5 Major Jeep Liberty 3.7 Engine Problems With Fixes

Frank Boyd
Jeep Liberty 3.7 Engine Problems

Today we will discuss about Jeep Liberty 3.7 Engine Problems

One of the famous SUV models, Jeep Liberty has wooed several customers around the globe. The features of this automobile speak volumes in its favor. There is no doubt that over the years, there have been many enhancements in the functioning of Jeep Liberty.

The engine of the Jeep Liberty is identical to the engine of Chrysler vehicles. Different variants of Jeep itself feature this engine.

However, these enhancements don’t seem to be creating an impact on the lives of users of Jeep Liberty since they have to face some Jeep Liberty 3.7 Engine problems.

Issues with Previous Models of Jeep Liberty

According to Consumer Reports, the Jeep Liberty 2008 model had a little margin of improvement in terms of driving. The engine created considerate noise that was a huge distraction for the drivers.

It was way less efficient in its performance as compared to other models. The engine consumed extra fuel as well. The internal space or cabin is congested and lacks quality.

Another analysis regarding Jeep Libert 2002 model from the same platform tells that the driving is jarring. The cabin also had similar issues as of 2008 Jeep Liberty engine problems that were earlier rectified as soon as the company received the complaints.

The overall navigation of the car was not a cakewalk at all. The engine was producing too much noise. Different trials were conducted on the engine to reduce its noise production but the tests failed and things did not turn out as desired.

Jeep Liberty 3.7 Engine Problems

Jeep Liberty 3.7 Engine Overview

As discussed earlier, this Jeep model’s engines have been observed many times by the technicians. But something was getting missed out over and over again. Since the customer feedback was not encouraging for the company at all.

There have been many attempts of upgrading the engine. However, the reliability of the engine remained untouched. The design of the engine is similar to 4.7L which is 286.7 ci V8.

The only difference is that the standard 3.7 engine works with 5-6 cylinders, unlike the 4.7L engine. The block attached to the engine is crafted from commercial-grade iron and makes a right angle (90 degrees) in the middle of the cylinder banks.

It is a former design of the engines of Jeep Libertys. These cylinders are of aluminum and each of them contains 2 valves. The camshafts are also present on the structure of these cylinders.

The issues reported by the owners were the power of the engine in bigger SUVs. The acceleration of the Jeep Liberty is also slower than expected.

Due to these reasons, this post will further shed light on the major problems caused by this engine in the next section.

Also Read: Kawasaki KRX 1000 problems with fixes

Major Jeep Liberty 3.7 Engine Problems

It is better to learn about the most reported issues of this engine from the owners. So that it will get easier to be well aware of these problems that can be addressed in time to avoid huge losses in the future.

Below is the detail of 5 issues caused by this engine 286.7 ci:

1.   Dysfunctional Valve Seats

There are special valve seats present in Jeep Liberty. The location of these seats is always on top of the cylinders. A particular metal in form of fine powder is used to produce these valve seats.

Owing to the frequent utilization, these valve seats can augment. Due to a larger size, the piston gets compromised due to friction since these are closer to the valves.

The defective valve seats can become a huge nuisance for drivers since these can get dangerous if the problem starts to prevail. The valves might also break due to unhandled friction and mechanical attrition. The SUV can also fail regarding its functions.

In case, if the valve seats are damaged then these need an immediate replacement before it gets too late. Repairing costs can also increase due to a bigger problem.

2.   Piston Ring Landings Issues

These are another important component of Jeep Liberty’s engine. The prototypes of these piston rings are not standard to completely rely on. Due to this reason, the engine of this SUV gets extremely hot due to frequent driving regularly.

The issue gets bigger when it comes to the drain holes present in the head and block areas. If these are smaller then the engine produces gunk and gets further deteriorated due to the accumulation of harmful engine sludge.

There are different conduits and small channels present in the engine. These are more likely to get filled with this sludge. Due to this reason, the engine cannot consume sufficient oil.

