Top 5 2007 to 2018 Jeep Wrangler Problems

Mechanic showing Jeep Wranger JK Problems

In today’s post, we take a look at some of the top 5 Jeep Wrangler problems that most owners are likely to come across. These issues mainly concern the 3rd generation version that covers the 2007 to 2018 model years. We explain what causes some of these problems and how you can go about fixing them. 

How to Diagnose and Fix 3rd Generation Jeep Wrangler Problems 

1. Water on Floorboards

We’ll start with the topmost common Jeep Wrangler problem that a lot of users have seen. It involves the accumulation of water on the vehicle’s floorboards when it rains. 

The water tends to get into the cabin through the A-pillars. These are supposed to have a rubber seal that keeps moisture and water from getting through the doors and windows. Unfortunately, the seals do not do their job all the time. 

The water seeps through and flows down to the floorboards. The best solution for this is to replace your A-pillar seals with a stronger and improved gasket. Remember to also remove all the water from the floorboards to prevent them from rotting. 

2. 4WD unit leaks 

The most common 4WD unit leaks in the 3rd generation Jeep Wrangler take place at the front differential, rear differential, and transfer case. At the front differential, the leakage tends to take place just near the CV joints where there’s no seal. 

The seal is located right where the drive axles connect to the differential. If you find a leak near your CV joints, it means that debris found its way inside the axles and ruined the seal. This is one of the more complex Jeep Wrangler problems to tackle.

How to Fix Unit Leaks on a Jeep Wrangler

You’ll need to take your front differential apart and separate it from the drive axles to replace the damaged seal. Remember to also take a look at the differential as well as a damaged pan gasket can also cause leaks. If you notice any fluid dripping down there, you’ll have to replace the pinion seal. It’s found right where the drive shaft connects to the differential. 

For the rear differential, the same problem applies. The only exception is that the axle seals are located closer to the wheels. If those start to leak, gear oil may find its way to your brakes. This may cause them to lock up.

How to Fix Transfer Case Leaks

The transfer case on a Jeep Wrangler requires a bit more attention when it comes to fixing leaks. This is because it has several seals on it. You can start by taking a look at the output shaft seals found in between your driveshaft and transfer case. These tend to go bad when exposed to debris encountered during off-roading. 

You may find a leak on either side of the transfer case or right in the middle where the case seal is located. You’ll mostly see fluid dripping from your skid plate as an indication. Other symptoms that you may notice include hearing noises coming from your front differential, rear differential, or transfer case. You’ll need to first locate the source of the problem then replace the corresponding seal. 

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3. Ignition Cylinder

The ignition cylinder is the part that you insert your ignition key to start your Jeep. Unfortunately, it tends to go bad due to dirt and debris. The dirt finds its way into the cylinder when you’re driving mostly with the top and doors off. 

It causes a short circuit and prevents the cylinder from doing its job. Jeep released an updated version of the ignition cylinder that helps to keep moisture and debris out. It lasts as long as your Jeep and you’ll need to get it as a replacement. 

4. Starting Issues

Another common Jeep Wrangler problem is experiencing a no-start situation every time you turn your ignition key. This is caused by a failing wireless control module (WCM) that fails to detect the chip located inside the key. 

As a result, the vehicle’s theft system will always think there’s an intruder trying to start the vehicle using a foreign object. This stops the car from starting every single time you put the key in. The best solution here is to replace the wireless control module. You’ll need to program the new unit so that it works with your ignition key. 

5. Exhaust Manifold

Our final Jeep Wrangler problem on this list is the exhaust manifold. After burning air and fuel, the internal combustion engine emits exhaust gases through the exhaust manifold which then directs them out via the tailpipe. 

Unfortunately, these manifolds tend to crack. This could be due to a metal defect caused by an air bubble that got stuck inside the casting. It could also be caused by exposure to splashes of water while off-roading. The rapid contraction that takes place when it’s hot causes the manifold to crack. 

The best fix for this is to replace the exhaust manifold altogether. You’ll need to pay attention to the bolts and screws that hold it to the engine. They tend to break due to increased tension caused by numerous duty cycles. 

