Skip the auto shop - Our mechanics make house calls

Q: Idle drop when clutch pushed in

asked by on

I have replaced the air filter...pvc....ccv...pvc hose....and replaced the iac and when I push in clutch to slow or stop the rpm drops from 800 down to 500 like it wants to stall....what else will cause this?

My car has 109000 miles.
My car has a manual transmission.

Did you clean the carbon out of the rest the throttle body? I know these engines well. I suggest taking the throttle body off, removing the IAC (idle air control valve), TPS (throttle position sensor), and all other sensors. Soak the throttle body in cleaner and remove all carbon. Buy a new throttle position sensor and throttle body gasket. If you still have problems, I would have a certified technician perform a ’smoke’ test to look for any more leaks that may be causing the rough idling issue. Valve cover gaskets were also notorious for causing this 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
  1. Home
  2. Questions
  3. Idle drop when clutch pushed in

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: Radio does not work except for satellite radio

Sounds like the radio head unit is faulty. There are no serviceable parts, so replacement is the only option. You may want to enlist the help of a mechanic, such as one from YourMechanic, to access the radio and pull...

Q: After 10 minutes driving, engine stalls - 2003 Saturn LW300

Hello. It sounds like you are having two different problems. The first is the stalling. I think your fuel pump is causing the stalling. The second is the wrench light and transmission not shifting correct. I think it may be...

Q: Battery terminal corroded

If the battery cable end has considerable white debris on it, then I would replace the entire cable, otherwise the problem will come back. Use a battery post cleaner to make optimal contact surfaces for the cable ends. Also, consider...

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...
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...