolant action by looking down into the radiator. The fluid should not be moving. When an engine is cold, the thermostat should be closed, thus bypassing the radiator. Warm (not hot!) engine test: Open the hood and remove the radiator cap. Start engine.From a cold start, monitor the coolant temperature and the intake air temperature sensors, they should be within 5 degrees of each other. 2. If either is off, verify the ground is good and the 5 volts to the sensor is good. (See attached documents) 3. Replace the sensor that reads incorrectly and retest.Replace large duct between air filter and throttle body and the smaller hose on the side of the large duct. Turn on heater to high/hot. Start and idle till full temperature. Look for fluid flow from smallest hose into the coolant reservoir (If reservoir is clean, you can see it splashing on the inside top of reservoir.06 chevy monte carloe 3.9l engine hot a/c off on dic. iat @ 80 cts @ 80 ambient air @ 32 until starting of engine. then 80 also found a p0128 code … read more relicdigger3It means that your engine is running too hot. Your car's AC works when the windows are down to move air through the cabin of your car to cool you off, meaning that it won't work if the engine is too hot for the fans to push any air over it. If this happens, turn off the car and let it cool down before turning it back on.The panel is telling me that the AC is turn off because the engine is over heated. but when I check the water (Coolant) all appears to be in order. Their are no leaks of any kind any where, there is n … read moreWhen the car’s engine computer turns off the AC because of an overheated engine, you’ll notice that the engine temperature gauge keeps fluctuating. You can locate the engine temperature gauge in the driver’s cluster. However, many modern car models have warning lights instead of gauges. What causes AC off due to high engine temperature?Of course you do! If the AC is not resetting itself. Then there has to be a reason. And that reason is because you have little or No Freon in your system. You have a leak my friend. You have to go to a authorized repairman on these guys because the Old Freon that's left has to be vacuumed out and stored for disposal. It is for the Ozone.If this happens to your Accord, you might have a problem that needs fixing. The common culprits are the temperature sensors (your car has two), which are the fan switch and the fan timer module. This article will discuss the three reasons why your fan might continue to run, even after the car is shut off. Figure 1.The most common reasons why your lower radiator hose is cold are a faulty thermostat, a bad water pump, or a low coolant level. It can also be caused by airlocks or a clogged coolant system. Here is a more detailed list of the six most common causes of a cold lower radiator hose: 1. Faulty thermostat. This is the most common problem when it ...Jan 25, 2024 · AC turns off due to high engine temp as a safety feature to prevent damage. Overheating can be caused by cooling system issues like faulty thermostat or low coolant. Check temp gauge first to confirm overheating. Then inspect cooling system parts like radiator, water pump, thermostat to find the root cause. ….

Typically, a P1258 will cause the engine to run poorly as the PCM disables injectors at random in an effort to lower the engine temperature. Is the engine overheating, or is this code present at all times. If the coolant is being read as over 270 degrees (F), this engine protection mode is activated.They generally turn off the AC, turn the fans on and some times send a richer fuel mixture. 14 people found this helpful. Mark helpful. 260. GuruL2TD1 answered 4 years ago. What is causing my 2008 Pontiac torrent 3400 v6 to show running hot in the dash it says reduse power engine power off air power off and show hot for just a minute then temp ...Either way, low coolant pressure is going to lead to an overheating engine. 9. Low Oil. This is a very rare issue, but it can absolutely happen! Oil has several properties, but one of the critical ones is cooling. Without enough oil, engine components will create a lot more friction, which heats everything. If it gets too hot, your engine can ...I'm getting a message "engine hot AC OFF" , no temperature reading on the dash, CEL on, fans on, even when engine is cold and usual P0116 DTC. The scanner reads the correct coolant temperature, the car is NOT overheating, coolant level OK. Also, the engine runs like crap and starts with difficulties (normal, since reach mixture is injected).10 posts · Joined 2011. #1 · Dec 19, 2011. I'm new to the forum but I see my problem isn't. Friday evening, wifey arrives home and as she's pulling into garage, 2008 Outlook starts running rough and she sees the "Engine Hot, A/C Off" message on the dash cluster. She turns off vehicle and tries to restart but it won't.correct. And the a/c clutch doesn't activate. yes. The AC will be locked out when the engine hot message appears. This si 100% normal. Does not mean AC problem. It is just a setting built into computer,. I am thinking you have a bad ECT or engine coolant temp sensor problem.Engaging the ignition switch is necessary to reset the Engine Hot AC Off warning effectively. Step 2: Wait for a Few Minutes. Allow the engine to cool down for a few minutes. This step will give the engine time to dissipate any excess heat and reduce its operating temperature.Why does it say engine hot a/c off and the engine light is on but car not hot . 