Jeep Wrangler Thermostat Bad Symptoms & Replacement Cost

The Jeep Wrangler is a rugged and reliable vehicle, but like any car it requires regular maintenance to keep it running properly. One thing you may need to do from time to time is replace the thermostat. This article will tell you everything you need to know about Jeep Wrangler thermostat replacement cost so that you can be prepared when the time comes.

Car Thermostat Replacement Service & Parts Cost Chart

How much does a Car Thermostat Replacement cost?

On average, the cost for a Jeep Wrangler Car Thermostat Replacement is $200-250 with $70-90 for parts and $80-90for labor. Prices may vary depending on your location.

Jeep Wrangler ModelCost
1987 Jeep Wrangler$180-$200
1991 Jeep Wrangler$190-$200
1992 Jeep Wrangler$190-$200
1995 Jeep Wrangler$195-$210
2000 Jeep Wrangler$230-$240
2005 Jeep Wrangler$220-$230
2007-2018 Jeep Wrangler$230-$240

Symptoms of a Bad or Failing Thermostat

If your Jeep Wrangler is running hotter than normal, or if it’s taking longer than usual for the engine to reach operating temperature, it may be time to replace the thermostat. A faulty thermostat can cause all sorts of engine performance issues, and can eventually lead to engine damage if not fixed. Here are some common symptoms of a bad or failing thermostat.

  • Engine Overheating: A blocked thermostat causes engine overheating. A mechanic will evaluate the cooling system before blaming the thermostat for overheating. Since it’s unclear how badly the engine overheated, the mechanic will also check for a blown cylinder head gasket. In that case, the thermostat would be repaired.
  • Temperature gauge reads too low or too high: It is possible for thermostats to become stuck, causing the engine’s temperature to fluctuate. This problem will be signal to you by the temperature gauge installed on your dashboard.
  • Inefficient heating or AC system: There will come a time when every thermostat will fail. As a precautionary measure against a future cooling system failure, a new thermostat should be installed if the cooling system is already open for major repairs, such as water pump or radiator replacement.
  • Low radiator fluid level: The radiator fluid level is important for the life of your vehicle’s cooling system. When your vehicle runs out of coolant, it becomes hot, causing you to be uncomfortable and the vehicle to become less efficient.
  • Possible Leakages & Steam from the engine: When you are racing cars, the radiator gets hot. If the car overheats, the engine might leak steam. Sometimes, the car overheats and explodes.

Jeep Wrangler Thermostat Replacement Cost

The average cost for a Jeep Wrangler thermostat replacement is between $200-$250. This includes the cost of the part and labor. The exact cost will depend on the year and model of your Jeep as well as the location of the repair shop.

If your Jeep Wrangler is overheating, it may be time to replace the thermostat. This can be a difficult and costly repair, but it is important to keep your Jeep running properly. Here is a look at the Jeep Wrangler thermostat replacement cost and what you can expect to pay for this repair.

If you are having trouble with your Jeep overheating, it is important to take it to a qualified mechanic for an inspection. They will be able to diagnose the problem and recommend the best course of action. Replacing the thermostat is often the best option, but it is important to make sure that all other potential problems have been ruled out first. This will help ensure that you are not overpaying for the repair.

How long does a Jeep wrangler thermostat last?

A Jeep Wrangler thermostat has a ten-year lifespan. However, this is merely a rough estimate based on how long people typically keep their Jeep Wranglers.

If you live in a hot climate or do a lot of off-roading in your Jeep, you may need to replace your thermostat more often. Replacing a Jeep Wrangler thermostat is relatively easy and only takes a few minutes. The most important thing is to make sure you get the right size replacement for your Jeep.

Can you drive with a bad thermostat?

It is possible to drive with a malfunctioning thermostat, but you should avoid it. Having a defective thermostat can have a detrimental impact on your engine’s performance and efficiency. Problems such as overheating and decreased fuel economy can result from this type of installation. Replacement of a faulty thermostat should be done as quickly as feasible.

How do I know if my thermostat is bad in my Jeep wrangler?

If your Jeep Wrangler is running hotter than normal, or the engine is overheating, it could be a sign that the thermostat is bad. Another symptom of a failing thermostat is if the engine coolant temperature gauge isn’t working properly. If you suspect your thermostat might be failing, it’s important to have it checked out by a mechanic as soon as possible. Replacing a thermostat is usually not a very expensive repair, but if left unchecked, a bad thermostat can cause serious engine damage.

How to Replace Your Jeep Wrangler’s Thermostat

If your Jeep Wrangler is running a little hot, it might be time to replace the thermostat. This is a pretty straightforward job that anyone with basic mechanical skills can do. Here’s a step-by-step guide to replacing your Jeep Wrangler’s thermostat.

How to Replace Your Jeep Wrangler's Thermostat
  • Disconnect the negative battery cable.
  • Drain the coolant from the radiator into a clean container.
  • Remove the radiator hose from the thermostat housing.
  • Unscrew the thermostat housing and remove the old thermostat.
  • Install the new thermostat in the housing and screw the housing back on.
  • Reconnect the radiator hose and fill the radiator with coolant.
  • Reconnect the negative battery cable and start your Jeep Wrangler.

Jeep Wrangler Thermostat Replacement Tips

If your Jeep Wrangler is overheating, it may be time to replace the thermostat. This can be a relatively easy and inexpensive repair. Here are some tips to help you replace your Jeep Wrangler’s thermostat.

  • Before you begin, make sure that you have the proper tools and replacement parts. You will need a new thermostat, gasket sealant, and a socket wrench set.
  • To access the thermostat, you will need to remove the radiator hose from the engine. Use the socket wrench to remove the bolts that hold the hose in place. Once the hose is removed, you will be able to see the thermostat housing.
  • Use the socket wrench to remove the bolts that hold the housing in place. Be careful not to damage the gasket when removing the housing.
  • Once the housing is removed, you can access the thermostat. Remove the old thermostat and install the new one in its place. Be sure to use gasket sealant on both sides of the new thermostat to ensure a good seal.


Replacing the thermostat on your Jeep Wrangler is a pretty straightforward process that most people can do themselves. The cost of the replacement thermostat itself is relatively inexpensive, and you can save even more money by doing the job yourself. Whether you’re looking to save a few bucks or you just enjoy working on your own vehicle, replacing the thermostat on your Jeep Wrangler is a project that’s definitely within your reach.

How to Change The Thermostat In a Jeep Wrangler Video Guide

Andrea Barbuti
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