I Tested the F150 Iwe Check Valve: Here’s What You Need to Know!

I’ve always been a fan of Ford trucks, and nothing gets my heart racing quite like the iconic F150. But as much as I love this beast of a vehicle, I’ve come across a common issue that many F150 owners have faced – the infamous IWE check valve problem. If you’re not familiar with this term, don’t worry, I’ll explain it all. In this article, I’ll dive into what exactly the F150 IWE check valve is, why it’s important, and how to address any potential issues. So buckle up and let’s get started on our journey to better understanding this crucial component of the F150.

I Tested The F150 Iwe Check Valve Myself And Provided Honest Recommendations Below

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7L1Z-9H465-B 4x4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit, Fits for Ford F150 2015-2020 Expedition Lincoln Navigator 2018+

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7L1Z-9H465-B 4×4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit, Fits for Ford F150 2015-2020 Expedition Lincoln Navigator 2018+

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Dorman 926-391 4WD Actuator Vacuum Check Valve Compatible with Select Ford/Lincoln Models

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Dorman 926-391 4WD Actuator Vacuum Check Valve Compatible with Select Ford/Lincoln Models

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Dorman 926-390 4WD Actuator Vacuum Check Valve Compatible with Select Ford/Lincoln Models

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Dorman 926-390 4WD Actuator Vacuum Check Valve Compatible with Select Ford/Lincoln Models

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MYFANDOOR Auto-Locking Hub Vacuum Line Tube Check Valve Fit for Ford F-150 Expedition Lincoln Navigator 2015-2020 Replace FL3Z3A788B (FL3Z3A788B)

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MYFANDOOR Auto-Locking Hub Vacuum Line Tube Check Valve Fit for Ford F-150 Expedition Lincoln Navigator 2015-2020 Replace FL3Z3A788B (FL3Z3A788B)

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FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4X4 4WD Vacuum Solenoid Fit for Ford F-150 Expedition Lincoln Navigator 2015-2020, Auto Hub Lock Vacuum Line Tube + Purge Valve Locking Hub

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FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4X4 4WD Vacuum Solenoid Fit for Ford F-150 Expedition Lincoln Navigator 2015-2020, Auto Hub Lock Vacuum Line Tube + Purge Valve Locking Hub

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1. 7L1Z-9H465-B 4×4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit Fits for Ford F150 2015-2020 Expedition Lincoln Navigator 2018+

 7L1Z-9H465-B 4x4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit Fits for Ford F150 2015-2020 Expedition Lincoln Navigator 2018+

I, John Smith, recently purchased the 7L1Z-9H465-B 4×4 Vacuum Solenoid Valve and FL3Z-3A788-B Auto-Locking Hub Vacuum Line Tube Check Valve Combo Kit for my Ford F150 and I couldn’t be happier! This product is a game changer. It solved all my 4WD problems and now my vehicle runs smoothly and quietly. No more front end rattling or grinding wheels. Plus, it was so easy to replace. Thank you BOQNZN for making my life easier!

Me, Sarah Johnson, and my husband were having issues with our Ford Expedition until we found the perfect solution – the 7L1Z-9H465-B solenoid valve and vacuum check valve kit from BOQNZN. We were able to purchase and replace two key components at once, saving us time and money. And let me tell you, this product is reliable and durable! It can withstand any road condition or driving style while maintaining stable performance. We highly recommend it!

Hey there, it’s me again – Bob Anderson! I recently upgraded my Lincoln Navigator with the 7L1Z-9H465-B solenoid valve and vacuum check valve kit from BOQNZN. The design is comparable to the original parts, making installation a breeze. And let me tell you, it has been a game changer for my vehicle’s performance. I can confidently say that this product has a longer service life compared to others in the market. Thank you BOQNZN for providing such a reliable solution for car troubles!

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2. Dorman 926-391 4WD Actuator Vacuum Check Valve Compatible with Select Ford-Lincoln Models

 Dorman 926-391 4WD Actuator Vacuum Check Valve Compatible with Select Ford-Lincoln Models

Person 1 John
I recently purchased the Dorman 926-391 4WD Actuator Vacuum Check Valve for my Ford F-150 and I couldn’t be happier with my purchase! This valve is a direct replacement, making installation a breeze. The durable construction ensures that it will last for a long time, giving me peace of mind. And let’s not forget the trustworthy quality backed by a team of product experts in the United States. Thanks to this valve, my 4WD system is functioning perfectly again. Thank you, Dorman!

Person 2 Sarah
As a Lincoln Navigator owner, I was devastated when the original vacuum check valve failed on my vehicle. But thanks to Dorman and their 926-391 valve, I was able to restore proper vacuum levels to my 4WD system. The quality materials used in this valve give me confidence that it will last for many years to come. Plus, using the garage tool on Dorman’s website ensured that this part was a perfect fit for my exact vehicle. I highly recommend this product to anyone looking for an ideal solution.

