Skip the auto shop - Our mechanics make house calls

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.

A: Hi there. We will be happy to help with you...

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 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

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!

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: Car is idling rough - 1983 Jeep CJ7

Hello. This behavior sounds like the power brake booster has a leak or rupture, which acts like an air leak to the engine. Since the brake booster vacuum is generated by the engine's air intake, their functions and potential problems...

Q: Codes P0700 and P0705

These faults are similar, regardless of the model that year. P0705 points to a faulty transmission range switch; if the connector and harness are good, the switch will most likely need to be replaced. My recommendation would be to hire...

Q: Driver pressed brake pedal and car started spinning

Hello. I'm glad that everyone was okay. The rotor falling apart as you described could very well cause a loss of control of your 2007 Honda S2000. When that rotor goes out, the other rotors will still be operating normally and it will...

Related articles

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...
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...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...