2021 Jeep Grand Cherokee Engine Makes A Ticking Noise

Common Causes of Ticking Noises in Your 2021 Jeep Grand Cherokee Engine and How to Address Them

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
12% chance it's the
Exhaust Leak
0%
88% chance it's
Something else
The most common reasons a 2021 Jeep Grand Cherokee engine makes a ticking noise are low oil level or pressure, an issue with the ignition system, or an exhaust leak.
  • Exhaust Leak: A damaged exhaust manifold or a loose connection in the exhaust system can cause an exhaust leak, resulting in increased noise and potential loss of engine power.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2021 Jeep Grand Cherokee engine makes a ticking noise?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

If the drive belt idler pulley fails, there will be a very audible chirping noise from the front of the engine. This is because the idler pulley bearing is no longer smooth, and rotating causes metal to grind at high speeds. If it is not changed immediately, there is a chance it will become dislodged, or allow the drive belt to slip off. If the belt falls off, the accessory that it drives will no longer function. For instance, if the alternator belt idler pulley fails, the alternator may stop functioning. Also if the pulley begins to wobble, allowing slack in the belt, it will make an extremely loud squeaking or screeching noise, especially on cold starts. This is the belt slipping on the crankshaft pulley, and will require belt replacement once the idler pulley is replaced.

If the drive belt tensioner fails, there will be a very audible chirping, grinding, or rattling noise from the front of the engine. This is because the tensioner pulley bearing is no longer smooth, and rotating causes metal to grind at high speeds. If it is not changed immediately, there is a chance it will become dislodged, or allow the drive belt to lose tension, or break. If the belt falls off, the accessory that it drives will no longer function. Also, if the tensioner spring fails, allowing slack in the belt, it may make an extremely loud squeaking or screeching noise combined with a rattle as the tensioner bounces back and forth under load. The squealing noise is the belt slipping on the crankshaft pulley, and will require belt replacement once the belt tensioner is replaced.

An engine leaking oil does not always make a puddle on the ground. A burning smell may be noticed from the front of the vehicle after driving. This is because engine oil leaks may fall onto hot engine components, especially the exhaust manifold, and burn off before making it to the ground. This poses a risk to the engine because the leak going unnoticed may deplete the engine oil reserve, and lead to an oil starvation issue. Some engine oil leaks only occur while the engine is running, so the leak may be larger than the small spot on the ground makes it seem.

Noises can be accompanied by many annoying or worrisome sensations. Consider the noise of grinding brakes, the noise sounds much like the brake pedal and steering wheel feel. This is important, as random noises can be difficult to replicate without knowing when the sound occurs, what must be done to make the sound, and what sound it is. Any professional technician can replicate and diagnose most noises, but to ensure the vehicle is more quickly diagnosed, make sure you tell your technician these three pieces of information.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the potential causes of a ticking noise in the engine of a 2021 Jeep Grand Cherokee, and how should I diagnose it?

When diagnosing a ticking noise in the engine of your 2021 Jeep Grand Cherokee, it's crucial to follow a methodical approach that prioritizes simpler issues before tackling more complex ones. Begin by checking the engine oil level, as insufficient oil can lead to poor lubrication of engine components, resulting in ticking sounds. If the oil level is adequate, inspect the valve lifters for any signs of wear or damage, as these are common culprits for ticking noises. Next, examine the exhaust system for any leaks, particularly near the engine, since an exhaust leak can mimic ticking sounds. If these initial checks do not resolve the issue, consider the timing chain tension; a malfunctioning tensioner may require professional inspection. Lastly, ensure that you are using the correct fuel octane rating and that the ignition timing is properly set, as spark knock can also contribute to engine ticking. By systematically addressing these potential causes, you can effectively identify the source of the noise and take appropriate action to resolve it.

What are the common causes of a ticking noise in the engine of a 2021 Jeep Grand Cherokee?

When you hear a ticking noise coming from the engine of your 2021 Jeep Grand Cherokee, it’s crucial to identify the underlying cause to prevent further damage. One common issue could be low engine oil, which can lead to increased friction among engine components, resulting in a ticking sound. Regularly checking and maintaining proper oil levels is essential for engine health. Another potential culprit is worn valve lifters; as these components degrade over time, they may produce a ticking noise during operation. Additionally, an exhaust leak can manifest as a ticking sound, particularly noticeable when the engine is under load, so inspecting the exhaust system for any leaks is advisable. Timing chain issues, such as wear on the tensioner or misalignment, can also lead to a ticking noise, indicating that the timing chain may need attention. Lastly, faulty fuel injectors can create a ticking sound as they function, so ensuring they are in good working order is important. By addressing these common causes, you can help maintain the performance and longevity of your Jeep Grand Cherokee's engine.

How urgent is it to address the ticking noise in the engine of a 2021 Jeep Grand Cherokee?

Addressing a ticking noise in the engine of a 2021 Jeep Grand Cherokee is a matter of urgency that should not be overlooked. Early detection is crucial, as it can prevent further damage to vital engine components, which may lead to costly repairs or even complete engine failure. The ticking sound could stem from various issues, including low oil levels, worn-out parts, or valve train problems, all of which can escalate if left unaddressed. Ignoring this symptom not only risks the integrity of the engine but also poses safety concerns for the driver and passengers. Therefore, it is highly advisable to consult a qualified mechanic for a thorough inspection and accurate diagnosis. By taking prompt action, you can ensure the reliability and performance of your vehicle while avoiding the potential for more severe and expensive issues down the line.

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