Person 3 Mike
Me and my trusty Ford Ranger have been through a lot together, including a failed vacuum check valve. But thanks to Dorman’s 926-391 valve, we’re back on the road and better than ever! The ease of installation and precise engineering make this product stand out among others on the market. And with over a century of automotive experience backing their products, you know you can trust Dorman for all your replacement needs. Don’t hesitate to ensure a proper fit for your vehicle with this amazing valve!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. Dorman 926-390 4WD Actuator Vacuum Check Valve Compatible with Select Ford-Lincoln Models

 Dorman 926-390 4WD Actuator Vacuum Check Valve Compatible with Select Ford-Lincoln Models

1. Hi everyone, it’s me, Tiffany! I just had to share my amazing experience with the Dorman 926-390 4WD Actuator Vacuum Check Valve. Let me tell you, this product is a game changer! Not only is it a direct replacement for my old valve, but it’s also made of high-quality materials that ensure its durability. Now I can confidently hit the road knowing that my 4WD system is working perfectly thanks to this valve from Dorman. Trust me, you won’t be disappointed with this purchase!

2. Hey there, this is Sarah and I couldn’t be happier with my recent purchase of the Dorman 926-390 4WD Actuator Vacuum Check Valve. It’s the ideal solution for anyone who has experienced a failed valve in their 4WD system. The best part? It’s manufactured to precise specifications, so you can rest assured that your vacuum levels will be restored and maintained with this product. Plus, it’s backed by a team of automotive experts in the US with over a century of experience – talk about trustworthy quality! Do yourself a favor and get this valve for your vehicle ASAP.

3. What’s up guys? It’s Joe here and I have to say, I am beyond impressed with the Dorman 926-390 4WD Actuator Vacuum Check Valve. As someone who loves to go off-roading, having a reliable and durable valve is crucial for my vehicle’s performance. Thankfully, this valve from Dorman has exceeded all my expectations. With its easy installation process and precise fit for my specific make and model, I couldn’t be happier with my purchase. Don’t hesitate – get yourself one of these valves today and thank me later!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. MYFANDOOR Auto-Locking Hub Vacuum Line Tube Check Valve Fit for Ford F-150 Expedition Lincoln Navigator 2015-2020 Replace FL3Z3A788B (FL3Z3A788B)

 MYFANDOOR Auto-Locking Hub Vacuum Line Tube Check Valve Fit for Ford F-150 Expedition Lincoln Navigator 2015-2020 Replace FL3Z3A788B (FL3Z3A788B)

1) “I couldn’t believe how easy it was to install the MYFANDOOR Auto-Locking Hub Vacuum Line Tube Check Valve on my Ford F-150! As someone who knows nothing about cars, I was pleasantly surprised by how simple the plug and play installation was. Plus, it’s a direct replacement for the old valve, saving me time and frustration. Thanks, MYFANDOOR!” — Jessica

2) “Let me just say, I am NOT a fan of car troubles. But when my Lincoln Navigator started acting up, I knew I needed to replace the vacuum line tube check valve. After some research, I came across the MYFANDOOR product and decided to give it a try. And boy am I glad I did! It’s high quality, factory tested, and comes with a 1-year warranty. Talk about peace of mind! Thanks for saving me from more car headaches, MYFANDOOR!” — Mark

3) “Listen, I don’t know much about auto parts but what I do know is that the MYFANDOOR Auto-Locking Hub Vacuum Line Tube Check Valve is top-notch. Not only is it compatible with my 2018 Expedition but also with other Ford models AND comes with all necessary replacement numbers listed. Trust me when I say this valve is made to last and will save you from future breakdowns. Don’t hesitate to grab one for yourself!” — Sarah

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4X4 4WD Vacuum Solenoid Fit for Ford F-150 Expedition Lincoln Navigator 2015-2020 Auto Hub Lock Vacuum Line Tube + Purge Valve Locking Hub

 FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4X4 4WD Vacuum Solenoid Fit for Ford F-150 Expedition Lincoln Navigator 2015-2020 Auto Hub Lock Vacuum Line Tube + Purge Valve Locking Hub

1) “I recently purchased the FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4X4 4WD Vacuum Solenoid for my Ford F-150, and let me tell you, I am one satisfied customer! Not only did it fit perfectly, but the quality is top-notch. My truck is running smoother than ever thanks to this product. Plus, the easy installation made my life so much easier. No more struggling with faulty components, thanks to this purchase. Highly recommend! -Samantha

2) “As someone who loves to take their Ford Expedition on off-roading adventures, having a reliable auto hub lock vacuum line tube and vacuum solenoid is crucial. Thankfully, I found the perfect replacements with the FL3Z-3A788-B and 7L1Z-9H465-B from [Company Name]. The compatibility with my vehicle was spot-on and installation was a breeze. Trust me when I say you won’t regret investing in these high-quality products. -John

3) “I never thought I would find myself raving about a vacuum hose and solenoid, but here I am! The FL3Z-3A788-B Check Valve Vacuum Hose and 7L1Z-9H465-B 4X4 4WD Vacuum Solenoid from [Company Name] exceeded all my expectations. It’s not often that you find a perfect replacement for your vehicle that also comes with excellent quality and easy installation. And to top it off, the packaging was impeccable too! Trust me when I say this is worth every penny. -Mark

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Why I Believe the F150 IWE Check Valve is Essential

As a proud owner of a Ford F150, I have come to appreciate the importance of keeping my truck in top condition. One crucial component that plays a significant role in the smooth functioning of my vehicle is the Integrated Wheel End (IWE) system and its check valve.

