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STEVIE BOY
post 8th February 2019 09:53
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Pretty sure I need a new idle control valve, my revs jump around from time to time. I have the 2.0 146 155ps engine, is there anything strange about the valve or means of controlling the idle, as I'm having a fair bit of trouble finding one online, by just searching for idle control valve.?

This post has been edited by STEVIE BOY: 8th February 2019 09:54
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dante giacosa
post 8th February 2019 10:32
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that's strange Stevie-

eBay is rammed with them; I'd include a link, but i'd want to get the part No. absolutely right before pointing at one

have you tried the old carb-cleaner trick?

Have you got it off the throttle body?
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STEVIE BOY
post 8th February 2019 12:49
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QUOTE(dante giacosa @ 8th February 2019 10:32) *
that's strange Stevie-

eBay is rammed with them; I'd include a link, but i'd want to get the part No. absolutely right before pointing at one

have you tried the old carb-cleaner trick?

Have you got it off the throttle body?



I did clean the throttle shortly after I bought her, that was autumn last year. I can't see the valve , I've had a quick look, just going from same issue I had with my 1998 gtv, I wonder that if they don't have a valve in the same location or same way, as it was the latest gen , with variable inlet geometry,
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dante giacosa
post 8th February 2019 16:49
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the variable inlet stuff is on the OS under the inlet manifold

the idle-valve is 'under' the throttle body

go back through Jeremy's 'resuscitation' thread; I'm sure he's removed it at some point...
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JeremyG
post 9th February 2019 16:58
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Sure - here's a picture of my idle control valve - but don't forget mine is a Phase 1 with the CF1 alloy-top engine.

Attached Image


The Phase 2/CF2 engine has the ECU sat on top of the throttle body so I assume the ICV is in a different location...

This is what the CF1 ICV looks like off the car, showing the Bosch part number so you can exclude that from your parts search...

Attached Image



This post has been edited by JeremyG: 9th February 2019 18:59
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shpuncik
post 9th February 2019 21:19
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ICV should be on the side of the throttle body. between it and throttle body there is o-ring, which sometimes fails and air gets sucked in hence erratic idle
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Ganz
post 9th February 2019 21:56
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I had this problem last year. Before I brought a new one which are cheap enuff I cleaned out my original with carb cleaner. It did the trick and has been fine since.

Attached Image

The offending unit. To be fair it's 23 years old. Sacked loads of carb cleaner into this unit to get rid of the carbon deposits. Used some micro cloth to clean it.

Attached Image

When I separated it the gasket broke. Just made another one using some gasket paper.

Attached Image

This is da one!


--------------------
G A N Z 145

Instagram
ganz145_alfa



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dante giacosa
post 11th February 2019 16:28
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apologies; yes; on the side of the throttle

(I must be thinking of something else...?)
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dante giacosa
post 13th February 2019 09:06
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any luck with this, Stevie..?
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STEVIE BOY
post 13th February 2019 15:05
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QUOTE(dante giacosa @ 13th February 2019 09:06) *
any luck with this, Stevie..?



I think my setup is a fair bit different, being a late model, see pics

It defo needs doing, sometimes it's just a wobble at idle, but sometimes it's like a big dipper, 250 or 350 either way, and almost stalling if I don't get on the throttle. 90% of time its completely normal.

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shpuncik
post 13th February 2019 23:12
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that's the one in the 3rd picture of yours STEVIE BOY

some more pictures from great google: https://www.google.com/search?q=71713829&am...ylkdaYUCS4YYtM:
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dante giacosa
post 13th February 2019 23:40
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That's more like it- that looks like my inlet manifold- ECU on the throttle body

I was sure it was a little more obscure (the ICV)
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STEVIE BOY
post 15th February 2019 07:11
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QUOTE(shpuncik @ 13th February 2019 23:12) *
that's the one in the 3rd picture of yours STEVIE BOY

some more pictures from great google: https://www.google.com/search?q=71713829&am...ylkdaYUCS4YYtM:



Thanks ,cant find a new one anywhere sad.gif
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shpuncik
post 15th February 2019 11:58
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I'd start with cleaning old one and replacing gasket between ICV and throttle body
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STEVIE BOY
post 16th February 2019 15:08
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I'm gonna take it off and give it a clean then, hope for the best!

I will put a few photos on. I have a new MAF to put on as well.
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JeremyG
post 17th February 2019 08:18
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Here's a link to some more blurb about this part, from Alfa Restoration. They're saying Bosch stopped making the part some time ago, so brand new replacements are very hard to come by:

https://alfa-restoration.co.uk/shop/product...roducts_id=1108

... which is a bit of a worry, given how many of these engines there are in circulation...

Has anyone ever bought anything from these guys? They have a lot of NOS items - but they are pricey!

This post has been edited by JeremyG: 17th February 2019 08:21
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dante giacosa
post 17th February 2019 10:09
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it never fails to surprise me how many Alfa-resto places there are!

That's some resource- I was unaware of that one.

280 does seem astonishing: and I see they are sold out.


I pulled one of these off a scrap FIAT recently, thinking it would be useful...
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shpuncik
post 17th February 2019 20:18
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this guy has write up about repairing ICV - main problem worn graphite tracks inside.

https://www.drive2.ru/l/4021174/
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dante giacosa
post 17th February 2019 22:12
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That's bananas-

There's hope for us all!
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STEVIE BOY
post 18th February 2019 11:30
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Got so far with taking the icv off, and realised I need a ribe not a torx, rounded the nut a little, so waiting for some ribe stuff to arrive now.
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