Dodge Ram Thermostat Problems - (2023)

Dodge Ram thermostat problems are common and can be caused by a variety of factors. The most common cause is when the thermostat becomes stuck in the closed position, preventing coolant from circulating through the engine. This can lead to overheating, as well as decreased fuel efficiency and performance due to reduced engine temperature control.

Furthermore, blocked or faulty cooling fans can also contribute to thermostat failure. To diagnose these issues, it’s important that you check your vehicle’s cooling system for blockages or obstructions. Additionally, if the issue persists after removing any possible blockages then replacing the old thermostat with a new one may be necessary in order to restore proper function to your Dodge Ram’s cooling system.

Dodge Ram owners may find themselves facing thermostat problems, which can cause the engine to overheat. This is usually due to a faulty thermostat or a clogged radiator that isn’t allowing enough coolant flow. It’s important to take your vehicle to a mechanic right away if you suspect this problem so they can inspect and replace parts as necessary.

In some cases, simply replacing the thermostat is all it takes; however, other underlying issues such as low coolant levels or dirty coolant can also contribute to overheating and must be addressed before driving again.

Signs of a Faulty Thermostat in your Ram.

(Video) Signs of a Faulty Thermostat in your Ram.

How Do I Know If My Dodge Ram Thermostat is Bad?

If you’re wondering whether or not your Dodge Ram has a bad thermostat, there are several ways to check. The most common symptom of a bad thermostat is an engine that runs too hot. You may also notice that the temperature gauge shows temperatures above normal when driving, or it takes longer than usual for the engine to warm up after starting it.

Other signs can include reduced fuel economy and problems with the heater and air conditioner in your vehicle. To confirm if your thermostat is indeed faulty, you should use an OBD-II scanner tool to connect directly to the car’s computer system and look at any error codes displayed on screen. If one appears related to the thermostat, then this confirms that it needs replacing.

What are the Symptoms of a Bad Thermostat?

A bad thermostat can cause a wide range of symptoms, which can vary depending on the severity of the issue. The most common symptom is when your furnace or air conditioning unit cycles frequently, running for short periods and then shutting off again before it’s had time to reach its target temperature. This can be caused by an inaccurate reading from the thermostat that always shows temperatures are higher or lower than they actually are.

Other signs include unusually high energy bills due to inefficient heating/cooling, loud noises coming from your HVAC system as it starts up and shuts down repeatedly without reaching its desired setting, inconsistent room temperatures throughout your home due to uneven distribution of hot/cold air in different areas, and strange odors like burning smells when you turn on the heat or air conditioning. If you experience any of these symptoms, contact a professional technician right away!

How Can You Tell If a Thermostat is Bad Without Removing It?

If you suspect that your thermostat is bad, there are a few steps you can take to determine if it needs to be replaced without removing it. First, check the thermostat’s power supply; make sure the batteries are not dead and that the circuit breaker has not been tripped. Next, ensure that all vents in your home are open and unobstructed so air can flow freely throughout the house.

(Video) Diagnose & Confirm this Coolant Overheating Problem! DodgeRam1500

Additionally, try adjusting the temperature on your thermostat up or down by several degrees to see if it responds properly. If these actions don’t work or if you have an older model of thermostat with no digital display screen, then you may need to remove it and replace it with a new one.

How Do You Know If Your Thermostat is Stuck Open?

If you suspect that your thermostat is stuck open, there are a few telltale signs to look out for. One of the most obvious indicators is if your engine continues to overheat even when driving at normal speeds and temperatures. This issue can be caused by the thermostat not opening up enough to allow the coolant to flow through it, resulting in an overheated engine.

Another possible sign of a stuck open thermostat is if your vehicle’s temperature gauge reads too low for an extended period of time, which could indicate that coolant isn’t being circulated as efficiently as it should be due to a malfunctioning thermostat. Finally, if you hear any strange noises coming from under your hood or notice steam exiting from underneath the radiator cap, then this may also point towards a faulty thermostat which requires attention.

Dodge Ram Thermostat Problems - (1)


Dodge Ram 1500 Thermostat Replacement

Replacing the thermostat in a Dodge Ram 1500 is an easy job that requires basic tools and only simple mechanical knowledge. The replacement process involves draining the cooling system, disconnecting several coolant hoses from the engine, removing the old thermostat housing and replacing it with a new one. It is important to use genuine OEM parts for this job as aftermarket parts may not be compatible or of sufficient quality.

Dodge Ram 1500 Thermostat Location

The thermostat on the Dodge Ram 1500 is located in the engine, near the top of the engine block. It can be accessed by removing a few bolts and then replacing them after installation of a new part. Depending on your model, you may need to remove additional components like air intakes or coolant lines to access it.

(Video) MYSTERY COOLANT LEAK- Changing a thermostat on a Dodge Ram V10

Be sure to consult your owner’s manual for instructions specific to your vehicle before attempting any repairs.