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Top 5 2017 to 2021 Subaru Impreza Problems

Subaru Impreza Problems

The 5th generation Subaru Impreza is a fairly new car. While it may have its own faults like every other vehicle that’s on the road, there aren’t that many problems that we have seen on our end. We went ahead and listed the top 5 Subaru Impreza problems that cover the 2017-2021 model years. Here they are.

Diagnose and Fix Common 5th Generation Subaru Impreza Problems

1. Blower Motor

The first common Subaru Impreza problem on our list has to do with the blower motor. The blower motor is a fan that pushes air through the vehicle’s vents. It is located within the vehicle’s HVAC system and sends either warm or cold air into the cabin depending on the selected fan speed and climate control settings.

Ideally, the blower motor should operate smoothly and quietly. However, you may hear a squealing noise when it goes bad. The squealing noise is quite noticeable to the driver and anyone else occupying the vehicle.

The best solution is to remove the blower motor and inspect it for leaves and debris. These tend to make their way into the HVAC system through the vents found outside the car. You will need to clean the blower motor and reinstall it. If that doesn’t solve the problem, you’ll have to replace it altogether.

2. Outer Tie Rod

Outer Tie Rod is a Top 5 Subaru Impreza Problem

The tie rods act as the pivot point between the steering system and the wheel. Their ends are adjustable and can be lengthened or shortened to fix the car’s alignment. Sometimes, they tend to loosen up and cause excessive play in your steering wheel.

As a rule of thumb, it’s always best to first diagnose the problem before trying to fix it. You’ll need to raise the vehicle, shake the tire back and forth as you check for play in the tie rod joints. You can have someone take a look for you as you do it.

Any unnecessary movement will be an indication that you need to replace your outer tie rods. It’s best to take your vehicle to the nearest auto shop for an alignment once you’re done fixing it. This will ensure your tires meet the road at the right angle.

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3. Lower Ball Joint

Just like the tie rods, the lower ball joints act as a pivot between the control arms and the steering knuckles. They ensure you have a smooth and safe ride and that you’re able to control the vehicle precisely.

They are one of the easier Subaru Impreza problems to fix. The lower ball joints are secured by nuts that go through the lower control arms. They are also bolted at the top. To check them, you’ll need to raise the car and shake the tire as you would when checking the tie rods. Remember to have your vehicle aligned once you replace the ball joints.

4. EVAP Canister Vent Hose

The EVAP Canister is an important part of your vehicle’s Evaporative Emission Control System that absorbs and stores fuel vapors to prevent them from being released into the atmosphere. The vapors are then siphoned into the engine intake manifold where they are used to power the engine.

Sometimes, the EVAP Canister vent hose gets blocked by spiders. This can cause a Check Engine light to pop up on your Subaru Impreza’s dash. You’ll need to disconnect the hose, clear it out using water or compressed air and reinstall it. This should help clear the trouble code.

The EVAP code is also sometimes caused by a bad leak detection pump. You’ll need to check it out too if you don’t have a problem with the EVAP canister vent hose.

5. Starlink App is a Subaru Impreza Problem

Starlink App is a Common Subaru Impreza Problem

As mentioned earlier, there aren’t many mechanical Subaru Impreza problems that we have come across. As such, our last item on this list has to do with the Starlink app. It allows you to gain access to multimedia content in your Subaru.

The app pushes content like podcasts, music, weather, and much more from other apps and provides other functions that you can enjoy. However, it’s fairly difficult to use and doesn’t work all the time. The Bluetooth feature is also known to fail a lot while the app sometimes freezes and malfunctions.

Most of the updates offered by Subaru have also allegedly failed to fix the Subaru Impreza system issues. Some Subaru Impreza owners have had a bit of luck rebooting the app and resetting it to its factory data settings. You can also try that to see if it will fix the problem.

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Top 5 2006 to 2010 Volkswagen Jetta Problems

Mechanic showing Volkswagen Jetta Problems

If you own a 5th generation Volkswagen Jetta or are looking to buy one, here’s a list of the top 5 problems that we have come across in the car. These Volkswagen Jetta problems cover models released from 2006 to 2010. We explain the most common symptoms you’re likely to notice and how to go about fixing the issues. 

