[CL9] Rough Idle

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I have a 2003 CL9 and my idle plays up quite a bit.

What happens is that when idling it is fairly rough bounces from about 700-1k and drastically worse when aircon is on. It never stalls but being a manual the eratic idle makes it annoying (not hard just annoying) getting in to 1st gear. Also if i keep the revs up to 1k then it works perfectly. It also makes the car very loud but when driving normally all is good.

No just going to bounce a few ideas of everyone see what they think.

I put my stock airbox on a few months ago and it seamed to stop not sure if it was a placebo effect or actually worked. No the only thing i could think is that the vacum hose the is removed and put on the new CAI, Could this be a cause of rough idle due to not being fully sealed within the CAI and letting air from in the engine bay.

I have tried resetting the ECU and this did not work.

Could it be possible that the fuel pump is not pumping enough fuel in when idleing.

Any help or ideas would be great

[white_ep3_civic]

How many k's on the car?

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180,000kms

[shmivic]

start with the basic's.
spark plugs, oil etc.

which vacuum line is missing?

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I just done the oil last week next week will be ordering spark plugs from the states to put in when they arrive and there is no vacuum plug missing just can be pulled of fairly easy so I'm assuming that there is not a tight seal on the plug ill take photos tonight

[djpro1]

Did you set up the CAI as a Short Ram or Long ?

Perhaps throttle body needs a clean?

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Ok ill try that soon and it is long and is in where the resonator was and have cut holes in the fog light covers for airflow there r no fog lights so just that plastic cover... hmm ill clean the throttle body what spray could I use.

And recently its been a lot better just when aircon is on it gets so annoying could this be the accessories belt?

[aaronng]

Check your service history. How many kms does your Euro have and was the fuel filter changed every 80,000km?

[HunterZero]

Surging idling is usually an intake air issue.

- HZ

[djpro1]

Question - what brand cai is it? Is the pod filter new?

Was the o2 sensor attached properly? I had to tape mine as it loosely plugged in to the cai piping

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Question - what brand cai is it? Is the pod filter new?

Was the o2 sensor attached properly? I had to tape mine as it loosely plugged in to the cai piping

JTune CAI, both bought last year so about so pretty new.

Hmm not sure if the o2 sensor is attached properly i made a quick video of how easy it was to pull one of the plugs off.

http://www.youtube.com/watch?v=hexYRLjg5iI

Is this normal or not?

And this is the pic of the one i pulled off

http://i301.photobucket.com/albums/nn69/marquee6943/IMAG0057-1.jpg

The one just below cannot be pulled off at all it needs to pry off with a screw driver.

I will check how hard the o2 sensor is to come out will see how if covering fixes it.

and aaron the fuel filter was changed about 15000ks ago how long do they normally last.

Once i pulled the afore mentioned plug up so it is semi hard to pull off it seams to fix it maybe i might get one of those clamps see if that sorts it out but any other ideas would be great

[djpro1]

That's normal although my hosing looks different to yours. I'll take a picture when I can and show you my setup.
Also looks like your running super low on radiator fluid :P

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oh that was ages ago i was just installed my intake gasket so it was every where i refilled it man :) cheers for the concern

[Fredoops]

clean your engine bay dude.
you cant believe what kind of gunk i flashed outta mine.

but.
do not use a degreaser. And look up on how to do it properly

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I tried to Google it every where says use degreaser hmmm maybe ill try to autobarn or something

[Fredoops]

I tried to Google it every where says use degreaser hmmm maybe ill try to autobarn or something
Worst case senario, get it professionally steam cleaned.

PS:
about seafoam..
http://www.tsxclub.com/forums/1st-gen-car-care/29168-diy-seafoam-treatment-cleaner-engine-better-mpg-more.html

some people say it's snake oil and other say it's the best thing on earth, it makes a LOT of white smoke. SWEEET.

[aaronng]

and aaron the fuel filter was changed about 15000ks ago how long do they normally last.


They last 80,000km, so the fuel filter is not causing the problem. I reckon it was that loose tubing from the CAI into the head. Just get a 50 cent hose clamp from bunnings and tighten it up.

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yer will do tonight and let you know the results.

seems to be doing it again so it has to be that once it gets loose.

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I put the hose clamp on last night fixed it completely when air con is off. How ever I did notice when the aircon comes on it still idles rough and also when idling and dry steer it does the same thing is it the accessories belt maybe

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Doing a bit of research looks to be the idle control valve but can't buy a new one from Honda need a whole new throttle body 1300 stuff that ill just clean mine see how it goes

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Ok im getting close to fixing the problem. It must be my electrics because even when my lights on its reving crappy.

Now im going to be doing a ground wire kit if not what other options could i check before having to replace the alternator?

[HunterZero]

Did you end up cleaning or replacing the IACV? Have you tried resetting the ECU? This resets the fuel trims. Let the car idle for 20 mins or so and it should re-learn.

- HZ

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Nah man gotta take off my throttle body to get to it so going to get a new gasket and p2r spacer then ill clean it I'm not sure if I need both or just one though