6 Common Issues with the Pentastar 3.6L V6 Engine

Shawn Gilfillan • January 23, 2025

Common Issues with the FCA 3.6L Pentastar Engine

If you own a vehicle with the FCA 3.6L Pentastar V6 engine, you’re driving one of the most durable and reliable engines that Chrysler, Dodge, Jeep and Ram are rolling off of their production lines today. Known for its balance of performance, efficiency, and longevity, the 3.6L Pentastar is designed to provide years of trouble-free service with proper maintenance. That’s why this popular powerhouse has earned its place in millions of vehicles, from the iconic Jeep Wrangler to the sporty Dodge Charger, and even utility vehicles such as the Ram Promaster since its introduction in 2010.

However, building something great is never without its challenges. Since its introduction, Pentastar V6 owners have noticed a few common problems that tend to arise over time. Like any vehicle, it’s not completely immune to developing issues. As an owner, it’s important to be aware of the complicated problems that can arise. Fortunately, at Automotive Magic we have extensive experience with these engines, and we are fully equipped to diagnose and repair them to keep your vehicle on the road.

Common Issue #1. Misfire and Check Engine Light

One common issue in the 3.6L Pentastar V6 is a misfire, often accompanied by the check engine light. While a misfire can be caused by several issues, one of the more common causes in this particular engine is a cylinder head failure due to overheating valve seats in cylinder #2. When this misfire occurs, your vehicle may lose power, and you might notice rough idling or poor acceleration. Depending on your vehicle’s age and mileage, it may be covered under an extended warranty, so be sure to check with your dealer. We’ve found this issue particularly prevalent in Jeep Wranglers, but it can also affect other models with the Pentastar engine.

The root cause of valve seat damage is often overheating, which can also be a common issue with these engines. It’s not a bad idea to get your cooling system checked and make sure it is working efficiently. Low oil levels can contribute to overheating and increased wear on engine components as well.

Common Issue #2. Overheating and Cooling System Failures

Overheating is a common problem in many engines, and as previously mentioned, the Pentastar V6 is no exception. Particularly with this engine, it is often caused by a malfunctioning water pump or radiator that prevents coolant from circulating properly. Water pump failure can be caused by a failure of the internal seals, corrosion, or wear on the impeller. We also see issues with the thermostat housing and coolant crossover pipe in some newer vehicles, particularly Ram Promasters.

It’s good practice to keep a close eye on your coolant levels and check for leaks regularly. Having your cooling system flushed every 30,000 to 50,000 miles can help maintain optimal performance and prevent overheating. Our technicians at Automotive Magic are well-versed in diagnosing cooling system issues, including water pump failures. If you're noticing signs of overheating or coolant loss, we can quickly address the problem and get you back on the road with minimal downtime.

Common Issue #3 Ticking Sound in the Engine

A persistent ticking sound coming from the engine is also common with vehicles utilizing the Pentastar V6. It’s likely a sign of rocker arm/lifter failure, which can lead to a check engine light, rough running, and further internal engine damage. Fixing a ticking sound caused by rocker arm failure usually involves replacing the damaged rocker arms, which requires a skilled and experienced technician. Parts themselves are not terribly expensive, but the labor involved can be significant.

Common Issue #4 Timing Chains/Tensioners

If you hear a rattling or clattering noise from the engine that is more apparent during startup and gets quieter as the engine warms up, you may have a problem with your timing chain. The timing chain helps synchronize the engine’s crankshaft and camshaft, and when it starts to fail, it can cause significant engine performance issues and trip a check engine light. The timing chain tensioner or guide wear is the most common cause of timing chain issues in the Pentastar engine. Over time, the tensioner may fail to keep the chain taut, leading to excessive wear.

If you're hearing noises that could point to timing chain issues, don’t hesitate to bring your vehicle in for a professional inspection. At Automotive Magic, we’ve helped countless customers address timing chain problems with as little hassle as possible, often catching issues early before they escalate.

