Idling Issue - Honda Prelude Forum

<h22a4> · 05-17-2006, 11:56 PM

My current build sure has its share of troubles.

AFter my sk2 im and rc 370cc injectors were thrown in, it seems that my car doesn't want to idle properly. currently, my mechanic has disconnected one of the vaccumm hose i believe to allow more air to go in the im for it to idle. the design of the skunk2 im has idling issues believe. I am also using the s2000 tb.

anyone else have skunk2 im ilding issues and what have u done about it?

secondly, would there be a way to increase the air entering the im during idling?

while driving, the car is fine.... problem is at idle, it would only idle properly if we disconnect the hose, and once connected, it'd die

thanks

i appreciate all the inputs i'm getting regarding this and the crome thing, and the thing about e-manage..... thanks guys

sharkcohen · 05-18-2006, 12:01 AM

Is your idle air control valve hooked up properly?

<h22a4> · 05-18-2006, 01:39 AM

it should be, ray did it for me, but tommo i will go back to have a look at it,

i want to correct eyverthing before i go tune this thing

xlr8r · 05-18-2006, 07:22 AM

If he did leave a vacuum line open that's going to create some idling issues. I'm not familiar with S2K t-bodies but you should be able to adjust air input on the T-body. If you can't, adjust it by adjusting the throttle plate stopper to make it stop a little more open.

The other possibility is the fueling needs some adjustment.

alphajesse · 05-18-2006, 12:49 PM

It dies? Does it hunt or anything, or just die?

Artifex · 05-18-2006, 01:17 PM

Quote:

Originally Posted by <h22a4>

AFter my sk2 im and rc 370cc injectors were thrown in, it seems that my car doesn't want to idle properly. currently, my mechanic has disconnected one of the vaccumm hose i believe to allow more air to go in the im for it to idle. the design of the skunk2 im has idling issues believe. I am also using the s2000 tb.

Make sure that the TB actually fits the IM. I've never heard of an S2K TB fitting a S2 IM, that's new to me. If you don't, you get strange air leaks and sh1t won't run right.

Normally, idle is controlled via the IAC. This requires ECU tuning (emanage can't do this BTW). Also make sure your IAC is hooked up correctly. It is possible that you have a fueling issue, which is also fixable via ECU tuning.

<h22a4> · 05-18-2006, 06:03 PM

After going there today,

we discussed some options along with Ray, Grant and Douglas (somboa) and we believe it is most likly due to the design of the Skunk2 manifold relocating the IAC which makes it more difficult to idle properly due to the further distance of the IAC to the manifold. This combined with my 370cc larger injectors, is is throwing too much fuel at idle and running too rich. At the vaccum hose is off, the car would not even start if its cold, if its warm, it may start, run a bit, hunt a bit, and then die.

we discussed adjusting the TB to leave it open a bit, but was told that it would throw off my tune.

Best thing now is to try to take out some fuel at idle and see if it idles. i'll keep this posted.

going for the crome tune next thursday. will be street tune + dyno tune

sharkcohen · 05-18-2006, 07:12 PM

Quote:

Originally Posted by Artifex

Normally, idle is controlled via the IAC. This requires ECU tuning (emanage can't do this BTW). Also make sure your IAC is hooked up correctly. It is possible that you have a fueling issue, which is also fixable via ECU tuning.

If the IAC is hooked up correctly, there wouldn't be anything the E-manage would need to do. The stock ECU would continue to operate it normally as it should.

sharkcohen · 05-18-2006, 07:14 PM

Quote:

Originally Posted by <h22a4>

we discussed some options along with Ray, Grant and Douglas (somboa) and we believe it is most likly due to the design of the Skunk2 manifold relocating the IAC which makes it more difficult to idle properly due to the further distance of the IAC to the manifold. This combined with my 370cc larger injectors, is is throwing too much fuel at idle and running too rich. At the vaccum hose is off, the car would not even start if its cold, if its warm, it may start, run a bit, hunt a bit, and then die.

But how is the IAC hooked up? And have you considered that your basemap on your p28 may be the problem?

<h22a4> · 05-18-2006, 07:28 PM

^ yes ---- the basemap that is currently on the p28 sucks, car drives like shiet... gotta have eyvetrhing tuned peorply next tursday

alphajesse · 05-18-2006, 08:21 PM

You Should Not Be Driving The Car On A "basemap" Or The Stock P28 Program.

sharkcohen · 05-18-2006, 08:25 PM

Quote:

Originally Posted by <h22a4>

^ yes ---- the basemap that is currently on the p28 sucks, car drives like shiet... gotta have eyvetrhing tuned peorply next tursday

Then that's why it's idling like ****.

<h22a4> · 05-18-2006, 08:27 PM

Quote:

Originally Posted by sharkcohen

Then that's why it's idling like ****.

it was the same with the e-manage,

but the thing is, we can't really pinpoint whether its the injectors that is pushing too much fuel in that is the problem, or the intake manifold that is restricting air during idle that is the problem.....

both would result in a bad idle.....