blkcivic310

hey guys i have a 95 civic with a 97 gsr its not throwing any codes just smogged it not to long ago and last week when i go start it to warm it up it runs smooth for about a minute or two then it sounds like it wants to cut off then kicked itself back up over and over now this week its been bouncing from 1k-2,5k need help what to check any idea will help alot thanx

b18c_Ek101

it sounds like its the idle air control valve. besides it not keeping a constent rpm at idle does it run fine when your driving?

Markley02

With the car running and idle bouncing, take off the intake piping. There are two holes inside your throttle body. Cover up the bottom hole with your finger. If it stops bouncing it is your FITV. If that doesn't work, cover up the top hole. With the top hole covered the engine should die. If it does die it is most likely your IACV, but could also be your TPS. If both holes are covered and the engine still runs, you have a vaccum leak somewhere. Break out the carb cleaner and spray areas that might be leaking. When the idle jumps that is where your leak is.

blkcivic310

yea the car runs fine while driving thanx for the info i will try that today

Sprmario

I have the same issue but it will calm down after a while but i know my TB gasket has a break in it and needs to be replaced. use the carb cleaner and you'll find exactly where the leak is, gl!

EgUnoGodfather

The FITV is a big issue ppl just look over i never even thought of just cleaning it and re screwing it alll the way back in their would of fixed my idle.

Markley02

Although the effects of screwing the FITV all the way in aren't that bad (still have them myself because I am to lazy to take the thing back off). Stock is 1.5 turns out from being all the way screwed in.

If it is all the way screwed in, for the first 30 seconds the car is running, If you suddenly let go of the gas the engine will come close to stalling.

After cleaning and screwing in my FITV, replacing my IACV, I finally realized my TB was so dirty that the butterfly wasn't making a good enough seal. Technically a vaccum leak I guess. lol.