2007 Saturn Vue Has Rough Idle

Diagnosing Causes of Rough Idle in Your 2007 Saturn Vue and How to Restore Smooth Performance

Find Repair Location
Reviewed by
Devin Cabugcal
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 Vue 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 Vue 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.

Customers with drum brake systems often specify they have lost braking power, or that the vehicle's brakes are making noise. This is because brake drums do not dissipate heat very well, so the heat from hard braking will cause stress fractures. These fractures make can make noise on the brake shoes as the drum revolves around the shoes. Lastly, the brake shoes may not be problematic, but may cause a grinding noise while stopping. This would indicate the shoes have no braking material left, and the brake shoes must be changed before the vehicle can be safely driven.

Learn more about brake shoe symptoms

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 are the steps to diagnose a rough idle in a 2007 Saturn Vue?

When diagnosing a rough idle in a 2007 Saturn Vue, it's essential to adopt a systematic approach that begins with the simplest checks before progressing to more complex diagnostics. Start by inspecting for vacuum leaks, as these can significantly affect engine performance. Next, examine the spark plugs for wear or damage, as faulty plugs can lead to misfires and rough idling. A clean air filter is crucial for maintaining the correct air-fuel mixture, so ensure it is free of debris. Testing the mass airflow sensor is also vital, as it directly influences engine idle quality. Additionally, assess the fuel system components, including injectors and the fuel pump, to rule out any fuel delivery issues. The EGR valve should be checked for proper operation, as a malfunction can disrupt the combustion process. Utilizing an OBD-II scanner to identify any error codes can provide insights into underlying problems. Finally, consider cleaning the throttle body, as buildup can hinder airflow and contribute to rough idling. By following this structured diagnostic approach, you can effectively identify and resolve the rough idle issue in your Saturn Vue.

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

When diagnosing a rough idle in a 2007 Saturn Vue, it's essential to consider several common problems that could be affecting engine performance. One of the primary culprits is vacuum leaks, which can disrupt the air-fuel mixture and lead to an unstable idle. Additionally, faulty spark plugs can cause irregular ignition, resulting in a rough engine operation. Ignition issues, particularly with bad ignition coils, can also manifest as misfires and hesitation, further contributing to the rough idle experience. Another potential issue is a leaking EGR valve, which can interfere with the engine's emissions control and idle stability. Lastly, don't overlook the condition of the motor mounts; if they are worn or damaged, they may cause noticeable vibrations at idle that smooth out during acceleration. By systematically checking these components, DIY enthusiasts can effectively troubleshoot and resolve the rough idle issue in their Saturn Vue.

How urgent is it to address the rough idle in my 2007 Saturn Vue?

Addressing a rough idle in your 2007 Saturn Vue is crucial for maintaining the vehicle's performance and safety. A rough idle often signals underlying engine problems that, if left unchecked, can escalate into more severe issues, leading to costly repairs and decreased reliability. Additionally, a rough idle can negatively impact fuel efficiency, resulting in higher operating costs over time. More importantly, some causes of a rough idle may pose safety risks, potentially compromising your vehicle's ability to operate safely on the road. Therefore, it is essential to prioritize a thorough inspection by a qualified mechanic to diagnose the root cause of the rough idle and implement necessary repairs. Taking action now can save you from more significant headaches and expenses down the line, ensuring your Saturn Vue remains safe and efficient.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.