Q: My RPM needle keeps moving up and down

asked by on

Rpm needle keeps moving up and down

My car has 260000 miles.
My car has an automatic transmission.

Hello. This may be related to a faulty idle air control valve. As you may know this is a unit that monitors the air intake into your car’s engine as it is mixed with fuel. When this is not functioning correctly, this will cause the car to idle very roughly as you describe or in some cases not at all. I would recommend having an expert from YourMechanic come to your home to diagnose the rough idle and replace the idle air control valve as necessary.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 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
  1. Home
  2. Questions
  3. My RPM needle keeps moving up and down

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

Get a quote

What others are asking

Q: Rough idling, delayed shifting on a '07 Audi

Let me tell you. You've got a nine-year-old TDI Audi, and that's when they often turn into serious money pits. If it's changing gears too late, odds are that the transmission is starting to go bad. This could be a...

Q: What else can it be besides the fuel pump, relay, and fuel filter if my tahoe putts

The check engine light means the ECM has stored a code in memory. The code may be indicating the problem causing the problem you are having. The problem sounds like you are having an issue with the fuel control, such...

Q: Alternator not charging battery

This may be related to what is called a voltage regulator which is a unit that regulates the charging of the battery by the alternator. When this is not working properly, this may cause the alternator to be over charged...

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...
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...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...