Author Topic: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics  (Read 42863 times)

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DrZux

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Rehash of Bens original and photos I took today.

If your revs are eratic then you may want to try this out, it worked for me.

First loosen the two jubilee clips to disconnect a small section of the air pipe from the throttle body.
Then disconnect the plug from the Idle Control Unit.(ICU looks like a small cylinder bolted to the side of throttle body)

When this is done remove the two bolts that holds it to throttle body. The bottom one is difficult to access with a normal Allen key so i used a screw driver with detachable bits for this. Clamp mole grips to the handle of screwdriver if they are too tight to unscrew by hand. BECAREFULL NOT TO DROP THE SCREWS THOUGH.



The unit is now detached. Now undo the two screws on the unit its self so it splits in two.





Now spray lots of carb and throttle cleaner into the open holes. P.S. WD40 will only oil it carb cleaner will actually clean it out. Fill it up with this spray and then cover all the holes with your fingers and give it a good shake about. Tip left over spray out and see all the black crap come out. Repeat this last step over and over until the inside looks like new.



Now reassemble by reversing this guide.




Offline Trigger

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #1 on: May 19, 2009, 21:05:41 PM »
Topic moved :)

DrZux

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #2 on: May 19, 2009, 21:07:18 PM »
Cheers Trig.

Offline Crawf

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #3 on: May 21, 2009, 17:16:48 PM »
just about to do this, i did this when i 1st brought my car and it does just the trick. car has been stalling when i get to round abouts and traffic lights again so just about to make the most of the weather and do this again. cheers for the quick refresh guide.

Offline steveE

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #4 on: September 28, 2011, 20:13:38 PM »
Hi all,
 I know that this topic has been quiet for awhile, but I am having problems with my Calibra and would like to give this a go and don't think it my question warrants a new topic.

I was just wondering if there is any kind of gasket or seal where the ICV connects to the throttle body or to itself? If so will I need to get replacements for re-assembly?

Thanks for any help.

DrZux

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #5 on: September 28, 2011, 20:57:40 PM »
Yes there is, I've cleaned mine loads and used the same gasket.

Offline sealeysonic

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #6 on: September 28, 2011, 21:04:08 PM »
Topic moved :)

I thought you had been abducted by aliens...?

barrachops

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #7 on: September 28, 2011, 21:33:45 PM »
I thought you had been abducted by aliens...?

That post was edited in 09 Seally.

Trig is no longer a member

Offline steveE

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #8 on: September 28, 2011, 22:12:13 PM »
Yeah sorry about bringing up an old topic.

Yes there is, I've cleaned mine loads and used the same gasket.

Nice one, thank you for the reply. Guess there is no need to worry then, heres hoping that it cures my problems!

Offline DanSE4

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #9 on: September 28, 2011, 22:18:57 PM »
I thought you had been abducted by aliens...?

FAIL!!!!!!!

LMFAO! ;D ;D ;D ;D ;D
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DrZux

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #10 on: September 29, 2011, 01:07:26 AM »
Yeah sorry about bringing up an old topic.
Not a problem, the guide is still relevant.

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #11 on: September 29, 2011, 10:29:40 AM »
is any kind of gasket or seal where the ICV connects to the throttle body or to itself? If so will I need to get replacements for re-assembly?

Yes there is a thin gasket between the two, and whether you need to replace it or not, probably depends on its condition when you remove it. I replaced mine, as it was broken when i did this.
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Offline Chris7B

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #12 on: February 14, 2012, 18:08:42 PM »
This sounds just like what has been wrong with my Calibra _ EMS light comes on sometimes at low revs and engine cuts out at lights etc. Will def give this a go in the next couple of days and feedback. Fingers crossed!

Offline ALZ1307

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #13 on: February 14, 2012, 18:27:14 PM »
Hi Chris, feel free to introduce self in the 'Newbies And Hellos' section, and get some Cally pics up  ;D
Lewis Hamilton said that winning his first race felt better than having sex. Kimi's reply to that was, Maybe he never had sex.

Offline Chris7B

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #14 on: February 17, 2012, 17:44:46 PM »
Have managed to go through this procedure (although I broke the ?*$^&*&^%*&%$*^&  gasket - Doh! so will take great care in future). As predicted, found loads of black gunk in the ICU. Large can of carburretor cleaner (?4)  helped to dissolve a flush most of it out. Have taken motor for a spin - idle revs are much more enthusiastic and steady. Hopefully sorted. Many thanks for the post. My local garage is still using trial and error. :D

Offline ALZ1307

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #15 on: February 17, 2012, 17:54:44 PM »
Happy days  8)
Lewis Hamilton said that winning his first race felt better than having sex. Kimi's reply to that was, Maybe he never had sex.

Offline Davey A

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #16 on: February 17, 2012, 18:07:03 PM »
Anyone got the part number for the gasket?

I'd like one in reserve should I b*llock the existing one.
I'm pleased I fitted a telly in my Calibra. It gives me something to watch when I'm waiting for the RAC.

Offline Chris7B

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #17 on: February 17, 2012, 19:35:12 PM »
Errr! I just bought some gasket card (you need the proper stuff - only

Offline Davey A

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #18 on: February 17, 2012, 19:54:21 PM »
Good call.
I'm pleased I fitted a telly in my Calibra. It gives me something to watch when I'm waiting for the RAC.

