High Idle

[Demaz58]

Hello all, I recently bought a C4 ran good for 3 days still starts and runs but idle is at 10 - 13. Seems way to high. Doesn't get any lower the longer it runs. Any ideas on what it can be ?

 

[compyelc4]

Hello all, I recently bought a C4 ran good for 3 days still starts and runs but idle is at 10 - 13. Seems way to high. Doesn't get any lower the longer it runs. Any ideas on what it can be ?

1. IAC (Idle Air Control Valve)
2. Throttle Body needs cleaning
3. Manifold vacuum leak.