IACV Screw...
 

typo - i meant the iacv!

My question is when you turn it clockwise shouldn't it raise your rpm? Even a 100th of an rpm? I must have turned mine 4-5 full clockwise turns and my idle is 600-700, 900 with a/c on. I installed hid fogs and with my hid headlights on my rpm falls to 500 then up again so i want to prevent this and raise it up a little. Is my tb and iacv dirty and that's why it doesn't do anything?

Turning the idle screw clockwise decreases. Counter clockwise increases. Think of it as loosening is letting more air in for higher idle. I'd start with cleaning the IACV real good.

You have to unplug a couple of connectors to make the adjustment.. One is brown and the other is right next to it. I found this pic off of here somewhere. See the 2 plugs circled, unplug them then make the adjustments. Make sure the engine is warmed up to operating temp.

http://i47.photobucket.com/albums/f1..._97/1113-1.jpg

Why does he have to unplug it? I just adjusted mine 3 days ago. I did it with the car running to get it adjusted where I wanted it. Besides, those plugs are on the TPS anyway. The IACV is the big gray plug behind it surrounded by the pink and purple plug.

That is the correct way to adjust your idle.

Warm up the car, shut down, unplug the tps, start car, let the idle drop a bit, adjust idle with the screw on the iacv, turn off car, reconnect tps, start car, fine tune with screw on the iacv.

Did you fix it?

no, this might seem funny but i forgot which sensor is the tps and didn't feel like getting flamed so i never asked lol... the tps is the grey one or the brown one? I feel retarted as i've cleaned my TB twice and removed my iacv... :wall:

the TPS is the black sensor mounted on the side of the throttle body. Both of the harness/plugs circled in that picture connect to it. You would unplug both of these. I am having IACV issues as well and unplugged my TPS yesterday only to watch my idle shoot up to 2k. To me this didnt seem right, and my IACV screw was already maxed out clockwise. I heard your supposed to adjust the throttle stop screw at this point...and I may go try that since I'm running out of ideas.

No, with the TPS disconnected you set the default throttle body stop set screw, not the IACV. You adjust the IACV with everything pulgged in and running.

That information can be found in the FSM and I believe Haynes has it too.

wait so your saying i don't need to disconnect the tps? I don't need to adjust anything related to the TB. I just want to raise my rpms 1-200 hundredths, so instead of my normal idle at 600-700 i want to raise it to 800-900. Wouldn't just adjusting the iacv fix this?

Where exactly is the throttle body stop set screw?

I can't find any info on the TB screw anywhere in the FSM (I'm sure it's there but the FSM isn't really user friendly).

However, based upon what I read in the FSM with regards to adjusting idle, it says to run the engine, turn off the car, disconnect the "throttle position sensor" which is the brown connector (pictured above), turn on the car and then adjust the "idle speed adjusting screw" which they have pictured as the black plastic screw sitting atop the IACV. Is this incorrect?

Yes, not sure why the throttle body set screw was mentioned. You only want to adjust that in extenuating circumstances, you should really only ever need to unplug the TPS and use the black IACV screw.