Q: Car idling high when stopped

asked by on January 27, 2016

My car idles high when in park or at a stop.

Engine idle speed is high Inspection $79.99 - $89.99 Get a Quote

Hi there. A vehicle idling high can be caused by a couple of problems. First, it can be due to a loss of manifold pressure, causing the vehicle to compensate the lack of air intake by throttling higher on its own. Secondly, this may be caused by a faulty throttle position sensor. A certified mechanic, such as one from YourMechanic, can diagnose this issue more accurately in person.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Car will not stay running when I take my foot off the gas pedal.

The fuel injection system does nothing until the engine is turning (starting or running), so pressing the pedal before you start will make no difference. The fuel injectors work at any RPM, so a choke is not necessary. The computer...

2007 Camry XLE V6 hook jumper cables on the wrong terminal now it won't accelerate past 25

Hi there: It's possible that the mechanic is correct, as hooking the battery cables up in reverse can cause serious electrcial damage within the ECU. In regards to why there isn't a fuse to protect it; you'd have to ask...

I have a 08 Pontiac G6 car won't jump start no lights no click at all what could this be

Be sure to resolve this as routinely jump starting a vehicle is not a safe practice. Every time the operation is performed there is a risk of damage to both vehicles, as well as bystanders, due to short circuit, reversed...

Finding hidden kill switches

If the vehicle will not start, an unknown aftermarket "kill switch" that is active, would be found in the course of a no start diagnostic. On the other hand, if a remotely operated device exists, but it is not presently...

Air conditioning and heater will turn on sometimes.

Check the wiring from the motor switch to the a/c and heating selection. Either the wiring is loose and is moving around causing the system to not operate properly or the switch has failed. If you need further assistance with...

Need diagram of firing order on distributor to connect plug wires

An accurate firing order diagram can be found online by typing "01 diamante firing order" in the search bar. An accurate diagram is required, as the vehicle will not run properly if the firing ignition wires are not installed in...

I have a 2007 Infiniti G35 sedan, when pressing the pedal softly I get a slight delay in acceleration, and sometimes a small jerk

Hi there. Typically when an engine "bogs down", it is caused by a fuel or air restriction issue. Common components that can cause this are mass air flow sensors, MAP sensor, EGR valve, fuel injectors being dirty or clogged or...

Front passenger door lock is frozen.

Hi there. The door lock cylinder and actuator is not working and needs replaced. You can remove the door panel with the door shut, it just will be a little harder with the lack of space. If you need the...

Is it possible to install power mirrors on a Lexus GS 350 2013

Hi there. It is possible to install power mirrors on this vehicle, it just depends on what style you are looking for. Your car should come standard with power mirrors, But if it does not have folding mirrors then that...

Related articles

A Buyer's Guide to the 2012 Mercedes-Benz GLK
If If you’re in the market for a compact SUV, it’s tough to think of a better option than the 2012 Mercedes-Benz GLK. In case the car manufacturer’s name doesn’t carry enough weight to convince you, consider some of the...
How to Troubleshoot a Car Idling at a High Speed
Car idle speed increases or decreases if there are damaged fuses, idle control valve, throttle blades, ECM, or a vacuum leak.
How Does an Engine Idle High and Low?
A common problem that car owners experience is high or low engine idle. A damaged intake gasket, cold air intake, or PCV valve can cause idle issues.