Ac Off: High Engine Temp Gauge Not Working – Troubleshooting Guide
The air conditioning in the vehicle is turned off because the engine’s temperature gauge is not functioning properly. This is likely a safety measure to prevent any potential engine damage due to overheating. It is important to have the temperature gauge fixed in order to properly monitor the engine’s temperature and ensure the AC can function without any issues.
Are you a car owner or driver who is experiencing issues with your air conditioning system? Do you find it frustrating when your AC turns off due to high engine temperature, and to make things worse, your engine temperature gauge is not working properly? If so, you’re not alone. Many car owners face this exact problem, and it can be a cause for concern.
In this blog article, we will delve into the topic of AC off due to high engine temp gauge not working, providing you with valuable insights and solutions to troubleshoot this issue. Whether you’re a novice car owner or someone more experienced with vehicle maintenance, we’ll guide you through understanding the functionality of the engine cooling system and help you cool your car effectively.
We understand how important it is for you to have a comfortable driving experience, especially during those scorching hot summer months. That’s why we’ve compiled a comprehensive guide that will address the main problem you’re facing – a malfunctioning engine temp gauge. By the end of this article, you’ll have the knowledge and tools you need to diagnose and resolve this issue, allowing you to enjoy a cool and comfortable ride once again.
Throughout this article, we’ll cover various subtopics, including the importance of the engine temperature gauge, common reasons for its malfunction, troubleshooting steps, and potential solutions. By providing you with a step-by-step approach, we hope to simplify and streamline the process of fixing your AC and engine temperature gauge. So, whether you’re ready to embark on troubleshooting your car problems or simply looking to enhance your understanding of vehicle maintenance, this article is for you.

- 【Compatibility】:This electric fan thermostat switch fits most vehicle engines, including 260 289 302 351W 347 352 360 390 406 427 428 429 460 351C 351M 400M 265 283 305 307 327 350 383 400 396 402 427 454 472 502 273 318 340 360 361 383 400 413 426W 440 455 330 326 Engine.
- 【Function】:This fan thermostat temperature switch kit is used to turn on the radiator fan when the coolant temperature reaches185 degrees and turn off the radiator fan when the coolant temperature drops below 175. Suitable for 10, 12, 14, and 16 inch fans, including dual fans.
- 【Specifications】:Includes 1 x 185/175 degree electric fan thermostat relay switch, size approx: 2.24 inches, thread size: 3/8 inches, come with hex nut, suitable for most vehicle cooling systems.
- 【High-Quality Material】:This AC fan switch radiator is made of high-quality copper material, sturdy, rust and corrosion resistant, ensuring maximum strength and wear resistance for long service life.
- 【Easy to Install】:This 3/8 inch NPT fan thermostat temperature switch is easy to install, you just need to turn off the engine first, wait for the water in the engine radiator to cool down to room temperature, then replace the new cooling fan temperature switch on it.
- 【Compatible Engine Models】: This fan temperature switch is compatible with a variety of car engine models, including 260, 273, 289, 302, 351W, 347, 352, 360, 390, 406, 427, 428, 429, 460, 351C, 351M, 400M, 265, 283, 305, 307, 327, 350, 383, 400, 396, 402, 427, 454, 472, 502, 318, 340, 360, 361, 383, 400, 413, 426W, 440, 455, 330, 326, etc., and includes dual-fan models
- 【Cooling and Temperature Control Function】: This automotive engine radiator temp sensor switch can maintain the coolant temperature between 175°C and 185°C. When the coolant temperature rises to 185°C, the electric fan thermostat switch automatically activates the fan for cooling; when the temperature drops to 175°C, the fan will shut off promptly. This promotes stable engine operation and provides a safe driving experience
- 【Durable and Robust】: The AC fan thermostat temperature switch is made of premium copper, which is rust-proof, corrosion-resistant, high-strength, stable in performance, sturdy and durable, and has a long service life
- 【Installation Instructions】: This electric motor cooling fan thermostat temperature sensor switch is easy to install. Simply turn off the engine and wait for the radiator to cool down before directly replacing the original fan switch. No complicated tools are required
- 【Specifications】: The package includes a 185 to 175°C fan thermostat temperature switch with a hex nut (3/8 inch thread). Compatible with automotive air conditioning fan thermostat temperature switches with 10-inch, 12-inch, 14-inch, and 16-inch fans
