My car idles at almost 2k until i come to a stop where it will fall down to 1100-1300. I have obviously adjusted my idle set screw and that isn't it. I was told it was something to do with the IACV but I've never really messed with one of those and I wanted some insight before I went screwing around with it. The more info the better.

Thanks

 

does it do this when you first start the car in the morning?

 

It only does this after the car reaches normal operating temperature. During cold startup it idles really low and sometimes dies.

 

To clean your IACV: Remove it, clean it thoroughly with brake cleaner, let it dry, reinstall it, may work or may not...

 

i've found that throttle body cleaner works better than brake clean...

 

What do I clean and is there any parts of it that come apart for cleaning. How about anyway to check to see if its good?

 

Someone also told me once that there was something i needed to adjust inside it? I don't know anything about these really. Any wiring problems that could cause this?

 

http://www.g2ic.com/forums/sho...42969

try this link....it sloved my idle problems....hope it helps you out!!!

 

Did you disconnect the IACV when adjusting your idle? I believe the helms manual will tell you to do this and it does make a difference. If you can get your hands on a Helms manual, make sure you are using the proper procedure to adjust your idle.

 

Taken from Lyonel's web page:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">For whatever reason you come to a stage where you need to adjust your idle, here are the correct procedures.

Extracted from Helms workshop manual - Thanks Tek!

1. Start the vehicle and let it warm up to normal operating temperature. Cooling fan should come on.
2. Connect a tach gauge.
3. Disconnect the 2P connector on the IACV unit. (Refer to Fig 1.1)
4. Adjust the idle screw on the throttle body. B16a engines - with no load, the idle should be 700rpm +/-50rpm. (Refer to Fig 1.2)
5. Turn the engine off.
6. Re-connect the 2P connector on the IACV unit. Reset the ECU by removing the fuse under the hood for 30 seconds.
7. Restart the vehicle again with no load. The idle should now be the figure you set previously in step 4.


Fig 1.1
Fig 1.2

Throttle Position Sensor (TPS) Adjustment

Most probable causes of inconsistent and fluctuating idle are vacuum leak(s) and faulty TPS voltage output. Here are the correct procedures for the TPS adjustment.

1. Follow the wiring harness from the TPS to the back of the intake manifold and remove it from the firewall. This will give you more room to probe the electrical terminals. (Refer to Fig 1.1)
2. Turn the ignition to the 'on' position. Using a voltmeter, check the voltage from the TPS electrical connector. It should read approximately 5.0 volts.
3. With the throttle fully closed and TPS connector connected, connect the probes of the voltmeter to the positve and ground wire. It should read approximately 0.5 volts with the throttle valve fully closed.
4. Slowly turn the throttle valve and see if the voltage changes as the sensor travels from idle to WOT. The voltage should increase smoothly to approximately 4.5 volts.
</TD></TR></TABLE>

 

Ok, I did this and I've gotten the idle to settle around 1k now but that is as low as it would go. I'm pretty sure I should be able to get it to idle lower than that, correct?

 

i have a wndering idle too, does anyone know what the five point screw in the side of the IACV does?

 

Hello,

I need help. Last night while driving home I slowed down down shifted into first to park. And all of a sudden my RPM'S went high and almost red lined. Fortunately I saw it and turned the car off immediately.

Now, when I start the car, i idles at 3 thousand RPM'S sitting still in neutral and first gear. If it helps. Yesterday I had a guy repair my steering and he had to take the air filter off as well as other stuff. My car is a 2001 Honda Civic.

Any help would he appreciative.