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

P0507 This is an OBDII common trouble code. This code is usually triggered when engine idle speed exceeds 200 rpm. This code is generic, meaning it can be used for any engine. Chevy Uplander As any vehicle else.

P0507 Symptoms

P0507 is not an OBDII code that will be visible while driving. These are some of the symptoms that the Uplander may present:

• Coming Soon: Service Engine Light– 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. Driving can become more hazardous.

Chevy Uplander P0507 Causes & Diagnosis

There may be many reasons for P0507. 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. It is sometimes not the source of the code that the Idle Control Valve causes.

Below are the causes most commonly seen in Chevy Uplanders with 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 Uplander will idle more often if the vacuum system is leaking. Leakage of the vacuum system allows air into the combustion chamber. This allows for slightly more combustion and increases RPM. It also throws the code.

How do you find a leak in your vehicle's vaccum? (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 Intake is endless, EGR SystemOr anywhere air can flow through. 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

The majority of modern fuel injected engine are fitted with an idle air control valve. They are not all the same. 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

In the course of an automobile's life, the throttle body will open and close millions of time. The accumulation of dust and air can slow down the body's ability to withstand high levels of pressure. 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.

Alternativly, the code could be thrown if it is not functioning properly due to damage to the throttle body.

How to spot signs that your throttle body is going down (Repair Pal)
What can you do to tell if your throttle is bad or dirty? (YouTube Auto Repair Youtube)

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 Uplander serviced as soon as possible. We wish you all the best!