Q: RPMs increase at traffic light with foot on clutch

asked by on

This has happened two different times: when I was at a traffic light, the RPMs increased. I don’t have any warning lights on my dashboard either before or after this happens. My car won’t move forward when this happens since my foot is on the clutch. I went to the dealership, but they couldn’t duplicate this. Can you tell me what is causing this to happen? Thanks.

Hi there. We will be happy to help with your 2005 Honda S2000. The surging you are experiencing is very likely a result from a stuck rotary air valve inside of the idle air control valve. This is a common problem that many S2000 owners have encountered. Cleaning out the idle air control valve should bring the driving condition back to normal. If you want to have this looked at by an expert, a certified technician from YourMechanic can come to your home or office to diagnose your RPM issue.

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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. RPMs increase at traffic light with foot on clutch

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: My clutch will not work.

Your clutch hydraulic system works very similarly to your brake system. If the clutch pedal is stuck in the down position and cannot be moved up at all then the clutch master cylinder has failed and has seized internally. If...

Q: I replaced my tensioner and drive belt and the tensioner still jumps when its in gear. What could be the problem?

Hello. You may need to approach this issue from two different angles. One of which is to figure out if the tensioner is mounted incorrectly. Make sure the retaining bolt or screws are dry and tight. If the pulley wiggles...

Q: EPS issue on 2002 Honda S2000

EPS systems will communicate with a professional scan tool. Inasmuch as all of the "faults" you refer to are possible, the fastest way to resolve this is to simply download the trouble codes that have set and/or use a real...

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...
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...