Idle air control valve
3.0 BAR
Joined: Jan 2003
Posts: 1,798
Re:Idle air control valve
Originally Posted by GimpyCivic
This diagram sucks, but see #13? under the TB? That whole the large dingus is the FIV. Fast Idle Valve. It has a thermo-wax plug that when cold.. opens and allows more air into the intake tract to warm the car up quicker/help cold idle. As coolant temp rises the wax expands and closes it. What happens is over time the wax plug gets messed up and it sticks open or closed.. usually open unfortunatly and it plays hell with the idle... especially warm idle since the ECU is then in closed loop operation.
Some FIV's are on the bottom/side of the TB.. some are on the intake manifold itself. It just depends on the year/make of the Honda.
As you can see above I keep 2-3 of these on hand at all times... kinda like igniters and OBD0 distribs :P
I'm thinking about permenatly closing mine... what the bad about that?
0.5 BAR
Joined: Jul 2007
Posts: 52
Re: Idle air control valve
ok so here is what mine is doing. i start my car up then let it sit for awhile hit the brake then it will start reving up and down. sometimes once the fan kicks on it stop reving up and down also. i leave my tubo timer on and walk away it straights out after 20 sec of running. i have clean out the icav ------ card clean around trying to find a vac leak and nuttin any ideas??iwhen im at a light and it starts doing that i can hold the brake and let the clucth out a litt and sumetimes get it to stop reving up and down. could i be having volt probblems?? i am blowing alternator solenoid valve fuses when i drive the ---- out of the car. have a b16a in a ef p28 chipped
thanx
thanx
1.5 BAR
Joined: Jan 2007
Posts: 703
Re: Idle air control valve
+1 i had that same butterfly problem when i had my old skunk2 TB (you know back when skunk2 had the problem that the butter flys would not close on their TB's some stupid factory defect 
) that made my car idle like complete ----
) that made my car idle like complete ----
0.0 BAR
Joined: Nov 2006
Posts: 0
Re: Idle air control valve
Originally Posted by rosario4124
+1 i had that same butterfly problem when i had my old skunk2 TB (you know back when skunk2 had the problem that the butter flys would not close on their TB's some stupid factory defect ) that made my car idle like complete ----
) that made my car idle like complete ----Offhand comments shouldn't go in stickied sections.
Besides everyone knows that skank2 are a bunch of china-hiring-skam-artists-***-*******...
0.0 BAR
Joined: Dec 2007
Posts: 4
Re: Idle air control valve
i know this thread is very old but did anyone check the map sensor because it sounded like your guy's problem. have you guys tried disconnecting the map sensor for awhile to see if it goes back to normal idle?
0.0 BAR
Joined: Nov 2006
Posts: 0
Re: Idle air control valve
Originally Posted by da9wonder
i know this thread is very old but did anyone check the map sensor because it sounded like your guy's problem. have you guys tried disconnecting the map sensor for awhile to see if it goes back to normal idle?
Read how to make your first post.
MAP sensor isn't going to lope your idle, it's going to make the car run like *** at part throttle, or barely idle at all.