- High Quality: This electric cooling fan thermostat temperature switch is made of high-quality brass, which is corrosion-resistant, rust-proof, sturdy, durable, impact-resistant, and has high hardness, making it resistant to bending, deformation, or breakage, and ensuring a long service life
- Practical Functions: These engine temperature sensor switches can precisely control the engine temperature by automatically turning the fan on or off based on temperature changes, ensuring stable engine operation and extending engine life. This product is compatible with various single-fan and dual-fan engines, including 10-inch, 12-inch, 14-inch, and 16-inch models
- Easy to Install: This fan thermostat temperature sensor switch requires no special tools or complicated steps and can be easily installed. Simply turn off the engine and wait for the radiator to cool down before directly replacing the old or damaged original fan switch
- Wide Compatibility: This fan thermostat switch is widely compatible with a variety of engine models, including 260, 289, 302, 351W, 347, 352, 360, 390, 406, 427, 428, 429, 460, 351C, 351M, 400M, 265, 283, 305, 307, 327, 350, 383, 400, 396, 402, 427, 454, 472, 502, 273, 318, 340, 360, 361, 383, 400, 413, 426W, 440, 455, 330, and 326
- Product Information: This coolant fan switch comes in a single listing. Each piece measures 2.09 inches and comes with a 1/8-inch threaded hex nut. It’s a universal size design suitable for most vehicle models. Please check the product size specifications before purchasing to ensure compatibility with your vehicle
- 【High Accuracy】- Non-contact laser measurement and k probe contact measurement with dual laser point orientation and adjustable emissivity(0.1-1.0) for more accurate measurement, the laser thermometer gun can accurately measure the temperature of -40°F-3632°F (-40-2000°C) with a high accuracy of ±2% on average, and k probe measures At 14°F – 932°F temperature with a high accuracy of ±1.5% on average, you will get a more accurate heat measurement with this industrial alt thermometer
- 【50:1 longer distance + dual laser point】With 50:1 distance to point ratio, non-contact dual digital lasers for instant targeting, you can measure high temperatures, toxic or hard to reach objects, from a safe distance without getting too close to the heat source, instantly capture the hot spot and measure in just 0.5 seconds, ensuring convenience and high safety
- 【MULTI-FUNCTION PIROMETER】Measures with min/max/medium/dif. modes, allows you to set high/low/temperature difference alarms, alerts you if the temperature is above or below the set temperature for fast anomaly detection, unit switching(℃/℉), store data, the large and clearer screen with colorful backlight help you to get the work done in the dark
- 【High Temperature Infrared Thermometer】Extremely useful for professional high temperature testing for electrical, mechanical and climate industrial applications, predictive maintenance, hazardous sites and processes, high-quality grills, pizza ovens, furnaces, furnaces, furnaces, casting, metal casting, casting, aluminum alloy, ceramics, welding and asphalt, etc. The ir05a professional digital infrared thermometer is specially designed for objects
- 【High Temperature Infrared Thermometer】Includes 2 x 1.5V AA batteries to get you started as soon as you receive the thermometer. Auto shut off, low power indicator to extend battery life. Class II laser, optical power 1mw. Wavelength 620~690um If there are any technical or quality problems, please feel free to contact us and we will reply you within 24 hours
- 【Powerful Cleaning Performance】: This 3000W steam cleaner is equipped with 5Bar high-pressure steam and 150 ℃ steam temperature (180 ℃ core temperature), which can quickly generate steam within 40 seconds, effectively removing stubborn grease and achieving deep cleaning of car engines, kitchen surfaces, and tile gaps.
- 【Comprehensive Safety Protection】:Triple safety system includes dual temperature control, auto power – off overheating.retardant shell prevents electrical and overheating risks.
- 【Versatile Cleaning Tools】:Equipped with 6 major cleaning accessories and nozzles. The switchable dry/wet steam with adjustable pressure (4-5Bar) adapts to various surfaces, including car paint and hardwood floors, providing professional – level cleaning for car interiors, AC filters, sofa mites, oven grease, etc.
- 【Environmentally friendly and efficient cleaning】: Pure high-temperature steam provides powerful cleaning and protection, creating a safe and clean experience for families with children and cute pets. A single filling of 3.5L water tank can meet the cleaning needs of 2 cars and 3 rooms. Compared with traditional methods, the water consumption is reduced by 70%, which is more water-saving and environmentally friendly.