2013 Dodge Ram 1500 4.7 Thermostat Replacement

If your 2013 Dodge Ram 1500 4.7 is running hotter than normal, it may be time to replace the thermostat. Replacing the thermostat is a relatively easy job and can be done in just a few steps with basic hand tools. First, you’ll need to locate the thermostat housing which should be found near the front of the engine block on most Rams from this year.

Once located, remove any hoses or wiring connected to it before unbolting and removing the old unit. Next, install a new OE-specified thermostat into its place in reverse order of removal and reconnect all components that were removed earlier before refilling coolant levels as needed and starting up your vehicle for testing purposes.


In conclusion, it is clear that Dodge Rams can have thermostat problems. Although the cause of these issues may vary from vehicle to vehicle, common causes include low coolant levels and defective thermostats. It is important to check your coolant level regularly and get any suspicious noises checked out by a mechanic as soon as possible in order to avoid further damage.

Taking preventative measures now can help you save time and money down the road when dealing with Dodge Ram thermostat problems.

Dodge Ram Thermostat Problems - (2)


John Zayn Smith is a passionate truck enthusiast, writer, and expert in the automotive industry. Zayn's deep knowledge of trucks, their mechanics, and the latest industry trends makes him a valuable resource for truck lovers and professionals alike.

Starting his career as a truck mechanic, Zayn quickly developed a strong interest in all aspects of the trucking world. Driven by curiosity, he began exploring various truck models, manufacturers, and aftermarket modifications, which soon led to writing articles to share his expertise with fellow truck enthusiasts.

Zayn is a well-respected author on, where he provides in-depth articles and guides about trucks, their maintenance, and industry developments. When he's not writing or working on trucks, Zayn enjoys attending truck shows, off-roading adventures, and spending time with his family.

Follow Zayn on to stay informed about the latest truck-related news, tips, and insights from an industry expert.


(Video) How To Remove Thermostat on a 2009 Dodge Ram


Dodge Ram Thermostat Problems -? ›

Irregular Operating Temperatures

One of the most prevalent symptoms of thermostat failure is irregular operating temperatures. A stuck closed thermostat will cause engine temperatures to skyrocket, while a stuck open thermostat will cause an engine to run cool.

How do I know if my Dodge Ram thermostat is bad? ›

  1. Overheating And Overcooling. Overheating is the most common symptom of a failing thermostat. ...
  2. Coolant Leaking. If you have experienced problems with overheating or notice liquid dripping under your car, it is a sure sign of a coolant leak. ...
  3. Strange Sounds And Temperature Changes. ...
  4. Heater Problems.
Sep 19, 2022

What are the symptoms of a stuck closed thermostat? ›

Irregular Operating Temperatures

One of the most prevalent symptoms of thermostat failure is irregular operating temperatures. A stuck closed thermostat will cause engine temperatures to skyrocket, while a stuck open thermostat will cause an engine to run cool.

How do I know if my thermostat is sticking in my truck? ›

Look to see if the coolant is swirling/flowing immediately — that means the thermostat's stuck open. If the coolant doesn't flow after 10 minutes or so and continues to be stagnant after the temperature gauge indicates it's hot, the thermostat's likely stuck closed. Replace the radiator cap and turn off the engine.

How do you check if a thermostat is working? ›

Check the screen: Check the screen of the thermostat and make sure that it is lighted. A blank or unlighted screen could indicate a thermostat failure. Check the batteries: Many modern thermostats rely on battery power to operate. If the screen is blank or unlighted, a battery change could solve the problem.


1. How To Replace A Thermostat 2010-19 Dodge Ram 5.7L Hemi Pt1: Drain Coolant / OEM Thermostat Removal
(Keith & Kevin's Repair & Restorations)
2. 5.7 Hemi Cooling System Thermostat Diagnosis
3. Dodge ram 1500 4.7L over heating.
(G Auto Repair)
4. How to Test if Your Car's Thermostat is Working (Without Removing It!!)
(You Wrench)
5. Dodge Ram Hemi 5.7 Thermostat Mod | Coolant Flush Bleed & Trick
(Kevin Wilson)
6. P0128 Code What Is It And How To Fix It EASY
(Mopar Motorsports)


Top Articles
Latest Posts
Article information

Author: Kimberely Baumbach CPA

Last Updated: 27/07/2023

Views: 5782

Rating: 4 / 5 (61 voted)

Reviews: 92% of readers found this page helpful

Author information

Name: Kimberely Baumbach CPA

Birthday: 1996-01-14

Address: 8381 Boyce Course, Imeldachester, ND 74681

Phone: +3571286597580

Job: Product Banking Analyst

Hobby: Cosplaying, Inline skating, Amateur radio, Baton twirling, Mountaineering, Flying, Archery

Introduction: My name is Kimberely Baumbach CPA, I am a gorgeous, bright, charming, encouraging, zealous, lively, good person who loves writing and wants to share my knowledge and understanding with you.