Engine idle speed too high? Get your car inspected at your home or office.

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Engine idle speed is high Inspection Service

The engine idle is in many ways the pulse of your car and if it is running high, it could indicate a serious issue with the vehicle. A high idle can be caused from a number of issues, ranging from a faulty fuse to something a bit more complicated like a leaking vacuum hose.

How this system works:

The technical definition of idle speed is the rotational speed an engine runs on when it is uncoupled from the drivetrain and the throttle is not being depressed. It is measured in revolutions per minute (rpm). A passenger car will typically have an idle speed between 600-1000 rpm.

The idle control valve, also called an idle air control motor controls and maintains the engine idle speed.

If a number of vehicle accessories are running, for example, air conditioning, this will push up the idle speed, as the engine needs to generate enough power to run these accessories.

Common reasons for this to happen:

  • Faulty Fuse: In the majority of vehicles, engine idle speed is controlled via an idle control valve (ICV). A faulty or blown fuse in other electronically controlled systems can cause the IAC motor to malfunction, leading to a higher than normal engine idle speed.

  • Faulty Idle Control Valve (ICV): The job of the idle control valve is to maintain and control a consistent idle speed. The ICV will help counter any extra loads put on the engine such as lights, stereo and air conditioning. This part will often malfunction due to excessive carbon buildup in the intake manifold.

  • Vacuum Leak: On a fuel injected engine a vacuum leak will cause a high engine idle. The engines oxygen sensor will detect the extra oxygen entering the engine via the vacuum leak which will alert the engine’s computer that the exhaust is running lean, which will prompt the computer to pump in additional fuel, resulting in an abnormally high idle.

  • Malfunctioning Throttle: A malfunctioning throttle system can cause both a high idle as well as an engine stall. A dirty air intake or cracked air intake tube is often the culprit.

  • Computer Malfunction: A computer malfunction can cause a high engine idle, especially the powertrain control computer. If it misinterprets the information it is receiving about the current idle speed, a high idle speed may be the result.

What to expect:

A top-­rated mobile mechanic will come to your home or office to determine the source and cause of the high engine idle speed issue, ​and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How important is this service?

In most cases a high engine idle is something that should be looked at as soon as possible. If the weather is cold, see if the issue corrects itself as the engine warms up, if not a professional should look at the vehicle.

Fast and easy Engine idle speed is high Inspection service at your home or office.

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Recent Engine idle speed is high Inspection reviews

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YourMechanic Engine idle speed is high Inspection Service

Average Rating

4.5/5

Number of Reviews

28

Rating Summary
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Adrian

28 years of experience
65 reviews
Adrian
28 years of experience
Adrian did a great job. He came out and troubleshot the issue. I am confident that he has diagnosed the problem that my vehicle is having. He took his time and answered my questions. Adrian did a very thorough inspection and really set my mind at ease. Even though the inspection resulted in confirming that further repairs are needed, I am now confident in what those repairs will be and the results after completion.
2006 HONDA CIVIC - ENGINE IDLE SPEED IS HIGH - FRESNO, CALIFORNIA

Mathew

21 years of experience
89 reviews
Mathew
21 years of experience
Matthew arrived at the appointed time. He was friendly, knowledgeable and helpful. He clearly was interested in identifying the exact mechanical issue I was experiencing, which he found. In addition, he identified another issue which would probably be the cause of another mechanical in the near future.
2002 JEEP WRANGLER - ENGINE IDLE SPEED IS HIGH - JACKSONVILLE, FLORIDA

Mark

21 years of experience
58 reviews
Mark
21 years of experience
Mark was very helpful and thorough. Answered all my questions and made sure assisted me where ever else I needed help. Awesome job!
2004 HONDA ACCORD - ENGINE IDLE SPEED IS HIGH - TAMPA, FLORIDA

Chris

17 years of experience
251 reviews
Chris
17 years of experience
Chris was very helpful and explained everything thoroughly, I only have positive emotions associated with his service
1995 ACURA INTEGRA - ENGINE IDLE SPEED IS HIGH - HILLSBORO, OREGON

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