2007 Saturn Aura Has Rough Idle

Common Causes of Rough Idling in Your 2007 Saturn Aura and How to Resolve Them

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
21% chance it's the
Spark Plugs
0%
15% chance it's the
Ignition Coil
0%
64% chance it's
Something else
The most common reasons a 2007 Saturn Aura has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
  • Spark Plugs: Worn or fouled spark plugs can lead to misfires, poor fuel economy, and difficulty starting the engine.
  • Ignition Coil: A faulty ignition coil can cause misfires, rough idling, and difficulty starting the engine due to inadequate spark delivery to the spark plugs.
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 2007 Saturn Aura has rough idle?

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.

Here are a few common symptoms of worn-out brake pads:

  1. Low brake pad warning light is on: Not all vehicles are equipped with this system, but if yours is, this dashboard indicator light will likely be the first signal it’s time to replace your brake pads.
  2. Brakes start to squeal regularly: This is often one of the first signs of worn brake pads and is caused by a metallic piece built into brake pads for this exact purpose. This part contacts the brake rotor to make a squealing or whining noise when the pads are low.
  3. Brakes make loud grinding noise: If not addressed early enough, your brake pads may get so worn that the metal backing plate of the pad grinds against the metal rotor.
  4. Brake pads look thin: You may be able to visually check your brake pad thickness to determine if they need replacement.

Most often, a brake system inspection will just be a routine portion of manufacturer specified maintenance, and will be performed at mileage intervals. In those cases, there will likely be no symptoms. However, when a brake system makes a funny noise, causes vibration, is hard to use, will not slow the vehicle, prevents the vehicle from driving, makes the vehicle pull to one side, or leaks brake fluid, the vehicle will need a visit dedicated to the inspection of the brake system.

What diagnostic steps should I take to identify the cause of the rough idle in my 2007 Saturn Aura?

To effectively diagnose the cause of a rough idle in your 2007 Saturn Aura, start with a systematic approach that prioritizes simpler checks before moving on to more complex diagnostics. Begin by inspecting the spark plugs, as worn or faulty plugs can significantly impact engine performance and lead to rough idling. Next, examine the ignition system, including the ignition coils and wires, to ensure they are functioning properly. A malfunction in these components can also contribute to idle issues. Following this, assess the air intake system by checking the air filter; a dirty or clogged filter can restrict airflow and affect engine performance. Additionally, inspect the fuel system, focusing on the fuel filter and injectors, as any blockages or malfunctions here can lead to uneven idling. Don’t forget to check for vacuum leaks in the hoses connected to the intake manifold, as these can disrupt the air-fuel mixture. Finally, using an OBD-II scanner to check for error codes can provide valuable insights into any underlying issues. By following this structured diagnostic approach, you can effectively identify and address the root cause of the rough idle in your vehicle.

What are the common causes of a rough idle in a 2007 Saturn Aura?

When dealing with a rough idle in your 2007 Saturn Aura, it's crucial to understand the common problems that could be causing this issue. One of the primary culprits is dirty or faulty spark plugs, which can lead to engine misfires and an uneven idle. Additionally, a clogged fuel filter can restrict fuel flow, making it difficult for the engine to maintain a steady idle. Another potential issue is vacuum leaks, which can disrupt the air-fuel mixture necessary for optimal engine performance. A malfunctioning mass airflow sensor may also be at fault, as it can provide incorrect readings that affect air intake and overall engine function. Lastly, problems with the idle air control valve can lead to fluctuations in idle speed, contributing to a rough idle. By identifying and addressing these common issues, you can restore your Saturn Aura's performance and ensure a smoother driving experience.

How urgent is it to address the rough idle in a 2007 Saturn Aura?

Addressing a rough idle in your 2007 Saturn Aura is not just a matter of comfort; it is crucial for the vehicle's overall health and safety. A rough idle can indicate underlying engine problems, such as faulty spark plugs or issues within the fuel system, which, if left unattended, may escalate into more severe complications. Ignoring these symptoms can lead to decreased fuel efficiency and engine misfires, ultimately resulting in costly repairs. Moreover, a rough idle can signal serious issues that could worsen over time, potentially jeopardizing your safety on the road. Regular maintenance and prompt repairs are essential to prevent further damage and ensure your vehicle operates smoothly. Therefore, it is imperative to address a rough idle as soon as it is noticed to maintain the longevity and reliability of your Saturn Aura.

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2007 Saturn Aura Rough Idle: Causes & Repairs | RepairPal