Dodge Ram 6.4 Hemi Problems (Major and Common Issues Solved)

Ram 6.4 Hemi Problems are the same as the common problems of other engines. An engine creates inertia to move vehicles. We can consider it as the basic block of any operating vehicle.

Various engines are manufactured every year with improved mileage and advanced features. But Ram 6.4 Hemi engine is the most consistent and popular engine of all time.

Its unique chamber design is the main reason behind this popularity. Ram 6.4 Hemi engine works on a hemispherical combustion technique that increases the displacement with VCT.

Being one of the legendary Ram engines, it is completely dependable. But we know nothing can be perfect.

There are some common problems in Ram 6.4 V8 engine that are irritating but easy to solve.

In this article, we will cover all such problems including their causes as well as solutions. You will also get to know about some of its incredible specifications like mileage and horsepower.

Related Guide > How to Maintain Your Dodge Ram?

Is the 6.4 Hemi a good engine for towing?

Engine horsepower, towing features, and torque capacity of an engine are combined to calculate its towing capacity.

An engine that has high torque capacity and good horsepower is considered to have a high towing capacity as well.

After reviewing millions of users, we can say, Ram 6.4 Hemi engine has an appreciable towing capacity.

With an average 4050 lbs. payload, it offers 17,580 lbs. of towing capacity. Despite being a gas fuel engine, it still offers higher towing capacity than other advanced engines.

Read More About > Dodge Ram Engine Replacement Cost.

What Are the Common Ram 6.4 Hemi Problems

  • Multi-displacement Issues
  • Hemi transmission Problems
  • Engine ticking Issues
  • PCM issues
  • Exhaust leakage
  • Electrical Issues
  • Towing issues
  • Misfiring
  • Gear failing Problem
  • Engine stalling
  • Heavy Towing Issues
  • Wrist pin Malfunctioning

Ram 6.4 Hemi V8 engine was the leading product of the years 2019 and 2020.

Any vehicle manufacturer usually combines a Ram 6.4 Hemi engine with three transmissions, which are 66RFE, G56, and Aisin six-speed manual and automatic transmission.

These transmissions are responsible for the superior performance offered by this engine.

With the increased VCT and displacement, it also has enhanced engine breathing, intake stroke process, exhausting, and combustion efficiency.

Ram engines are mostly made of stainless steel, to produce fewer emission levels and better exhaust gaskets.

Other than this, you also get an excellent oil cooler, strong piston, high-quality fluid dynamic, and an ideal computational system with this engine.

Now, when we talk about ram 2500 6.4 Hemi problems, there are some common issues that may disturb you while driving. All those common issues are explained below:

01. Multi-displacement System

All multi-displacement systems are designed for saving the fuel that usually gets wasted while drifting a vehicle. They just close some of the cylinders, so that excess fuel does not leak.

Such a multi-displacement system is important to reach the required efficiency standards. But this is a new feature that needs a lot of improvement.

Despite saving fuel, it causes some irritating engine problems. Ram 6.4 Hemi engine has been reported a lot of times, for its rough and poor functioning.

These problems occur only because of its poor multi-displacement system.

02. Hemi Transmission Problems

Hemi transmissions are one of those common issues, which people have reported against the Ram 6.4 Hemi engine.

Some transmission fluids do not suit every vehicle, resulting in unexpected transmission leakage. A rough engine is the main sign of having such Hemi transmission issues.

Take your car or truck for proper inspection every 5 to 6 months, to avoid such issues. Hemi transmission problems are easy to fix if handled carefully.

03. Engine Ticking Issues

Engine ticking are some of those irritating noises, that we prefer avoiding while driving.

There can be any reason behind such problem including low oil pressure and improper valve train. 6.4L Hemi V8 engine does not have this issue as an inbuilt fault.

These noises directly depend on how you maintain and care for your vehicle. People usually do not worry about the start-up ticking noise as it vanishes once the vehicle gets started.

But, if you are experiencing this engine ticking constantly, then you must take them for repair by a professional.

The main reason behind such ticking is a lifter issue, so remember to check it timely.

04. PCM Issues

PCM issues are one of the most common 2019 ram 2500 6.4 Hemi problems. PCM means Powertrain Control Module that receives information based on installed sensors.

That information is further used in the efficient management of engine systems and transmissions.

A damaged PCM can alter all working parts of a vehicle, if not operated on time. A working engine and smooth less driving are clear symptoms of a damaged PCM. Other symptoms include:

  • Struggling in starting the vehicle
  • Confusing engine light
  • Dull performance

PCM issues are not serious in starting but get worsen with time. So, repair this issue as soon as possible to avoid other inconveniences.

05. Exhaust Leakage

RAM engines have reported such exhaust leakages a number of times. Hence, Ram 2500 6.4 Hemi engine is also equipped with this problem.

An exhaust leakage occurs because of a damaged engine, rough driving, accidents, or inbuilt faults. You should solve these leakage issues right after noticing them.

Moreover, an exhaust leakage decreases your engine’s performance with sharper and louder exhaust sounds.

If not repaired instantly, you can have puncture issues leading to serious accidents. Fuel economy is also one of the most affected things because of such issues.

06. Electrical Issues

Electrical issues are the most dangerous issues in a vehicle, as they can react in any form. You can consider it as the base of other evolving issues in a car or truck.

Small electrical issues are still manageable but, they can destroy your vehicle in seconds if got worsen. Such issues are some of the rarely reported sufferings with Ram 6.4 Hemi.

Your car will act weirdly on having any electrical issue, so always keep observing your car’s features and operations.

07. Towing Issues

We have seen that the 6.4L Hemi engine has a good towing capacity. But it is limited to a specific towing pressure.

If you exceed the towing pressure against its limits, then it can create trouble for you. Ram V8 engine operates on gas fuel and hence, is not good for heavy vehicles.

