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Jeep 3.6 Engine Problems: How To Fix It

A jeep 3.6 engine is one of the most common types of engines used in Jeeps. There are many different causes for this problem, including rocker arm failure, overheating, and cylinder head failure. In this article, we will discuss some of the common causes and how to fix them. This article also covers common problems related to the left bank cylinders. If you’re experiencing any of these problems, please contact your local Jeep dealership for more information.

Rocker arm failure

If you’re having trouble with your Jeep 3.6 engine, rocker arm failure may be to blame. Rocker arms are important parts of internal combustion engines, allowing the valves to open and close at the proper times. A problem with rocker arms can limit the performance of the engine and lead to diminished power and acceleration. Severe rocker arm problems can even result in the engine stalling or not starting at all.

In order to repair your vehicle’s rocker arms, you need to know what caused them to break in the first place. There are several causes of rocker arm failure, including bad fuel or oil or the wrong type of oil. You can do DIY repair or hire a professional to do the repair for you. But rocker arm replacement is a labor-intensive task that requires expertise and expensive equipment. The average cost of a rocker arm kit ranges from $100 to $500, depending on the model of your car.

The most common symptoms of rocker arm failure in a 3.6 Pentastar engine are a ticking noise from the engine’s upper area, as well as a fault code indicating a cylinder misfire. Repairing rocker arms is not a difficult process, but it may require the expertise of a skilled auto technician. Because of the complexity of the replacement, you should consider the cost of a replacement before proceeding with the repair.

The proposed class action alleges that Chrysler concealed the root cause of a 3.6L Pentastar engine defect, which caused it to fail prematurely. The manufacturer knew that this defect existed, but failed to inform consumers of its existence. Metal debris found in the engine oil and engine fluid could indicate a faulty rocker arm. This can lead to severe damage to the engine. The problem is so widespread that a class action lawsuit has been filed against FCA US LLC.


Overheating in Jeep 3.6 engine problems is not uncommon. Some owners experience this issue while driving. Some even say that their vehicles’ check engine light turns on and off. It could be the cylinder head itself. But what exactly causes this problem? Fortunately, there are several fixes. Listed below are some common causes of overheating in Jeeps. To start with, make sure you’re not running your vehicle at top performance.

Lack of coolant is another common cause of overheating. While Jeeps should always use a quality coolant, it’s also important to flush out the cooling system on a regular basis. You can use Mopar 68048953AB Standard HOAT Coolant and Antifreeze, but keep in mind that this coolant is only good for a short period of time. Also, flushing out the cooling system is one of the most important maintenance procedures for a Jeep.

A rocker arm failure is another common problem for a 3.6 Pentastar engine. It is the most common cause of a Jeep check engine light and misfire. This problem is not a particularly costly repair, but it requires a highly skilled auto technician. Additionally, the labor costs can add up. As a result, it’s essential to find an auto repair shop that offers a warranty on the cylinder head.

Another cause of overheating in Jeep 3.6 engine problems is a leaking cooling system. Leaks can occur in a variety of places, including hoses, radiator, water pump, thermostat housing, heater core, head gasket, and freeze plugs. Dirt from an old coolant can block the coolant hoses, preventing the coolant from dispersing heat properly. To resolve this issue, you must take your car to a mechanic.

In one case, the oil filter cap was overtightened, causing an oil leak. The vehicle had just 28,000 km and only six oil changes. The leak happened on a minus 27 Celsius winter day. The car is still at the dealership, waiting for a repair. However, some vehicle owners are faced with months or even years of downtime. And if the engine has already been damaged, it will take much longer to repair.

Cylinder head failure

If you own a Jeep 3.6 engine, you know all too well about the common problem of cylinder head failure. Although the 3.6 engine has only a few cylinders, the jeep has become a popular brand in Australia. In fact, if you own a 3.6 Jeep, chances are, you’ve spotted a few on the road. And if you’ve never driven one, you’ve probably wondered what causes misfires in the 3.6 engine.

Luckily, there are some simple symptoms that may indicate a bad cylinder head. For starters, you’ll notice a loss of coolant in the engine compartment and white smoke from the exhaust. You may also notice bubbles in your coolant overflow bottle and radiator. Your vehicle may also have a milky residue on the oil dipstick, which means the cylinder head has failed. Thankfully, Chrysler Group has been sending replacement cylinder heads to Jeep dealerships.

This problem is caused by a flaw in the sand casting process that causes the heads to prematurely fail. Most early models of this Jeep are still covered under a manufacturer’s warranty, but you should still check if your vehicle is covered under one. The 3.6 Pentastar engine is in production since 2012.

The easiest way to diagnose cylinder head failure is to look for coolant leaking from below the exhaust manifold. In this case, a failing head gasket has allowed water to leak from the water passage both internally and externally. In fact, the coolant may even leak into the hot combustion chamber. If it’s not noticed for a while, the engine may be able to continue to run.

The cylinder head rocker arm problem is often mistaken for a cylinder head failure problem. The rocker arm problem is a common cause of misfires in a Jeep 3.6 engine, but it’s not a symptom of cylinder head failure. If you notice a ticking noise in the engine, it’s most likely the problem. A trouble code can also indicate the problem.

Overheating causes left bank cylinders

Overheating can lead to engine failure in Jeep 3.6-liter models. The left-side cylinder head can fail prematurely, which leads to a ticking sound. The company has extended the warranty on affected vehicles to 150k miles. Unfortunately, the change does not fix the underlying problem. Owners have reported overheating issues and multiple engine repair bills. While the Jeep manufacturer is still investigating the problem, owners should contact their dealerships as soon as possible.

The problem is most prevalent in early models of the Pentastar V6. Overheating of the valve seats in cylinder #2 results in the cylinder head failure. The automaker cured the problem by replacing the valve guides and seats with hardened metal, but this did not cure the underlying problem. Nevertheless, Fiat Chrysler did not resolve the issue until mid-2013, when the company announced an extended warranty for owners of 3.6-liter Pentastar engines.

In some cases, the cylinders in the left bank of a Jeep 3.6 engine may begin to overheat due to extreme fuel pressure. The gas will then flow into the cooling passages, which cannot transfer heat well. The problem can cause additional engine wear because coolant does not transfer heat as well as oil. In this case, the automaker suggests you visit a mechanic for a diagnostic test.

The underlying cause of overheating caused left bank cylinders in Jeep 3.6 engines is overheating. The second cylinder may also be affected. In any case, this issue is costly and should be addressed immediately. Jeep customers should avoid ignoring the warning signs and visit a mechanic immediately. When overheating causes left bank cylinders in Jeep 3.6 engine problems, they should immediately stop driving their vehicle.

In some cases, if a 3.6L cylinder head fails, it is a more expensive solution. In these cases, a new cylinder head can be installed. If a repair is required, the car’s warranty period will extend. In some cases, repair costs are so high, a new engine can be costly. However, if you’re still under warranty, it’s best to wait until after the warranty period to see whether the problem is solved or not.