adjusted idle.. car goes physco?!!

[cornerkid322]

i did exactly what Haynes said, unplug the iacv, then adjust idle screw, and finally removing 7.5 amp fuse for ten seconds. i did all of this properly idling at 850+-50, though now when i drive my car, it surges at 1000-1500rpms. i just cleaned out my iacv, whats the deal?

[jhnyct]

Is it only when it is cold or all the time?

[deevergote]

Tweak the idle screw a little as it's surging, goose the gas, and see if it settles back to normal.

I never did it the "proper" way... But it always worked for me!

[johnl]

How long have you been driving it since you did the work? If it's only a short distance it might just need a little more time for the ECU to 'relearn' it's open loop mapping?

[10thcb7]

what does triggers the iacv to operate

[jhnyct]

I believe it is coolant temp.

[NAiL05]

Before you mess with the idle screw to set anything you need to disconnect the IACV. Next you RARELY need to touch that idle screw. The factory set it their for a reason. If you had idle problems you should start with the basic IACV/FITV if not vac leak. Those will cause idle problems. The idle screw never solves the problem it just prolongs it.

[foamypirate]

OT: Nail, your car looks like a floating accord spaceship in that picture.

[deevergote]

Before you mess with the idle screw to set anything you need to disconnect the IACV. Next you RARELY need to touch that idle screw. The factory set it their for a reason. If you had idle problems you should start with the basic IACV/FITV if not vac leak. Those will cause idle problems. The idle screw never solves the problem it just prolongs it.

Always worked for me

Of course, I don't claim that it's the proper solution. I'm sure it's not. At all.




The best advice here is to let the ECU learn... if it keeps doing it, then adjust some more.

[cornerkid322]

ok, ya ive only been driving it with the idle adjusted for two days, but i did have to turn the screw alot to keep the car running while the iacv was disconnected. ill just try and adjust it again if the problem continues. o and the car is warm when this happens, like after i drive it for 5 minutes.

[camdizawg]

i did exactly what Haynes said, unplug the iacv, then adjust idle screw, and finally removing 7.5 amp fuse for ten seconds. i did all of this properly idling at 850+-50, though now when i drive my car, it surges at 1000-1500rpms. i just cleaned out my iacv, whats the deal?

did you bleed your coolant after cleaning iacv?

[mikesCB-7]

for me i opened the top of the FITV and adjusted the little ring that goes around a center plunger.... while you have it open check that rubber plunger for cracks. then readjust you idling screw. agreed that you shouldnt of had to adjust that idling screw in the first place, you still have whatever may be causing that idling problem whether you adjust it or not.

[jdmwannabe]

Erratic Idle is a common problem, do some basic checks on the car, meter your battery and see that it is putting out fully, my accord had a surging idle when the alt. was on its way out. Check your fast idle valve, 3.50 from a wrecking yard. Also have a dealer flush the coolant, if your coolant develops a "bubble" inside then it can cause a pressure loss and an erratic idle. hopefully this helps.

[Otto]

What procedure did you follow to adjust the idle?
Also wouldn't hurt to check/adjust ignition timing. Like Nail said, the idle screw is the last thing to adjust.
Engine hothothot, unplug IACV, adjust idle to 550+/-50, shutdown engine, replug IACV and seal screw so it doesn't move. One step further: let engine cool completely, restart and let idle (NO throttle, no electrical stuff on, no nothing) till cooling fans come on.

[inferno1414]

OT: Nail, your car looks like a floating accord spaceship in that picture.

haha THAT IS HOLARIOUS.... it does look like a floating cb7.. thats the shit, and everyone knows it. hahaha props... nice picture.