hi guys i just did a timing belt water pump seals the whole nine yards on a honda accord and i just finished it off and started the car up after topping off the fluids and when i started it up it had a really high idle like 5000 rpm so i shut the engine off ASAP what went wrong.

 

High idle usually means massive vacuum leak; PCV disconnected, vacuum brake booster line open, etc. Inspect your engine vacuum lines carefully, esecially large ones.

good luck