Jeep Wrangler Rattling Noise In Back

Get rid of the annoying noise coming from the back of your car

Any abnormal signs showed by our vehicle signal improper maintenance. While some noises may be symptoms of a deeper underlying problem, others could be easily managed. It is essential that you timely respond to the uncommon noises and sounds your Jeep makes. Early detection will prevent the issue from worsening and save you a ton of money afterward. This could also save you from experiencing a surprise shutdown in the middle of nowhere or in uncomfortable circumstances. 

A noise-related issue is solved by first pointing out its source of origin. It is only then that you can determine what flaw produces that noise and how it affects the normal functioning of your Jeep. A Jeep Wrangler rattling noise in back could mean several things. However, you must determine what exactly the disturbance sounds like. This would aid the right diagnosis. A rattling noise typically signals a problem with your Jeep’s exhaust system.

Determine the characteristics of the disturbance

There could be several reasons behind a noise emerging from the back of your Jeep Wrangler. You ought to pay attention and figure out the exact characteristics of this noise to get to the root of the problem. 

Try to decipher whether the noise is a backfire loud bang. This could indicate an improper air-fuel mixture. If there is a squealing sound, the best explanation could be a loose and slipping belt. A clicking noise is best explained by a loss of oil pressure while a flapping noise could occur because of a decaying belt. 

A humming noise emerging from under your car could mean the constant reverberation of the parts underneath. And a knocking sound in the engine is best explained by the incorrect use of fuel. A clogged fuel filter could emit the popping noise. A rattling noise is typically produced by the loose parts present in your Jeep’s exhaust system.

By identifying the source of such noises, you are able to guide your mechanic correctly so that the problem is rightly solved. This would prevent your Jeep’s maintenance from elevating your expenses. 

Don’t misjudge your Jeep’s undercarriage rattle as a typical Jeep thing

Jeeps are mainly meant for off-roading. They are not known to be luxurious or comfortable in any way. That’s why your experience may be different when you drive them on normal paved roads. Jeeps do make weird noises at all times. Every little noise coming from your Jeep cannot be duly explained. A lot of such noises can just be ascribed to the Wrangler’s particular shape that does not permit the correct aerodynamics.

Taking the top off without properly aligning the seals could increase the intensity of the wind noises even more. Even the larger than normal accessories would emit loud aggressive noises you weren’t ready for. Even when everything is normal, the doors and seats of a Jeep emit squeaking noises. Some typical whining noises can also be attributed to your beloved Wrangler’s dashboard. 

Jeep Wrangler Rattling Noise In Back

Know the common sources of this rattling noise

While it is common for Jeep owners to ascribe every abnormal noise as a typical Jeep thing, that shouldn’t become the norm. Even if your Jeep is running normally, you must figure out the source of some noises that didn’t appear before on your drives. If there are weird noises emerging from your Jeep’s undercarriage, you must inspect and find out whether there is some serious problem. 

Before expecting the worst, simply examine the undercarriage. Maybe you’ll recognize the source of the problem sooner than you think. Try to decipher whether this rattling noise emerges when you apply your brakes. In this case, there could be a problem with your braking system. You should thoroughly inspect all your brake rotors, anchor brackets, calipers, brake pads, and also the bolts that secure all these important parts. 

The best way to examine the undercarriage is by placing your Jeep on a jack stand and taking the wheels off. Like this, your area of vision will be improved and the overall examination process will become much easier. 

Note whether the noise emerges when you cross obstacles on the road. If this is the case, there could be a problem with your Jeep’s suspension. Examine all the bolts that secure your shocks, sway bar links, track bars, drag links, and control arms. If there is a problem with the suspension system of your Jeep, it will be noticed in this portion. 

However, if the rattling noises emerge out of the backside of your Jeep when you are simply idling, it indicates a problem in your exhaust system. There could be a loose part that needs repair. Although, the diagnosis cannot be made definite without a proper examination of the doubtful portion of your Jeep.

A rattling noise could also originate from loose nuts or improperly tightened bolts in your driveshaft. If this is the scene, your Jeep will emit more rattling noises when it is in motion. There could also be a problem with the motor mount or the transmission mount rubber dampeners. If these parts happen to deteriorate, your Jeep will emit rattling noises accompanied by vibrations while being in motion. 

One must note that this problem most commonly originates from the exhaust system. Unless there are accompanying vibrations, you must always check your Jeep’s exhaust system first. You must learn how to quickly examine your Jeep’s exhaust system to figure out the source of this infuriating rattle. Jeep owners usually come across a heat shield that has come out loose. This could easily happen if you frequently take your Jeep off-roading. On constantly being hit by rocks, heat shields become loose and often suffer from corrosion. 

Your vehicle’s exhaust system is a clear representation of your driving style and the climatic conditions in which your drive. If you go rough with your Wrangler, it’ll very easily show in the smoking exhaust.

Learn how to examine the exhaust system of your Jeep

It is essential that you know how to examine the exhaust system of your Jeep so that you can fix the minor problems on your own. Remember to not touch your Jeep’s exhaust system right after you have stopped driving. It is important to let it cool down so you don’t scald yourself. 

A simple examination would require the simplest tools. You need a common screwdriver, a mallet, and a hammer. You may also require a few wrenches or sockets and maybe a hose clamp too. In case you are able to figure out that the bolts securing your exhaust’s heat shield are corroded or loose, you’ll then only need some large-size washers and some small u-bolts to repair the issue.

You can do some minor repairs on your own

For a typical small-scale repair that can be done by yourself, you need a ball-peen hammer and a slotted screwdriver along with a ⅜ inch drive deep socket set and a ⅜ inch drive ratchet. You will also require a combination wrench set, cable clip clamps, and hose clamps. 

You ought to carefully examine the entire Jeep’s exhaust system while paying due attention to the heat shields. Because these are the usual sources of this problem. Examine the heat shields that are attached to the catalytic converter on the side of the passenger. Also, check the heat shield attached to the catalytic converter on the driver’s side. 

Ensure that the bolts connecting the y-pipe on the side of the passenger are properly tightened. All the bolts connecting the loop side and the y-pipe on the side of the driver must also be tight. Your exhaust crossover pipe heat shield will have spot welds that also require special attention. Typically, there are two welds on the front side. Also, check the two spot welds on the backside of your exhaust crossover pipe heat shield. 

Broken spot welds can be easily repaired by installing two 2 inch hose clamps and tightening them well. Ensure that the exhaust clamps behind the Y-pipe are also properly tightened. The resonator must also be properly checked to see whether it comes in contact with other adjoining parts. The hangers supporting the resonator must be in proper shape so that it remains separated. 

The clamp situated above the rear axle should be tight. Carefully examine all the other exhaust clamps too. The bolts securing the heat shield above the muffler could have rusted and made the heat shield come loose. Inspect this region and fix the final portion that could be the source of your disturbing undercarriage rattle. 


It can be very difficult to figure out the exact source of a particular noise in a Jeep. Owing to its complex structure and the usual noises that Jeep owners get used to, it is possible for you to take this rattling noise lightly. However, such a problem should be detected on time and properly solved to prevent further complications. 

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