2016 Jeep Compass Has A Vacuum Leak

Diagnosing Vacuum Leaks in Your 2016 Jeep Compass: Symptoms, Causes, and Repair Solutions

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Leaking Vacuum Hoses
0%
30% chance it's the
Leaking Gaskets and Seals
0%
20% chance it's the
Bad Actuators and Valves
0%
10% chance it's
Something else
The most common reasons a 2016 Jeep Compass has a vacuum leak are leaking vacuum hoses, leaking gaskets and seals, or bad actuators and valves.
  • Leaking Vacuum Hoses: A cracked or disconnected vacuum hose can lead to a loss of engine vacuum, resulting in poor engine performance and increased fuel consumption.
  • Leaking Gaskets and Seals: Aged or damaged gaskets and seals can lead to fluid leaks, resulting in loss of engine oil or coolant and potential engine damage.
  • Bad Actuators and Valves: A malfunctioning actuator or valve can disrupt the proper operation of the vehicle's systems, leading to issues such as poor engine performance or erratic behavior of components like the HVAC system.
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 2016 Jeep Compass has a vacuum leak?

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.

Problems with the intake manifold gasket can create the following symptoms:

  • Illuminated check engine light
  • Erratic engine performance
  • Oil and coolant leaks
  • Poor gas mileage
  • Stalling

» LEARN MORE: Intake manifold gasket symptoms

Rough idling, lack of power, engine oil leaks, engine burning oil, and illumination of the check engine light are all possible if the PCV valve has clogged. If the check engine light comes on, the on-board diagnostics (OBD) trouble codes will most likely relate to manifold vacuum, air and fuel mixture, PCV system, mass airflow sensor readings, and exhaust and emissions readings. These are all affected in the event the PCV valve is clogged, is stuck fully open, or is stuck fully closed, however, if the valve is stuck fully open, the engine oil seals are not in danger of overpressure.

A bad valve cover gasket will result in an oil leak. You may notice oil under the car or on other parts under the hood. You might also notice a burning smell while driving.

» LEARN MORE: Signs of a bad valve cover gasket

Any time there is an emissions fault the check engine light will be displayed. The purpose of the check engine light is to inform the driver that an emission related fault has been found, and that there are on-board diagnostic (OBD) trouble codes stored in the powertrain or engine control module. Additionally, since the emissions systems are so intertwined into engine control and transmission control systems, symptoms may include nearly any sort of drivability concerns. This may include harsh shifting, failure to shift, hesitation on acceleration, jerking, engine failure to start or run, loss of power, or any number of other drivability issues.

What are the steps to diagnose a vacuum leak in a 2016 Jeep Compass?

To effectively diagnose a vacuum leak in your 2016 Jeep Compass, begin with a comprehensive visual inspection of the vacuum hoses, looking for any signs of damage such as cracks, holes, or loose connections that could lead to leaks. Once you've completed the visual check, start the engine and listen for any hissing sounds, which can help you pinpoint the location of a potential leak. If the source remains elusive, consider using a vacuum gauge; by connecting it to the intake manifold, you can assess the vacuum reading at idle—any lower than normal readings may indicate a leak. Another practical method involves spraying soapy water on the hoses and connections while the engine runs; if bubbles form, you've identified the leak. For a more thorough investigation, a smoke test can be performed, where smoke is introduced into the vacuum system, allowing you to see where it escapes. Finally, utilize an OBD-II scanner to check for any related trouble codes, as a vacuum leak can often trigger a check engine light. By following this structured diagnostic approach, you can systematically identify and resolve any vacuum leaks in your vehicle.

What are the common problems associated with a vacuum leak in a 2016 Jeep Compass?

When diagnosing a vacuum leak in a 2016 Jeep Compass, it's essential to recognize the common problems that may arise. One of the most noticeable symptoms is rough idling, where the engine may vibrate or shake while at a standstill, indicating an inconsistency in engine performance. Additionally, you might experience poor fuel efficiency, as a vacuum leak can disrupt the ideal air-fuel mixture, leading to either a rich or lean condition that negatively affects gas mileage. Another critical sign is the illumination of the check engine light, which serves as a warning from the vehicle's onboard diagnostics system that something is amiss. Furthermore, a vacuum leak can result in a loss of power during acceleration, making it difficult to maintain speed or respond quickly to throttle input. In more severe cases, you may encounter stalling or difficulty starting the engine, particularly when idling. Addressing these issues promptly is crucial to prevent further damage to the engine and to maintain the optimal performance of your Jeep Compass.

How urgent is it to address a vacuum leak in a 2016 Jeep Compass?

Addressing a vacuum leak in your 2016 Jeep Compass is not just a matter of convenience; it is a critical maintenance task that demands immediate attention. A vacuum leak can severely compromise engine performance, leading to symptoms such as rough idling, stalling, and a noticeable drop in fuel efficiency. These issues not only make your driving experience less enjoyable but can also pose safety risks on the road. Furthermore, if left unresolved, a vacuum leak can trigger diagnostic trouble codes (DTCs) like P2173, which may indicate deeper problems within the engine or emission control systems. Ignoring these warning signs can lead to more extensive damage, resulting in costly repairs that could have been avoided with timely intervention. Therefore, it is essential to prioritize fixing a vacuum leak to ensure your Jeep Compass operates smoothly and efficiently, ultimately safeguarding your investment and enhancing your driving safety.

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