hey
i hav a 97 1.4 civic and recently it is reving up from 1200rpm to about 2000rpm.i checked for a vaccum hose of but couldn see one and i cleand the trottle body.could this be the idle control vavle if so wher is this located are could it be trouble with the choke.

thanks

 

yea it might be the IACV
here's the DIY:
https://www.hondacivicforum.com/foru...ad.php?t=62836

 

Is the CEL ON?

Did you recently do any work on the engine?

As you mentioned, check carefully for a leaking vacuum hose or connection and clean the IACV as it may be clogged with soot.

Is the coolant level low? Check under the radiator cap when the engine is cool. If the fluid is low, top off and bleed the system of trapped air.

 

no the CEL isnt on.i didnt carry out any work on the car but the car was not driven for a week,it was running perfect before this time but wen i came back to the car this problem was in it.the coolent levels are ok!i wil look for the iacv on my car(differnt engine as in pics) tomorrow and clean it.
thanks

 

If the battery had been disconnected or run down during the period of non-use, it will run poorly for a little while until the computer recalibrates itself.

 

You may also want to check and make sure all your sensors are fitting correctly.