Signs My Car’s Thermostat Is Bad

AMJ Auto Repair • December 10, 2022

The thermostat plays an important role in your vehicle’s cooling system. It keeps track of the engine’s temperature so it knows when to allow coolant into the engine to prevent it from overheating. On average, a thermostat will go bad after approximately 10 years of service. For most people, this means you have 100,000 miles or more on the odometer. If you have any of the following problems with your automobile, head straight to our auto repair shop so we can replace the thermostat.

Corroded Thermostat Housing

If your vehicle is an older automobile, it would behoove you to inspect the thermostat to see if it is corroded. The thermostat is protected by a metal housing that can get rusty if coolant is seeping out of the thermostat valve. Unfortunately, this corrosion will eat through the housing and then the thermostat. It is important to replace a corroded thermostat right away.

Leaking Coolant

Failure to do so could leave you with leaking coolant on the garage floor. You can tell that the fluid on the floor is coolant by comparing its color to the color of the fluid in the radiator overflow reservoir. You can also check the coolant level in the radiator when the engine is cold. Only do this when the engine is cold. If the coolant level is low in either the radiator or the reservoir, it’s safe to assume that the fluid spots or puddles on the garage floor are coolant from the cooling system.

Erratic Temperature Changes

You will definitely know that the thermostat is having problems if your temperature gauge needle moves up and down on the dashboard. This is a sign that the thermostat is confused as to the engine’s temperature and is releasing coolant at the wrong times. Unfortunately, this will continue until you replace the malfunctioning thermostat. We can do that at our shop.

Overheating All the Time

Finally, your engine may also start to overheat all the time if the thermostat is bad. In severe cases, the thermostat can stop working and, as such, fail to send coolant to the engine. Consequently, your engine will overheat quickly and constantly. Do not drive your vehicle when your engine is overheating. You could cause additional engine damage.

Give us a call to schedule an appointment for your automobile if you are having any of the problems discussed in this blog post. We will replace the thermostat if it needs it.

By AMJ Auto Repair March 10, 2025
As the weather starts to warm up, it’s crucial to ensure that your vehicle is in top condition to handle the changing conditions. Proper maintenance and checks can help prevent breakdowns and keep you safe on the road. Here are some essential auto repairs to consider as the weather gets warmer: 1. Check and Change...
By AMJ Auto Repair February 10, 2025
When winter hits and temperatures drop, your car’s electrical system has to work harder to provide power to all its components. The alternator plays a crucial role in keeping your car running smoothly, especially in cold weather. If your alternator fails during the winter months, it can leave you stranded in the cold. Here are...
By AMJ Auto Repair January 10, 2025
It’s that time of year again, when the temperatures drop and you rely on your car’s heating system to keep you warm and comfortable during your travels. However, if your car’s heating system is not functioning properly, it can make for a miserable and chilly ride. In this comprehensive guide, we will take a closer...
By AMJ Auto Repair December 10, 2024
As the winter season approaches, it’s crucial to ensure that your vehicle is in top condition to withstand the colder temperatures. One of the key aspects to focus on during this time is your engine. Cold weather can take a toll on your vehicle’s engine, leading to potential issues if not properly maintained. In this...
By AMJ Auto Repair November 10, 2024
In the world of auto maintenance, alignment services are often overlooked by many vehicle owners. However, proper wheel alignment is crucial for the overall health and performance of your vehicle. In this comprehensive guide, we will delve into the importance of alignment services for your vehicle and why regular alignments are essential for maintaining optimal...
By AMJ Auto Repair October 10, 2024
As a vehicle owner, you understand the importance of maintaining your car in top condition to ensure a safe and comfortable driving experience. One crucial aspect of your vehicle’s performance and overall safety is the suspension system. Your car’s suspension plays a vital role in keeping your vehicle stable on the road, providing a smooth...
By AMJ Auto Repair September 10, 2024
Brake repair is a critical aspect of vehicle maintenance that ensures your safety on the road. Your braking system is responsible for allowing you to slow down or stop your vehicle, making it one of the most important systems in your car. Regular brake inspections and timely repairs can prevent accidents and costly repairs down...
By AMJ Auto Repair August 10, 2024
Routine oil changes are essential for maintaining your vehicle’s engine health and performance. Engine oil lubricates the moving parts, reducing friction and preventing overheating. Over time, oil can become contaminated with dirt, debris, and other particles, which can cause significant engine damage if not changed regularly. By sticking to a regular oil change schedule, you...
By AMJ Auto Repair July 10, 2024
Auto diagnostics are a fundamental aspect of maintaining your vehicle in top condition. This process involves using sophisticated diagnostic tools to read and interpret data from your vehicle’s onboard computer system. These systems provide invaluable insights into the status and health of various components, enabling technicians to accurately diagnose and resolve issues. Responding To The...
By AMJ Auto Repair June 10, 2024
One of the most critical components of keeping your vehicle running smoothly is your car’s battery. Your car won’t start without a functioning battery, leaving you stranded and frustrated. That’s why it’s essential to understand the importance of new battery installation services offered by reputable auto repair shops. Reliable Power Source A new battery gives...
More Posts