The engine falls short of performance due to overheating and oil deprivation. In the case of last-stage failure, the engine needs a quick alteration. Also, to bring to your notice, it is among the 2002 Jeep Liberty engine problems.

Two factors that can help prevent further damage are intermittent engine check-ups to detect any blockages and temperature regulation to avoid overheating.

3.  Failure of Power Window Motor

It is a crucial counterpart of the window system of a car. Its job is to navigate the regulator of this system. The function of a regulator is to move the windows in an upward and downward direction.

In absence of these regulators, the windows become jarring in terms of their smooth movements. There is a dedicated switch that automatically controls the movements of windows. In some cars, there is a manual regulator for the same purpose.

During winter, there is a visible build-up of snow that blocks the window system. Due to the existence of this buildup the windows cannot move in a smooth way.

It compromises the motor and overheats it as well. The motor can get extremely compromised due to this and might need a replacement too.

The power window motor can also be fixed through a definite process mentioned in the discussion of 1A Auto. A reliable method that quickly rectifies your jammed window problem!

4.  Power Door Lock Fluctuations

This feature is a typical one in different variants of SUVs. The feature started its journey from the series of First-generation Jeep Libertys and still. There are specified actuators that render this door-locking feature.

So that the users can easily open and close the doors with just a single press of an automated button. There are some symptoms that indicate when there are problems arising with the power door lock.

One major indication is when it creates a loud noise. The second one is obvious! You press the button but the doors won’t get locked! It is not true that this issue can only be faced by only one door.

Instead, it can happen to all the doors. If one door is acting up due to this issue then it’s most likely due to electrical fluctuation.

However, rectifying the noise would require mechanical assistance on an immediate basis. Sometimes binding panels also need adjustments to fix the power door lock issue itself.

5.  Exhaust Manifold Leakage

All types of engines have an exhaust manifold system that gathers all the combustion gases from the functional cylinders and throws them out in the direction of the tailpipe.

If we talk about Jeep Liberty from First-generation, it has a V6 engine that comes with two banks in total. Both of these banks have their own exhaust manifold system. The location of these manifolds is close to the engine. It means these are always in contact with the engine.

Due to the heat of the engine, these manifolds become larger in size due to expansion. Similarly, when the engine is not working, the manifolds compress and become smaller in size.

Due to frequent expansion and contraction, the manifolds can break. It was a major issue that prevailed in the Jeep Libertys from 2002 to 2007. There is a special frame that holds these manifolds closer to the engine.

It has further counterparts like studs, nuts, screws, and bolts. Due to repeated contraction and expansion, this frame can undergo damage and thus leads to abrasion of manifolds as well.

These were the common issues that come with Jeep Liberty’s engine. No doubt there have been many admirers of this SUV for the company. But complications that are caused by this engine cannot be ignored.

The company is also trying to make attempts for the rectification of these problems individually. So that it would upgrade the lives of the owners by all means possible.


How is the performance of the Jeep Liberty 3.7 engine?

Jeep LIberty’s reliability is unparalleled for the owners. However, there are some common problems with its engine that owners need to get aware of before purchasing the SUV.

How many miles Jeep Liberty 3.7 can cover?

Jeep Liberty has the ability to cover a range of 200,000-400,000 miles in total.

What is the life length of the Jeep Liberty?

This extraordinary SUV serves the owners for 15 years maximum with uncompromised performance.

What type of engine is in Jeep Liberty?

The engine in Jeep Liberty is a 3.7L PowerTech 286.7 ci V8.

Winding Up

The presence of Jeep Liberty has made hundreds of lives easier with its mileage, performance, and reliability. Issues with its engines are tangible. However, attempts are being processed to address these problems as soon as possible.

This post included five common downsides of its engine that were called out by the owners. So that others can learn about them before becoming a victim of these on a happy road trip with their friends and family.

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