You must buy a diesel-based engine to avoid any towing issues. Diesel engines will work best with diesel trucks instead of Ram gas-based engines.

08. Engine Misfiring

Engine misfiring totally depends on you. Spark problems are generated, when you do not care for the spark plugs, cylinders, and good oil pressure.

Many underlying issues are linked with an MDS solenoid, lifter roller, or spark plug.

Ram 6.4 V8 engine comes with 16 spark plugs, 8 for each cylinder. Maintain them properly to avoid any engine misfiring.

08. Gear Failure

Imagine you are driving and suddenly the gears stopped working. That will be quite horrible but is possible, because of improper gears.

Any gear failure leads to uncontrollable downshifting, which is one of the common issues in the Ram 6.4 Hemi engine.

These gear failures are commonly linked with a chocked bell crank, which is located behind the inner combustion engine. These issues are easy to fix by an experienced mechanic.

09. Engine Stalling

Engine stalling is like a sudden break or a non turnable engine, which is a fundamental problem. Some of the Ram customers aggressively reported these issues in 2019 and 2020.

Ram 2500 6.4 Hemi problems are mostly easier to solve but, this issue can only be solved by a professional.

Sudden stopping of a car in the middle of the road can lead to a big mishappening. These issues usually occur after a car crosses its expected period.

If your car has crossed its lifespan, then keep checking it regularly to avoid any kind of engine stalling.

10. Wrist Pin Problem

A wrist pin is used for creating a bearing in a vehicle. Ram 6.4 engines have been rarely reported for any wrist pin issue.

A wrist pin works as a mechanical component that produces a loud noise on being damaged. Most of the trucks experience this wrist pin issue after a cold start.

You must not worry about these issues much, because they vanish once the engine gets warmed up.

Related Post About > Dodge Ram Transmission Rebuild Cost.

Major Causes and Solutions of Ram 6.4 Hemi Engine Issues

 All these issues occur because of some common mistakes and rare malfunctioning. Some of these common causes are:

  • Low Oil Pressure
  • High mileage use
  • Improper oil viscosity
  • Faulty lifters
  • Seized roller lifter
  • Exhausted Manifold Bolt
  • Overheating
  • Harsh Torque curves

 These issues can be solved easily or professionally by following these basic points:

  • Use gas fuel of 89 octane ratings or less.
  • Regularly take your vehicle for inspection.
  • Always maintain a sufficient oil level.
  • Replace your air filter regularly
  • Install a high-quality oil filter
  • Timely lubricate the engine

How Many Miles Will a 6.4 Hemi Last?

All above mentioned Ram 6.4 Hemi problems get ignored, once we talk about its excellent key features including longevity and mileage.

Most of the engines have an estimated life span of 8 years. When converted into mileage, 150,000 miles stands up as the standard mileage that a vehicle can have.

Ram 6.4 Hemi V8 engine is one of the most durable and long-lasting engines of all time.

All its good features like cool MDS, improved fuel economy, and compatible towing capacity combine to enhance its longevity.

These features allow its engine to run about 300,000 miles. While comparing with other vehicles, it offers double mileage than their average time span.

Such incredible longevity attracts people to choose RAM 6.8 Hemi engine over other options. By choosing this engine, anyone saves half of their regular maintenance charges.

What Fuel Mileage Does a 6.4 Hemi Get?

Good fuel efficiency is one of the most concerning points while buying an engine.

Although it is hard to determine the exact fuel mileage of any engine, 15MPG is considered the most reasonable one.

These values vary with every other vehicle and different driving styles.

After a grand survey, it was estimated that 14.02 MPG is the average fuel mileage offered by Ram 2500 engine.

If you drive smoothly, it will extend up to 15 MPG but, it can also reduce to 13.5 MPG on reckless driving.

If you want to see its impressive fuel mileage by practical testing, then check out this link.

Why Is Dodge Ram 2500 Hemi Real World Fuel Economy?(Video)

How Much Horsepower Does the Ram 6.4 Hemi Have?

If you will put some of those 2019 ram 2500 6.4 Hemi problems aside, there is no way back from Ram engines.

These engines offer the best horsepower and torque capacity in the category of gas-based engines.

Ram 6.4 Hemi V8 engine has reported 410 horsepower with a torque capacity of 429 lb.-ft.

Other than this, the maximum payload offered by the 2019 Ram engine is 4,050 lbs. with the best Hemi spherical chamber design.

Top Questions

Does Ram 6.4 Hemi engine need any premium gas?

No, you should not use any gas fuel that has more than an 89-octane level. Premium gas has an octane level higher than 91 or an exact 91.

A Ram 6.4 Hemi engine works well with a gas fuel of 89 octane level. If you want, you can use a gas fuel with a lesser octane level than 89, but, more than that will only damage your engine.

What are the best Hemi engines offered by Ram?

Ram 5.7 and Ram 6.4-liter Hemi engines are the best gas fuel engines till now.

However, the Ram 5.7l Hemi V8 engine is better than Ram 6.4l engine, as it rarely has any of those Ram 2500 6.4 Hemi problems.

Is it worth buying a Ram 6.4l Hemi engine?

Yes. Ram 6.4l Hemi engine offers you maximum longevity, strong mechanical design, and great mileage. Its hemispherical chamber design is the best reason to buy this engine.

My Final Thoughts

All engines have some weak points, but that does not mean they are not worthy.

Except for some rare cases, Ram 6.4 Hemi issues occur only when the vehicle is not maintained properly.

Ram engines are always worth buying because of their great durability, consistency, and higher efficiency.

Always research deeply about any engine, you are looking to buy. You can consider this article to clarify all your doubts regarding the Ram 6.4l Hemi V8 engine.