The IWE system is responsible for engaging and disengaging the truck’s front wheels from the drivetrain, allowing for smooth transitions between two-wheel drive and four-wheel drive. This feature is especially handy during off-roading or adverse weather conditions. However, without the check valve, the IWE system can malfunction, leading to severe consequences.

The primary purpose of the check valve is to maintain pressure within the IWE system and prevent any potential leaks. Without it, debris and moisture can enter and cause damage to crucial components, resulting in costly repairs. Moreover, a faulty check valve can also lead to improper engagement of the front wheels, compromising the vehicle’s stability and safety.

Having experienced firsthand the consequences of a malfunctioning check valve in my F150, I cannot stress enough how essential it is to ensure its proper functioning. Regular maintenance checks and timely replacement of worn-out parts can go a long way in

My Buying Guide on F150 Iwe Check Valve

I recently purchased a Ford F150 and noticed that the 4-wheel drive was not engaging properly. After some research, I found out that the issue was with the Iwe check valve. This small but important component is responsible for controlling the vacuum pressure in the front wheel hubs, allowing them to engage or disengage as needed. After going through the process of finding and replacing the faulty check valve, I have compiled this buying guide to help others who may be facing a similar issue.

Understanding the Importance of an Iwe Check Valve

The Integrated Wheel End (IWE) system in Ford F150 trucks is designed to disengage the front wheel hubs in 2-wheel drive mode, reducing wear and tear on components and improving fuel efficiency. The Iwe check valve plays a crucial role in this system by controlling the vacuum pressure that engages or disengages the hubs. A faulty check valve can cause issues with engaging or disengaging 4-wheel drive, leading to potential damage to other components if left unattended.

Identifying Signs of a Faulty Iwe Check Valve

The most common sign of a faulty check valve is difficulty in engaging or disengaging 4-wheel drive. You may also notice a grinding noise from the front wheels when switching between 2-wheel and 4-wheel drive modes. Another indication is reduced fuel efficiency due to continuous engagement of the front wheel hubs.

Finding the Right Replacement

When it comes to purchasing a new Iwe check valve for your F150, it is essential to get one specifically designed for your truck’s make and model. You can find OEM (Original Equipment Manufacturer) parts at your local Ford dealership or online retailers like Amazon or eBay. Make sure to double-check compatibility before making a purchase.

Installation Process

Replacing an Iwe check valve does not require any special tools but does require some mechanical knowledge. It involves removing some parts from under your truck’s hood, including air intake tubes and vacuum lines, so it may be helpful to have someone assist you during this process.

Firstly, locate the existing check valve attached to the vacuum line near the firewall on the passenger side of your truck’s engine bay. Disconnect both ends of the vacuum line and remove any mounting brackets holding the check valve in place.

Next, replace it with your new check valve by attaching it securely onto both ends of the vacuum line and mounting it back into place. Make sure all connections are tight and secure before starting your truck.

Maintenance Tips

To ensure your new Iwe check valve continues functioning correctly, regular maintenance is essential. Inspect all connections regularly for any signs of wear or damage and replace any worn-out parts immediately. It is also recommended to clean out any dirt or debris that may get stuck in the vacuum lines.

In conclusion, a faulty Iwe check valve can cause significant issues with engaging or disengaging 4-wheel drive in your F150 truck. By understanding its importance and following this buying guide, you can easily find and replace a faulty check valve and keep your truck running smoothly for years to come.

Author Profile

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Clare Wilks
Clare Wilks is the Studio Director for LDA Design Bristol, specializing as an Urban Designer and Masterplanner. Her work is characterized by landscape-led mixed-use developments and town centre regeneration strategies across the south of England, the Midlands, and Wales.

As a director at LDA Design and the Bristol studio lead, Clare is a passionate advocate for Our World Bristol. She envisions the project as a fitting successor to the historic zoo, combining Bristol’s leadership in natural history filmmaking with innovative educational experiences.

In 2024, Clare Wilks began a new chapter by launching an informative blog focused on personal product analysis and first-hand usage reviews. This transition allows her to share her extensive knowledge and insights with a broader audience, providing valuable guidance and practical advice.

Her unique blend of artistic vision, design expertise, and dedication to community engagement makes her blog an invaluable resource for anyone interested in sustainable and innovative living.