- 【Portable & Durable Design】:The stainless steel suits both indoor and outdoor use.Lightweight at 9.5kg and equipped with 3.5-meter-long power cord for large – space cleaning. Its impact – resistant construction ensures durability in harsh environments.
- No logo, 90 degree Elbow Reducer, ID 3″ to 2.75″ (76mm to 70mm), Leg Length 3.5″ (90mm), Made of High Temp Reinforced Silicone
- Temperature resistance: -76F to 482F (-40C to 250C)
- 80 PSI Maximum pressure rating
- 0.18inch (4.5mm) wall thickness. 3-ply polyester reinforcement construction
- Product meets SAEJ20 standard. Great for marine and industrial use, custom turbo or intercooler piping fabrication, DIY intake or radiator cooling system UV and ozone resistant
- No logo, Straight Coupler, ID 2.75″ (70mm), Length 24″ (610mm), Made of High Temp Reinforced Pure Silicone
- Temperature resistance: -76F to 482F (-40C to 250C)
- 200 PSI Maximum pressure rating
- 0.2inch (5mm) wall thickness. 4-ply polyester reinforcement construction
- Product meets SAEJ20 standard. Great for marine and industrial use, custom turbo or intercooler piping fabrication, DIY intake or radiator cooling system UV and ozone resistant
- No logo, Straight Reducer, ID 1.5″ to 1″ (38mm to 25mm), Length 3″ (76mm), Made of High Temp Reinforced Pure Silicone
- Temperature resistance: -76F to 482F (-40C to 250C)
- 80 PSI Maximum pressure rating
- 0.18inch (4.5mm) wall thickness. 3-ply polyester reinforcement construction
- Product meets SAEJ20 standard. Great for marine and industrial use, custom turbo or intercooler piping fabrication, DIY intake or radiator cooling system UV and ozone resistant
- A register fan designed to boost and improve existing airflow from register holes in home HVAC systems.
- Smart controller features 10-level speeds, heating and cooling triggers, and timer and cycle programming.
- Connect to our app via Bluetooth to unlock advance programs, set alarms & notifications, and view climate data.
- Premium anodized aluminum frame with CNC-machined detailing for a flush and clean appearance.
- FITS ONLY 4 x 10 in. REGISTERS | Rear Casing: 3.93 x 9.76 in. | Engine: Dual 92 mm | Airflow: 130 CFM | Noise: 17 Dba | Color: Bronze
- No logo, Straight Reducer, ID 1.25″ to 1″ (32mm to 25mm), Length 3″ (76mm), Made of High Temp Reinforced Pure Silicone
- Temperature resistance: -76F to 482F (-40C to 250C)
- 80 PSI Maximum pressure rating
- 0.18inch (4.5mm) wall thickness. 3-ply polyester reinforcement construction
- Product meets SAEJ20 standard. Great for marine and industrial use, custom turbo or intercooler piping fabrication, DIY intake or radiator cooling system UV and ozone resistant
Understanding the Engine Cooling System
Before delving into the issue of the AC turning off due to a high engine temperature and the malfunctioning engine temperature gauge, it’s essential to have a solid understanding of how the engine cooling system works. This knowledge will enable you to troubleshoot the problem effectively.
The Importance of the Engine Temperature Gauge
The engine temperature gauge is a vital component of your vehicle’s cooling system. It provides real-time information about the engine’s operating temperature, allowing you to monitor and maintain optimal conditions. When the engine temperature rises above the normal range, the gauge alerts you, indicating a potential issue.
Common Reasons for Engine Temperature Gauge Malfunction
There are several reasons why your engine temperature gauge may not be working correctly. Understanding these common causes can help you pinpoint the issue and take appropriate action:
1. Faulty Temperature Sensor
A faulty temperature sensor is a common culprit behind a malfunctioning engine temperature gauge. This sensor is responsible for sending signals to the gauge, indicating the engine’s temperature. If the sensor is damaged or malfunctioning, it may not provide accurate readings, leading to issues with the gauge.
2. Wiring Issues
Another potential cause of a malfunctioning engine temperature gauge is wiring problems. Damaged or loose wiring connections can disrupt the flow of electrical signals, impairing the gauge’s ability to display accurate temperature readings. Checking the wiring and ensuring proper connections can help resolve this issue.
