How to Solve Car Suspension Squeaking When Driving Over Bumps

Car Suspension

Suspension squeaking can be a nuisance that makes your car feel cheap and old, but it doesn’t have to. Instead of taking your car in for expensive repairs, you can solve the issue yourself with just a few common household items. The problem is usually caused by suspension joints not being greased or seated properly. This article will show you how to make sure all of your suspension joints are lubricated so they don’t squeak when driving over bumps on the road. It’s easy and inexpensive!

How a Car suspension works?

If you’re interested in learning more about how cars are put together, check out this website. It explains all kinds of automotive components with pictures and diagrams to better understand the significance of each part that makes up your car.

There are four main types of suspension systems most vehicles have today:  rack-and-pinion  (also called the recirculating ball)  independent front, torsion bar rear, and semi-elliptic leaf springs. All modern vehicles use at least one of these systems. Some luxury cars may even use all four!

Before we get started learning how to stop car suspension squeaking, let’s first take a look at what these different types of suspension systems look like so you have a basic understanding of where everything is located.

Here are diagrams and pictures of each type:

Rack-and-pinion  (also called the recirculating ball) suspensions – this type is very common in most modern cars today. The pinion gear (which looks like an arrowhead) has teeth around the entire perimeter which mesh with teeth on the rack. To increase steering effort (turning force), the pinion gear is moved closer to the center of the rack. This gives your car more turning power without sacrificing too much steering wheel effort.

This type of suspension has fewer moving parts than previous types which means a more precise steering feel and it’s also very cost-effective. This is why this type of system is so common today!

In the picture from left to right:  rack-and-pinion  system, caliper brake , disc brake , tie rod , sway bar   , lower control arm , shock absorber , upper strut mount .

Independent front suspensions  – instead of having the two wheels move together, this type allows each wheel to react separately and allows you to maintain more steering control. This is why these types of suspensions are usually found on higher-end luxury brands and sports cars.

In the picture from left to right:  tie rod, wishbone (also called an A-arm), coil spring , shock absorber, sway bar , gas shock absorber (gas struts).

Torsion bar rear suspension – unlike other suspensions which use springs or airbags to absorb bumps in the road, torsion bars do it by twisting. These bars transfer lateral forces through a differential to keep the car level and maintain even tire wear. This type of suspension is usually found on medium-duty trucks and SUVs.

In the picture from left to right:  torsion bars , shock absorbers, upper control arm , lower control arm .

Semi-elliptic leaf springs – this type of suspension works by having a spring between the frame and axle which allows you to absorb bumps in the road much more easily than with coil or torsion bar suspensions (leaf springs were used on older vehicles). If we had to estimate, we would say car suspesion squeaking due to worn out semi-elliptic leaf springs makes up about 80% of all suspension problems today!

If your car is squeaking too, don’t worry! Worn out leaf springs are very common and can be easily fixed by adding new ones to your car. Note – this is not the only possible cause of car suspesion squeaking for example bent suspension parts or bad power steering pump bearings could also cause the same problem.

Installing Semi-Elliptic Leaf Springs If you want to learn how to replace your semi-elliptic leaf springs , then check out the link below: How To Install New Rear Leaf Springs On A Car . It’s a very simple job that should take less than half an hour even if you’ve never done it before so give it a try, save some money, and keep your friends/family safe!

Guide on How to Solve Car Suspension Squeaking When Driving Over Bumps:

Instructions To Fix Car Suspension Squeak:

Step 1 – Remove the Wheel

Start by removing the wheel that squeaks. This is usually the front left wheel but can differ depending on your car’s model. Some cars have dual wheels on the left side, so check both of them if removing one didn’t fix the problem. Once you’ve removed this wheel, place it on a clean flat surface with plenty of room around for working.

Step 2 – Locate Suspension Joints

Now, look at where your car connects to each point of suspension. Look underneath and all around where the metal meets rubber in any spot along this line until you find some type of joint or fitting. Often times these joints will be in dirt and dust, so be sure to wipe them clean with a rag before continuing. These joints are what hold the suspension in place and allow your car’s wheels to move up and down without affecting how the other wheels move.

Step 3 – Clean Joints

Clean all of the dirt and grit out of each joint you’ve located, making sure not to dislodge any rubber or metal pieces that might be in there (you may need to use tweezers). Once you’ve cleaned all of these joints thoroughly, it’s time to add some lubricant!

Step 4 – Lubricate Joints

Now apply lithium grease (available at most hardware stores) generously over each joint until completely covered in grease (note: do not use petroleum based oils like WD40 or 3-in-1, these will damage rubber and metal). You may also want to add some extra grease on the ball and socket of larger suspension joints such as shocks or control arms. If you’re not sure which joints go where, just look at the wheel itself for some guidance. The top of the wheel goes around the wheel well and that’s usually where most joints are located.

Step 5 – Reinstall Wheel

Once all of your suspension joints have been lubricated, reattach the wheel back onto your car. Make sure all suction cups and plastic pieces fit securely before placing it back onto your vehicle (if applicable). Now, drive over any bumpy road you can find to get those greased joints working again (this is why we took the wheel off in the first place)! If you’ve done everything correctly, your car should sound and feel much smoother than before. Also, if it’s a front wheel that squeaks chances are you won’t hear any more squeak from that wheel even after reattaching everything.  This is because you’ve fixed the ‘first’ source of squeak. However, if your car still squeaks after this then chances are it’s the other wheels on the same axle that need greasing or there could be another problem with your suspension which might require a professional to fix.

Final Thoughts

All cars squeak and there’s no way to completely eliminate the noise, but you should notice a dramatic improvement in how smooth your car rides (and how much quieter it is) after this process. If you’re still having trouble after doing everything that we’ve suggested then please let us know in the comments. This guide serves as a very quick way for you to fix any squeaking coming from the suspension without taking it into a mechanic, but depending on how much your car squeaks or if you have difficulty following these instructions then it might be best to just visit your nearest auto repair shop instead. Good luck!

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