2008 Chevrolet Impala. Asked by Deedle 67 in Elgin, IL on . November 20, 2016. Every time I start my car the senor light says engine hot a/c off but is not hot ,then the engine light came temperature gauge does move ,and it blows good heat .For a 2.4 litre engine, where the pressure cap is that is the thermostat housing..if you try to remove the pressure cap (in cold temperature only) you will see the thermostat..A damaged thermostat ... Engine hot ac off what does that mean, The AC is off due to the high engine temperature symbol means that the PCM (Powertrain Control Module) detects too much heat in your engine, or the electric cooling fan has stopped working. The A/C is turned off automatically to prevent overheating. The PMC is used to monitor your engine’s temperature, and if it detects an increase in ..., So here is my experience. My 2013 Acadia with 74000 miles was fine, temp at 210 then all of a sudden temp gauge dropped to 160 and a message on the dashboard came on "Engine Hot AC Off", the engine ran a little rough, "check engine" light came on and the fan ran at full speed, which make the car seem like it stayed ruining when you turned the ..., A warning light keeps... A warning light keeps coming on saying engine hot AC off. Hello, something is providing data to share that there is something overheating the engine. This could be a real situation, or a sensor reading erroneously. As serious damage can occur with an overheating engine, I would err on the side of caution and find out ..., When talking about electrical current, AC stands for “alternating current” and DC stands for “direct current.” Alternating current is the type of current that comes from a power pl..., What Does Engine Hot AC Off mean? The Engine Hot AC Off warning light indicates that the car’s electric cooling fan is malfunctioning, and as a result, the engine is running hot or overheating. Notably, overheating is the top cause of engine deaths globally. Thus, you should take immediate action when … See more, ENGINE HOT TURN A/C OFF. Cooling System Description and Operation. ENGINE COOLANT HOT. The instrument panel cluster (IPC) displays ENGINE COOLANT HOT message when the IPC receives a class 2 message from the powertrain control module (PCM) requesting illumination of this driver warning. ENGINE OVERHEATED., If the temperature sensor is not functioning properly, it can cause the “Engine Hot AC Off” warning light to appear. For example, if the temperature sensor is not providing accurate readings, it can cause the AC system to malfunction. This can result in the AC system not cooling the air effectively, or it may cause the AC system to turn off ..., It is known that the temperature sensor on many vehicles, including the Chevrolet Cruze, can get damaged or dirty over time. If this happens, it will not send the correct signal to the vehicle’s computer and this may cause an “ac off due to high engine temp” message on the dashboard. A Chevy Cruze has two temperature sensors that are ..., When i first start my truck and know the engine is not hot. "Engine hot ac shut off" appears. Whats going on with this? Report. 2007 Chevrolet Silverado 1500 38,000 mi, Visitor. Engine hot a/c turned off. Replaced all kinds of stuff cuz engine not hot. Replaced thermostat, fixed problem. Report., Yes, it's empty. Top off with distilled water if you can pick some up close by. If there's an auto parts store close by, pick up a 50/50 mix of Dexcool antifreeze and top off that tank, let it idle for ~10 minutes with the cap off, and top off anything that it drinks down. These cars are prone to coolant leaks in quite a few areas., Next, inspect the engine oil. The oil should be neither too dirty nor overly diluted. If the compressed oil is unable to lubricate the engine, it’s bound to overheat. So check the oil levels and the viscosity. Top it off or replace if necessary, depending on what the state of the oil is., Clogged Cooling System. A radiator or coolant passages that are clogged with dirt, corrosion, or debris can impede the circulation of coolant, leading to localized hot spots and eventual overheating. It may be good enough to handle the heat generated without the AC, but unable to keep up when the AC is on. , Nov 12, 2020 ... FIX IT WITH $ 35 2012 CHEVROLET chevy express 1500 V6 thermostat location., That "engine hot AC off" happens to me now and again, but it's always after I've driven it for a bit, let it sit, then start it up and go right away without it really warming back up. The truck is warm, the engine is warm, but the temp gauge hasn't moved. All I have to do to fix it is clear the code with my tuner and the temp gauge jumps up to ..., 1. Use a scan tool to clear the codes. If the ECTS or wiring is open, the "Engine hot, A/C off" message should return immediately. If so, replace the ECTS or check the sensor wiring for defects. However, if the code does not return immediately, this does not automatically mean the sensor is OK., I have a 2013 Traverse - got a warning "Engine HOt A/C Off". I have a 2013 Traverse - got a warning " Engine HOt A/C Off" and