Diagnose and Fix Common 5th Generation Volkswagen Jetta Problems 

1. Ignition Coils

Ignition Coils is one of the Volkswagen Jetta Problems

The 5th generation Volkswagen Jetta comes with a five-cylinder engine. As such, it has 5 ignition coils located underneath the engine cover. These tend to go bad due to many reasons including excessive engine heat, bad spark plugs, and bad plug wires. 

Bad Ignition Coil Symptoms

Two of the most common symptoms that you’re going to get when you have a bad ignition coil include an engine that runs rough and a Check Engine light that may be flashing. You’ll also get a P0300 trouble code indicating a random misfire or a P0301 through P0305 code. 

This is one of the relatively easier Volkswagen Jetta problems to fix. All you’ll need to do is remove the top engine cover, disconnect the connector that connects to the bad ignition coil, pull the coil out, and put a new one in. It’s also a good idea to replace the spark plug. 

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2. Shifting Issues

Your car’s automatic transmission needs proper care and maintenance for it to operate. If you ever notice something odd about it while driving, take your car to a specialist as soon as possible. Shifting issues can be very expensive to repair if ignored. 

Symptoms of Shifting Issues

Some of the symptoms that you should look out for include a slightly odd shift, any grinding or shaking when the car is switching gears, a lack of response when you shift, and a noisy transmission. The problem could be caused by low or dirty transmission fluid. 

In serious situations, it could be caused by a bad internal component that has to be removed and replaced. A shifting issue is one of the more complex Volkswagen Jetta problems that you’ll encounter. If you do not have the expertise, it’s best to leave it to the professionals. 

3. Front Wheel Bearings

The front wheel bearings in the 2006-2010 Volkswagen Jetta produce a loud noise when they start to go bad. The noise may sound like a helicopter or an airplane when you’re driving down the road. It is typically caused by impact damage from normal wear and tear. 

One of the best ways to diagnose bad front wheel bearings is to lift the vehicle to a reasonable height and shake the tire. Any unnecessary play indicates that the wheel bearing needs to be replaced. You can also spin the tire and hold on to the coil spring to check for vibration. 

4. Window Regulator

One of the most common Volkswagen Jetta problems that owners encounter is having window regulators and motors that go bad. These prevent the back or front windows from going up or down. 

The main cause of this is debris that gets trapped in the window regulator or motor assembly. The cables could also be frayed or worn out due to abuse and overuse. If your window gets stuck down or produces weird noises when you try to open or close it, you may have a bad window regulator or motor.

The best solution here is to remove the door panel, inspect the window system for any damages or debris. If the regulator or motor is damaged, you’ll need to a get new window regulator for replacement. 

5. Water Pump

Bad water pump is one of the common volkswagen jetta problems

The water pump is located right in front of the engine in the 2006-2010 Volkswagen Jetta. You’ll need to remove a few parts to access it if it goes bad. Some of the most common reasons why your water pump could fail could be due to worn bearings, a damaged seal, corrosion, and using the wrong coolant. 

Symptoms here include an overheating engine and a leaking water pump. Another common symptom would be hearing a high-pitched whining noise that increases when you accelerate. You’ll need to pull over to the side of the road if you notice your engine is overheating while driving. The best solution is to replace the water pump and any other parts that may have been damaged. 

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If the heat isn’t working or isn’t as hot as it used to be, your vehicle could have a clogged heater core. If there are no signs of a coolant leak, a full coolant level, and no signs of disruption in the flow of coolant, flushing out the heater core may fix this problem. This post explains the importance of a heater core flush and how to flush the core yourself.

How to Flush the Heater Core Yourself

Flush or replace a heater core yourself with quality auto parts at 1aauto.com
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Damaged Electrical Connectors in Your Car?

Sometimes electrical connectors or wiring harnesses can burn out or melt and need to be replaced. Luckily this repair is pretty simple. Our mechanic in the video below shows how to replace a wiring harness for the headlight wires, but the same procedure applies to a typical wiring harness.

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Grinding Noise When Turning?

Mechanics pointing to why your might hear a grinding noise when turning

Hear a scraping, rubbing, or grinding noise when turning your car or truck? It may be the condition of your brakes. Find out what brake parts to inspect in the video and article below as our mechanic demonstrates how to check the brakes and identify the signs of a grinding sound.

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