Chevy Malibu P0507: Idle Air Control – RPM Higher than Expected

P0507 This is an OBDII common trouble code. The code will be triggered if the engine idle speed exceeds 200 RPM or the manufacturer's predetermined limit. The generic code means it is the same as the other codes. Chevy Malibu Like any other vehicle.

P0507 Symptoms

P0507 is not an OBDII code that will be visible while driving. These are some of the symptoms that indicate the Malibu.

• The Service Engine is Soon to Be Lighted– The reason why you are here.
• Accelerate Idle Speed– Assuming that the code has been thrown due to a legitimate issue, you should notice the engine running faster when not pushing the gas.
• Thud Going Into Drive– Transmissions really don’t like to shift from park to drive at an RPM higher than idle. When you put your vehicle into P0507, it is not uncommon to feel the entire car jerk.
• Vehicles take off quicker– With the engine idling higher, people report feeling the vehicle take off when releasing the brake pedal. It can increase the risk of driving.

Chevrolet Malibu P0507 Causes & Diagnosis

Many possible causes of P0507 exist. While the code specifically mentions the “Idle Air Control System”, it would be a mistake to just go ahead and replace it without a little due diligence. The code often isn't caused by an Idle Control Valve.

Below are the causes most commonly seen in Chevy Malibu's P0507 problem. Also, we have a waist-to-treat them. There are many model year differences. You might start with looking at a Vacuum leak From there, you can move on.

Vacuum Leak

The Malibu will idle more often if the vacuum system is leaking. Leakage of the vacuum system allows air to get into the combustion chamber. This allows for slightly higher combustion rates, increases RPM, and throws code.

How to find a vehicle vaccum leak (Popular Mechanics, Article)
In less than a minute, how to find a vacuum leak (2CarPros, YouTube)

Vacuum leaks can be caused by bad things vacuum hoseIt is the Take in a lot, EGR SystemYou can find it anywhere that air is flowing. It’s not hard to find a vacuum leak though. Use the resources above and you’ll find it in no time.

Valve to control the idle airflow

Modern fuel-injected engines come standard with an electronic ignition system. idle air control valve. However, not all are. If you have determined that you don’t have a vacuum leak, the IAC is a great second place to troubleshoot P0507.

How to diagnose an IAC valve (Autozone Guides)

Throttle body

The throttle body can be opened and closed millions of times during the lifetime of a car's engine. It can collect dust from all the air passing through it. It can alter the characteristics of your vehicle's idle. When dirty, you’ll often feel the vehicle almost stall before the computer compensates and opens it a little more.

If the throttle body is damaged or not functioning properly, then the code can be thrown.

Here are some signs your Throttle Body is failing and what to do (Repair Pal)
What to do if your throttle body is dirty or bad? Youtube, YouTube Auto Repair

Conclusion

The P0507 problem is serious. Due to the unsafe nature of driving with an engine that is revving higher than it’s supposed to, we recommend having your Malibu serviced as soon as possible. You're welcome!