Q: Car is idling high, revving at RPMs higher than 2700

asked by on

My car has a manual transmission. It has gone around 120,000 miles. After driving it for a short time, it would start revving over 2700 RPM when it idles. The revving happens at higher RPMs. If I turn the car off and start it up again, the issue would disappear for some time. The dashboard doesn't show any lights on. Do you have any idea what could be causing this?

Hello. When this car idles high like this it is because there is a vacuum leak. A vacuum leak will allow too much air to enter the engine causing it to idle too high. The most common place is at the intake manifold gasket. It can also leak from one of the hoses or from a bad EGR valve. I usually do a smoke test first to see if it shows the leak. I will also spray throttle body cleaner around the possible leakage areas to see if the idle changes. If it does, then there is a leak. If you plan on having this repaired, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose your car’s high engine idle.

Was this answer helpful?
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. Car is idling high, revving at RPMs higher than 2700

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: Q: Steam coming from the coolant reservoir

Hi there. The coolant reservoir cap could be not sealing properly and causing the coolant to boil and steam coming out the vent or the coolant could be weak and needs changed as the boiling point has been lowered making...

Q: My RPM needle keeps moving up and down

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...

Q: I have a 2001 Audi a6 Quattro Biturbo that got too hott driving and turned off now it wont turn back on

The status of the oxygen sensors is unrelated to the present no start. Overheating has the potential to cause head gasket leaks and valve and piston damage. You should measure cylinder compression to rule out low compression as a cause...

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 Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...