the temp gauge drops to cold. Took to the shop and they said it was a sensor and replaced it. It came back on last night. The car is not over heating and the engine isn't hot. Mechanic's Assistant: Have you checked the ..., Some codes do not turn on the check engine light on. Typically if the "engine hot/ a/c off " message is showing and the engine is not overheating then you will have a code P0128 code stored. This code will set if the engine does not reach normal temperature, meaning a bad thermostat or could be a computer calibration issue., If the computer reads a discrepancy between the water temp gauges it monitors, it will send that engine hot AC off message, and turn the cooling fans on high and enter limp mode to protect the engine. The temp gauge will not read, and/or be at 165 when the key is off. If your fluid levels are fine, bottom rad hose cool, it's probably a sticking ..., Chevy Mechanic: Dan. This usually means the thermostat has failed. When thermostat has failed the computer goes into fail safe mode, forces ac off, and temp gauge stops working. You should start by having diagnostic codes checked, if you are getting code P0128 then thermostat needs to be replaced., Preparing for the Joint Entrance Examination (JEE) Mains can be a daunting task for any aspiring engineering student. With competition at an all-time high, it is crucial to have an..., Your AC only seems to work properly when driving at high speeds. The air feels warm or not as cool when you're driving slowly or idling. Causes: The primary cause could be a faulty condenser or cooling fan. At high speeds, the natural airflow is enough to cool the condenser, but at lower speeds, the fan is needed., ENGINE HOT TURN A/C OFF. Cooling System Description and Operation. ENGINE COOLANT HOT. The instrument panel cluster (IPC) displays ENGINE COOLANT HOT message when the IPC receives a class 2 message from the powertrain control module (PCM) requesting illumination of this driver warning. ENGINE OVERHEATED., Trane AC model numbers have nine identifying letters and numbers, with each place in the line signifying a specific piece of information. For example, the first spot in the model n..., Cadillac CTS 3.6L V6 - The water in the water reservoir is mixed with what appears to be either engine or transmission oil. If it is transmission fluid it is likely the heat exchanger (or cooler) has sprung a leak. The cooler is often integrated into the main radiator bottom tank. If fluid is entering the cooling system it is possible coolant ..., The message 'engine hot ac off' on a Chevy Impala could indicate an issue with the engine's cooling system, such as low coolant levels, a malfunctioning thermostat, or a faulty temperature sensor. This can trigger the car to disable the air conditioning system as a precaution. It is important to check the coolant levels and address any ..., Next, inspect the engine oil. The oil should be neither too dirty nor overly diluted. If the compressed oil is unable to lubricate the engine, it’s bound to overheat. So check the oil levels and the viscosity. Top it off or replace if necessary, depending on what the state of the oil is., Question type: Maintenance & Repair. Our car keeps saying engine hot then below that. says a/c off. Also the tempreture gage is all the. way at zero.the heat works he have not had the ac. on in a while,it did this and took it in and the. mechanic replaced the thermostat it has been. normal after that, and now a week later its doing., It finally got that cold here about 2 weeks ago and my 2009 STS N* (non-V but the same computer and basic block design) started giving the "engine hot AC off message", the coolant temp gauge pegged to full cold and the fans go beserk. And the engine isn't hot. And the t-stat is Not sticking., 2007 engine hot/ac off. Shut the truck off get out check the engine, hoses are warm engine is warm coolant surge tank has coolant and is not venting. So engine is not overheating. Go to start truck will not start. I am thinking the ECM could not read a temp so went to fail safe mode that will not let it start., New Sensor Connector: https://amzn.to/2DMiWjJ -or- https://amzn.to/3kF5XRy -or-https://amzn.to/3fSapskThis video shows what finally worked to resolve the "E... , Another issue can be air flow. When the a/c is turned on, the radiator fan will typically turn on as well. first or all to provide air flow through the a/c condenser to provide you with cool air, and second to keep the engine temperature within range. If the fan is not coming on for any reason, the engine temperature will climb as well., SOURCE: 2001 Chevy Impala code P0118 what does this mean? The coolant sensor is bad,change it out,and bleed the air out of the cooling system,the cooling fans should come on on there own,and go off on there own,this is with the ac off.When the cooling fans do this,then it is cooling down correctly.If this was helpful,please rate,by the …, Apr 14, 2019 · The code that gets thrown out most often after the issue happens is BA222. It turns out the code is a GM specific code for "system anomaly". Basically, there are two temp sensors, one for the gauge and one for the ECM. After the truck is running for a short time while the outdoor air temp is very mild (in the upper 50s or lower 60s) the ECM ...