Common Issue #5 Tapping, Knocking, or Rattling Noises

Similar to the previously mentioned timing issues, a tapping, knocking, or rattling noise coming from your engine may also be a sign of a problem with the oil pump or low oil pressure. This is often caused by deposits left behind in the cylinder head or insufficient oil levels. While it doesn't always indicate a complete oil pump failure, it's important to address the issue as soon as possible. Regular oil changes are the best way to prevent low oil pressure and the buildup of harmful deposits in the engine.

Common Issue #6 Oil Cooler/Filter Housing Failure

One of the most common issues that we see with the Pentastar V6 is leaks from the oil filter housing/cooler. It is made out of plastic, and with age and heat exposure, the plastic becomes brittle and is prone to cracking, breaking, and warping. We also see the seals and gaskets failing often. This manifests as oil and/or coolant leaks and can become a bigger problem if not taken care of quickly. The tricky placement of the cooler/filter housing requires an experienced technician to fix, and the labor required can drive up expenses.

While the FCA 3.6L Pentastar V6 engine is generally a reliable and long-lasting engine, it’s important to stay vigilant for common issues like misfires, ticking sounds, overheating, and oil pressure problems. We understand the unique challenges Pentastar 3.6L V6 owners face, and if you run into trouble, our team at Automotive Magic is here to help. Our experienced technicians have seen these issues time and time again, and we have the expertise to diagnose and repair any issues with the Pentastar engine so that your vehicle can continue to serve you for many years to come. If you suspect that your 3.6L Pentastar V6 engine is having any of these issues, don’t hesitate to give us a call or schedule an appointment. Let us help you keep your vehicle running smoothly!

The following Dodge, Jeep, and Chrysler vehicles are equipped with the 3.6L Pentastar engine:

2011-2014 Dodge Avenger
2011-2015 Ram Cargo Van
2011-2016 Chrysler Town & Country
2011-2017 Chrysler 200
2011-2019 Dodge Journey
2011-2020 Dodge Grand Caravan
2011-present Chrysler 300
2011-present Dodge Challenger
2011-present Dodge Charger
2011-present Dodge Durango
2011-present Jeep Grand Cherokee
2012-2018 Jeep Wrangler
2012-present Ram 1500
2013-present Ram ProMaster
2016-present Chrysler Pacifica
2020-present Chrysler Voyager

< Older Post

Newer Post >

Shawn Gilfillan is the dedicated owner of Automotive Magic in Kenvil, NJ. With over two decades of experience, Shawn has led his team in providing expert auto repair and service since 2003.

In 2022, Magic Lube & Rubber was born in Lake Hopatcong, NJ. Committed to fostering strong community ties and supporting team development, Shawn prioritizes customer satisfaction above all. As a proud family man and long-time resident of Roxbury, NJ, Shawn brings a blend of professionalism and warmth to his business.

Trust Shawn and his team for all your automotive needs with confidence and assurance.