Offline Chris7B

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #19 on: April 09, 2012, 17:18:55 PM »
Just a note for anyone else in this position. I also had a hose pipe with a big hole in it that was allowing too much air into the "carb" area, the air flow mass meter needed replacing (go to Vaux-World for an inexpensive replacement and I reckon I had a small fuel leak - other than that ready for F1 :P

Offline smiley55

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #20 on: August 16, 2012, 10:38:58 AM »
I know I should have checked on here first as this has happened to my 2.5i Calibra twice in 6 month, even though Ive had the car for 5 years now. The garage has been good enough to do it for me for ?20 and said its because I dont use the car enough or going on too many short journeys. I only do 1000 miles a year and only about 3/4 miles when I do go out but now I see I can do it myself as they said its at the bottom of the engine. The power either drops off or races as I come to a stop.
Good job I drove old minis as using all 3 pedals at once has really got me home or back to the garage. Thanks

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Offline tranceaddict78

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #21 on: December 03, 2012, 22:12:24 PM »
Gona try this in the morning. See that round thing with like flaps inside it in the first pic...mines all gunked up was wanderin how to clean it

Offline tranceaddict78

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #22 on: December 04, 2012, 10:34:35 AM »
Can any one advise me how to clean it or what.... :-[

Offline DanSE4

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #23 on: December 04, 2012, 14:04:58 PM »
Can any one advise me how to clean it or what.... :-[

What more more do you need to know that the clear pictures & instructions at the begining of this guide don't provide?
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Offline tranceaddict78

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #24 on: December 04, 2012, 14:41:13 PM »
See that round thing with like flaps inside it in the first pic...mines all gunked up was wanderin how to clean it
clearly you cant read dan. Already got my ICV degunked but the bit the airflow pipe clamps round is piggin...can i spray some cleaner into it or is that bad??

Offline DanSE4

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #25 on: December 04, 2012, 14:57:19 PM »
Clearly you need to be a little more clear!

You hadn't said anywhere that you have cleaned out the ICV & "that round thing with the flaps inside it" is the Throttle Body.

Same thing, squirt with carb' cleaner & use a cloth to wipe it. Repeat until clean (or not "piggin") & use your fingers to move the butterfly (the flap inside) to get around that with the cloth.
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Offline tranceaddict78

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #26 on: December 04, 2012, 15:51:23 PM »
Ok...i cant get the flaps to move. Is there anythin i could do to improve throttle response

Offline DanSE4

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #27 on: December 04, 2012, 15:56:04 PM »
You should be able to move the butterfly with your finger, it is sprung loaded though so use a little force.

Only moves one way though, push down on one side of it & if it really won't budge then try the other. If it couldn't move, you wouldn't move either as the throttle cable opens & closes that! It that's filthy then it really needs a good clean out.
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Offline tranceaddict78

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #28 on: December 04, 2012, 17:28:34 PM »
Ok dan ill try that in the mornin!! ;D

Offline DanSE4

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #29 on: December 04, 2012, 17:39:35 PM »
I'm having a complete "brain fart"!

Just move the sprung loaded lever on the side of the throttle body that the throttle cable attaches to, that'll open & close the butterfly.

It's been a long day...........
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Offline tranceaddict78

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #30 on: December 05, 2012, 09:37:14 AM »
Ok ill give ita whirl later on....when the temprature goes up a degree or two outside.

Offline tranceaddict78

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #31 on: December 06, 2012, 11:06:05 AM »
Sortid it and gave the pipes a good clean up idles much better now!! 8)  the other problem is its a big groogy on starting up in the mornins...starter or alternator possibly??

Offline Stasis

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #32 on: January 29, 2014, 08:27:49 AM »
Hi guys,

I usually get my mechanic to do this, but he was unavailable and it was getting close to the stall-when-slowing-down point, so I got some carb cleaner and gave it a go.

After reconnecting everything and starting my engine, it's making a loud high-pitched continuous whistling sound! (and running like arse...). Any ideas of the most likely culprit?

A couple of contenders...

The screws on the ICV unit were too tight to remove (the unit itself, after being removed from the thottle body), so I just squirted the cleaner in as best I could. Pretty sure I got most of it out.

The gasket was in a bit of a sorry state, but I used it anyway as I didn't have a replacement or gasket paper to make one...

The bottom hex screw was a BITCH to tighten, and I'm not 100% sure that it's fully tightened.

Anyone have a good idea of what's going on?

Offline ALZ1307

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #33 on: January 29, 2014, 09:53:50 AM »
Grab a new gasket chap, sounds like an air leak or somesuch to me.

You should always replace gaskets anyway ;)
Lewis Hamilton said that winning his first race felt better than having sex. Kimi's reply to that was, Maybe he never had sex.

Offline Stasis

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #34 on: January 29, 2014, 10:01:34 AM »
Grab a new gasket chap, sounds like an air leak or somesuch to me.

You should always replace gaskets anyway ;)

Yeah will do. Are the liquid 'form-a-gasket sealers' useable on the ICV? I live in New Zealand, so only the option to get the correct gasket is to have it sent from the UK.

Offline Stasis

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #35 on: January 30, 2014, 04:32:51 AM »
Turned out the threads on the lower bolt hole were stripped. Got a slightly longer bolt and it sealed up nice and tight. Dunno how many hours I spent messing with that damn bolt...

And Weet-bix carton gasket ftw.

Offline ALZ1307

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #36 on: January 30, 2014, 15:44:41 PM »
Good work.
Lewis Hamilton said that winning his first race felt better than having sex. Kimi's reply to that was, Maybe he never had sex.

Offline Chalita

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #37 on: May 14, 2016, 00:45:38 AM »
Hi, the pictures are not available any more, is it possible to repost them again?
Regards

Offline ALZ1307

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Re: Guide To Cleaning 16v Ecotec ICV Valve Updated Now With Pics
« Reply #38 on: May 14, 2016, 14:11:56 PM »
Not a chance no.
Lewis Hamilton said that winning his first race felt better than having sex. Kimi's reply to that was, Maybe he never had sex.