3. Gauge Cluster Problems
In some cases, the issue may lie within the gauge cluster itself. A damaged or malfunctioning gauge cluster can prevent the engine temperature gauge from functioning correctly. If all other components appear to be in working order, it may be necessary to inspect and, if needed, repair or replace the gauge cluster.
Troubleshooting Steps for AC Off due to High Engine Temp
Now that you understand the importance of the engine temperature gauge and the common reasons for its malfunction, let’s explore troubleshooting steps to address the issue of the AC turning off due to high engine temperature:
1. Check Coolant Levels
One of the first steps in troubleshooting this issue is to check the coolant levels in your vehicle. Insufficient coolant can lead to overheating, causing the AC to turn off and triggering the engine temperature gauge. Ensure that the coolant reservoir is adequately filled and that there are no leaks in the system.
2. Inspect the Cooling System Components
Next, inspect the various components of the cooling system, such as the radiator, water pump, and thermostat. Look for any signs of damage, leaks, or blockages that may be hindering the system’s ability to regulate the engine temperature properly. Repair or replace any faulty components as necessary.
3. Test the Temperature Sensor
To determine if the temperature sensor is the cause of the issue, you can perform a test using a multimeter. Follow the manufacturer’s instructions to measure the resistance of the sensor at different temperatures. If the readings deviate significantly from the expected values, it may indicate a faulty sensor that needs replacing.
Potential Solutions for AC Off due to High Engine Temp
If you’ve followed the troubleshooting steps and are still experiencing issues with your AC turning off due to high engine temperature, consider the following potential solutions:
1. Replace the Temperature Sensor
If the temperature sensor is determined to be faulty, replacing it with a new one can resolve the issue. Consult your vehicle’s manual or seek professional assistance to ensure proper installation and compatibility.
2. Repair or Replace the Wiring
If wiring issues are identified as the cause of the problem, repair or replace the affected wiring to restore proper functionality. It’s important to exercise caution and follow proper electrical procedures when working with the wiring system.
3. Seek Professional Help
If you’re unable to diagnose or resolve the issue on your own, it’s advisable to seek professional help. A qualified mechanic or technician can conduct a thorough inspection of your vehicle’s cooling system and provide expert guidance on fixing the problem.
Dealing with an AC that turns off due to high engine temperature and a malfunctioning engine temperature gauge can be frustrating. However, with a solid understanding of the engine cooling system, the importance of the temperature gauge, and the troubleshooting steps and solutions discussed in this article, you’re well-equipped to address and resolve this issue.
Remember to prioritize regular maintenance and inspections to prevent future problems and ensure optimal performance of your vehicle’s cooling system. Stay cool and comfortable on the road!
Chevy Cruze AC Off Due to High Engine Temp
Frequently Asked Questions (FAQ)
Why is my AC not working?
What should I do if my engine temperature gauge is not working?
Can a faulty engine temperature gauge affect the performance of my AC?
Is it safe to drive with the AC off due to a high engine temperature gauge not working?
How can I prevent the AC from turning off due to a faulty engine temperature gauge?
Final Words: Resolving AC Shutdown Due to Engine Temperature Issues
In conclusion, when facing the issue of the AC turning off due to a high engine temperature and a malfunctioning engine temperature gauge, it is important to have a solid understanding of the engine cooling system. The engine temperature gauge plays a vital role in monitoring and maintaining optimal engine conditions.
There are several common reasons for the malfunction of the engine temperature gauge, including a faulty temperature sensor, wiring issues, and problems with the gauge cluster. To troubleshoot the issue, it is recommended to check the coolant levels, inspect the cooling system components for damage or blockages, and test the temperature sensor using a multimeter.
If these steps do not resolve the issue, potential solutions include replacing the temperature sensor and repairing or replacing the wiring. Seeking professional help from a qualified mechanic or technician may be necessary if the issue cannot be resolved independently. Regular maintenance and inspections of the cooling system are crucial to prevent future issues and ensure optimal performance.
Dealing with an AC that turns off due to a high engine temperature and a malfunctioning engine temperature gauge can be frustrating, but with the knowledge and steps discussed in this article, readers are well-equipped to address and resolve the problem. Remember to prioritize regular maintenance to keep the vehicle’s cooling system in top condition and enjoy a comfortable driving experience. Stay cool!