Schedule an Appointment

Spring Into Car Care

April 11, 2025

Why April Is the Right Time to Show Your Vehicle Some Love

Drive Belts & Pulleys: The Unsung Heroes Under Your Hood

April 9, 2025

When it comes to car maintenance, there is a lot that comes into play. It can almost be overwhelming at times. Focus on common wear items like the battery, brakes, and tires are usually at the top of the list for most, but there are other items that need attention as well. Drive belts and pulleys are some of these items. These small components help keep your car running smoothly, and after a while they do wear out and need replacement. Unfortunately, failure can lead to a breakdown on the side of the road and leave you needing a tow. So what are they and what do they do? Let’s find out. What Are Drive Belts and Pulleys? Think of drive belts as super strong rubber bands that transfer power from your car’s engine to help run other important components. The pulleys are similar to any other pulley; they are just metal wheels that help guide and control the belts movement. However, these pulleys are attached to other engine accessories, and when the belt spins the pulleys they provide power to these other accessories. Together, they keep essential parts of your car operating. Most modern cars use a serpentine belt, a long, continuous belt that is wrapped around multiple pulleys that power multiple systems. Older vehicles might have V-belts, which are shorter and typically run a single component at a time. What Do Drive Belts and Pulleys Power? Drive belts are made from durable rubber and reinforced materials, but they don’t last forever. Over time, they can crack, stretch, fray, glaze, or even snap. Pulleys have a lifespan as well. They are subject to corrosion and the bearings can go bad and even seize up completely. Without drive belts and pulleys, several key systems in your car wouldn’t function properly. Here’s what they keep running and what can happen if they fail. Alternator – Powers your car’s electrical system and keeps the battery charged. If the belt breaks, your battery will eventually die, leaving you with a car that won’t start or may die while you are driving. Water Pump – Circulates coolant to prevent your engine from overheating. A broken belt could lead to severe engine damage due to overheating. Power Steering Pump – Makes turning the steering wheel easier. If the belt slips or breaks, steering your car instantly becomes much harder, especially at low speeds. Air Conditioning Compressor – Helps keep your car cool on hot days. While not as critical as other components, losing A/C can be uncomfortable. Drive Belts and Pulley Maintenance Drive belts and pulleys don’t necessarily require maintenance, but they should be inspected regularly. In some cases, a bad pulley can cause the belt to slip or even pop off of the pulley completely. There are a few things to look for that may tell you it’s time for replacement. Check for Cracks, Fraying, or Glazing – Look for visible signs of wear on the belt. If you see cracks, missing ribs, fraying, or a shiny, glazed appearance, it’s time for a replacement. Listen for Strange Noises – A worn out belt or pulley may slip on the pulleys and cause a high-pitched squealing, chirping, or rattling noise when you start the car or turn the wheel. Watch for Performance Issues – If your battery warning light comes on, your power steering feels heavy, or your car starts overheating, a belt or pulley could be the culprit. Have Regular Inspections – Most belts last between 50,000 to 100,000 miles, but checking them during routine maintenance can prevent unexpected failures. Replace Before It Fails – A worn belt may still work, but it could snap at any moment. Replacing it early saves you from the headache of a sudden breakdown. Final Thoughts Drive belts and pulleys may not be the most glamorous parts of your car, but they play an essential role in keeping your car running smoothly. Keeping them in good condition helps ensure your car stays reliable and safe. At Automotive Magic , we offer a bumper to bumper vehicle health inspection that includes checking belts and pulleys for wear. Our inspections are sent to you with photos, videos, and descriptions explaining any issues we find with your vehicle and their severity to keep you on the road with confidence. Stop by today or schedule an appointment, and let’s make sure your car is running at its best!

Rabbit Wheels Car Rental at Automotive Keeps You Moving!

March 25, 2025

Your Solution is Right Here! Automotive Magic offers on-site car rentals to help you stay on the move while your vehicle is being serviced? That’s right — Rabbit Wheels Car Rental Service is available at both locations, and it’s becoming a client favorite! Dropping off your vehicle for service can sometimes feel like hitting the pause button on your day and coordinating rides, waiting around, or juggling your schedule just to stay mobile? It’s a hassle. That’s exactly why we’ve been offering Rabbit Wheels — a convenient rental solution designed with your busy life in mind. While Rabbit Wheels has been available for a while, it's now truly taking off as more clients realize just how effortless it makes their service experience. When you're at Automotive Magic in Kenvil, the process is simple, seamless, and all about keeping you moving. Here’s How It Works: Drop off your car for service, and instead of worrying about how you’ll get around, you can make a reservation for a reliable Rabbit Wheels rental, available right on-site. No waiting. No extra stops. Just keys in hand and freedom to go about your day. Why Clients Love Rabbit Wheels: Speed: Quick and easy rental process — get back on the road fast. Reliability: Well-maintained vehicles ready when you are. Affordability: A cost-effective way to avoid downtime without breaking the bank. Whether you’re heading to work, tackling errands, or just want the freedom to come and go while your vehicle is in expert hands, Rabbit Wheels has got you covered. At Automotive Magic, we’re dedicated to giving our clients the best experience possible — and that means minimizing inconvenience while maximizing your time and flexibility. Let’s Keep You Moving! Don't let vehicle service disrupt your plans. Call today to make your reservation for both your service and your Rabbit Wheels rental — all in one easy step. Because when it comes to convenience, we’ve thought of everything — including the wheels to keep you going!