Skip the auto shop - Our mechanics make house calls

Q: My car is idling at 500 rpms is that normal? It's sounds like it's about to shut off but it doesn't

asked by on

When my car is idling it is at 600 RPMs but it drops to 500 and starts shaking like its going to shut off. What is my problem ?

My car has 116000 miles.
My car has an automatic transmission.

A: Hello. A low idle can be caused by a few di...

Hello. A low idle can be caused by a few different things. Before doing anything, I'd start by checking the computer for codes. This would tell me if the computer is seeing anything that is not correct. If there are no codes, then I check the sensors readings as a bad throttle position sensor or air flow meter can cause this. Most of the time this is caused by either a vacuum leak or a dirty throttle body. I would then check the throttle body and clean it if needed. This is probably the most common problem. If you are planning on having this low idle condition inspected, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
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・Save up to 30%

Get a quote

What others are asking

Q: My car dashboard will not light up

This usually means that there is a short in the circuit board for the instrument cluster. The instrument cluster has a circuit board in it that houses the lights for the instrument cluster. The computer sends information to the circuit...

Q: How do I manually adjust the front seats?

The manual front seats can be adjusted in a variety of ways: 1. The seats can be adjusted horizontally by pulling up on the bar underneath the seat and pushing the seat forward or backward. After adjusting the seat, release...

Q: Truck not starting

Hi, thanks for writing in. This is quite likely a faulty starter relay. This is a unit that directs power from the battery to the starter. When this is faulty it will cause the clicking sound you are describing. If...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...