Another Idle Problem Thread....

[Joey GT-R]

Stoner I don't have anything to "bracket" it to. I wish I did. But yea it just kinda sits on the runners for now. The S2 Mani is a PITA to take off and on so I kinda just let it be. When I attempted to clean the IACV I disconnected it completely, then reinstalled it. I really think this is the problem. The charcoal cannister, egr, and the other black box thingy haven't been on this car for years, so I doubt their absence after all this time would create a problem. But I will check the FITV last since I was looking at that water myself in the video and in person. I'm going to give it a another day though because we did have some heavy rain and it's cold so that might just be from running through puddles.


I'm going to try to find ouit if someone has one I can use first, since I would rather not waste $250 on a part I don't need. Especially if I can't return it.

And guys if you watched the video and still don't know what engine I have....well.

[Stoner51]

If your tuned for the s2 manifold leave it.

You can take a volt meter and check the IACV. My thinking is it that it may not work due to the fact the it is just resting there and get vibrated when the car runs.

I would normally say these dont go bad they just need to be cleaned but with it just hanging there I think this may be one that is bad.

Disconnect it and see if any thing changes. It's easy and cheap. If the idle drops that may not be your problem. The IACV adjusts the idle based on the engine load so make sure you have nothing on when checking it. When I say disconnect I mean the elecrical plug.

Steve

Yeah I thought that plug just pulled out the excess gas fumes.

[Accord problems]

dude probably had something to clog it but it got suck in.

you tube.http://youtu.be/9io3_pxpibM

[Joey GT-R]

If your tuned for the s2 manifold leave it.

You can take a volt meter and check the IACV. My thinking is it that it may not work due to the fact the it is just resting there and get vibrated when the car runs.

I would normally say these dont go bad they just need to be cleaned but with it just hanging there I think this may be one that is bad.

Disconnect it and see if any thing changes. It's easy and cheap. If the idle drops that may not be your problem. The IACV adjusts the idle based on the engine load so make sure you have nothing on when checking it. When I say disconnect I mean the elecrical plug.

Steve

Yeah I thought that plug just pulled out the excess gas fumes.

So start the car with it disconnected. When you say nothing on, no radio/lights/etc correct? What should or shouldn't happen?

[Stoner51]

No. Let the car warm up. Then disconnect the IACV. See if the idle changes

Steve

[Joey GT-R]

Here's the update:




So what now? The car was warmed up and it idled "perfectly". I removed it and the idle did not change but of course I threw a CEL. Is that meaning it's faulty since idle was unaffected?

[Accord problems]

take well its plugged in tap it with a screw driver see if idle changes . give it straight power from the bat see if it works . butt i still think its that tube .


check engine light came on because it did not read it no more.

[dj_ender]

So what now? The car was warmed up and it idled "perfectly". I removed it and the idle did not change but of course I threw a CEL. Is that meaning it's faulty since idle was unaffected?

Sounds like your base idle is way too high.

[Joey GT-R]

Base idle as in the idle set in the ECU? 850rpm is too high?

[dj_ender]

Yes, it's high. OEM spec is to set it at 600 with the IACV disconnected, then upon reconnecting it should jump to 700-800.

[Joey GT-R]

I'll take your word for it, but I'm a little confused on how that logic relates to my issue. Are you thinking the IACV is bad?

[dj_ender]

I'm going off personal experience, when i had my idle set above spec, the idle wouldn't change when i unplugged it. When I set it properly, idle drops like it's supposed when I unplug it.

[Joey GT-R]

So in other words to reset base idle I would have to retune.

[Stoner51]

Yes. When I disconnect my IACV the idle drops. So its possible the IACV does not work.

Or like DJ said your base idle is set too high.

No you don't need a retune. You need to set your base idle. warm the car up. pull the IACV set the idle to 600 with the screw on the the TB.

Your base idle is set too high. the idle should drop. My bet is somebody jumped up the idle to compensate for a bad IACV.

steve

[dj_ender]

You can test the IACV with a DMM, set it to ohms, test the pins on the IACV, it should be between 8-15 ohms and not fluctuate more than .01 or so.