deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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. . .I've started a thread about this before, but want to get it sorted once and for all.
Is this like to be the IACV bare in mind the Engine Management Light ISN'T ON.
Is there anything else this could possibly be? I've heard people talk about a 'coil pack', but I have no idea what one is etc?!
Is it beneficial to clean the IACV (the sprung part) with something such as carb cleaner? Is carb cleaner the right thing to use?
Any help would be appreciated. Also, with the revs dropping so low and the idling being very lumpy, could this cause any other trouble?
 
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Jake
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Registered: 24th Jan 05
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unplug it, hold it out in front of you and spray a load of carb cleaner of it until it runs clear
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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quote:
Originally posted by jake
unplug it, hold it out in front of you and spray a load of carb cleaner of it until it runs clear
I take it I have to cover up the plug where it connects to the car wiring loom?! 
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Joe
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Registered: 20th Jun 04
Location: Hesketh Bank, Lancashire
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I can't see cleaning it making a difference as its a sealed unit anyway.
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James_H
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Registered: 16th Sep 07
Location: Slough, Berkshire
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If the motor in fooked in the icv, spraying brake clear is gonna do fook all.
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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quote:
Originally posted by Joe
I can't see cleaning it making a difference as its a sealed unit anyway.
What about the sprung bit that works along side the throttle cable?
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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Do does it sound like the IACV, as I don't want to rule out anything else?
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Kenzie
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Registered: 16th Sep 07
Location: Burnley
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Check your fuses. My moneys on that its a yellow one thats blown (cant remember its amperage!)
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James_H
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Registered: 16th Sep 07
Location: Slough, Berkshire
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fuse? yeh prob is the icv, you wil have to get the stepper motor reset at vauxhall aswell proberly.
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Joe
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Registered: 20th Jun 04
Location: Hesketh Bank, Lancashire
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http://cgi.ebay.co.uk/Idle-Air-Control-Valve-Vauxhall-Astra-Corsa-825485_W0QQitemZ230240306301QQcmdZViewItem
As you can see there isn't much that cleaning will do to that.
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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quote:
Originally posted by jahunt
fuse? yeh prob is the icv, you wil have to get the stepper motor reset at vauxhall aswell proberly.
Stepper motor?
I know I can reset the ECU by leaving the battery disconnected for more than 1 hour, however not sure how my alarm will react 
Joe - I guess not.
Been emailing LMF Vauxhall via eBay today (who actually trade as 'VauxhallpartsUK') and they have non-Bosch/GM IACV's that they never have problems with and are warranted. Might give one a go.
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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I've also read on here about a leaky breather pipe & something to do with a vacuum? 
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James_H
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Registered: 16th Sep 07
Location: Slough, Berkshire
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Could be that, give it a quick check over.
Yeh stepper motor is the motor in the icv 
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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One question. . .what is a breather pipe/vacuum system?
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James_H
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Registered: 16th Sep 07
Location: Slough, Berkshire
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You get crank case vacum, and if there is a leak more air gets in to the engine via the rocker and makes the engine idle rough.
http://www.salvagedealers.com/LANCS%20WEBSITE%20IMAGES/VAUXHALL%20CORSA%201.0%20'W'%20009%20WP.jpg
See near the throttle cable to the right there is a pipe going to the top of the throttle body, thats the crank case breather pipe.
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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quote:
Originally posted by jahunt
You get crank case vacum, and if there is a leak more air gets in to the engine via the rocker and makes the engine idle rough.
http://www.salvagedealers.com/LANCS%20WEBSITE%20IMAGES/VAUXHALL%20CORSA%201.0%20'W'%20009%20WP.jpg
See near the throttle cable to the right there is a pipe going to the top of the throttle body, thats the crank case breather pipe.
The bit that goes from beside the 3 bolts in the round plastic thing  to the rocker cover?
The bit circled in green?
And how do you know if it's leaking etc?
[Edited on 23-09-2008 by deano87]
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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Fonz
Premium Member
Registered: 12th May 06
Location: Newbury, Berks
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what have you tried already? no point going in with a big fix if you have tried the small ones
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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quote:
Originally posted by Fonz
what have you tried already? no point going in with a big fix if you have tried the small ones
Nothing, hence why I've posted on here
I don't want to spend out on a new ICV and then have the trouble of that being calibrated to the ECU, if it is simply a pipe that is split or something
Jahunt - is the bit I've circled the bit you were on about?
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Joe
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Registered: 20th Jun 04
Location: Hesketh Bank, Lancashire
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You don't calibrate a new one to the ECU, just fit it and start the car.
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James_H
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Registered: 16th Sep 07
Location: Slough, Berkshire
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yeh thats it!
See if that has any holes in it, if it doesnt, must be the icv, what does it do?
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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quote:
Originally posted by jahunt
yeh thats it!
See if that has any holes in it, if it doesnt, must be the icv, what does it do?
What do you mean? I've described everything it does
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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quote:
Originally posted by Joe
You don't calibrate a new one to the ECU, just fit it and start the car.
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Fonz
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Registered: 12th May 06
Location: Newbury, Berks
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right then first treatment which worked for me and others who i have passed on my wisedom to is the following.
the ICV needs recalibrating. scary? no! disconnect the battery, wait an hour this clears the memory. reconnect, go for a "normal" drive
see
http://www.corsasport.co.uk/board/viewthread.php?tid=44965
the ICV is a constantly adapting unit reset is the first option, then if that doesnt work move on to repair/replacement
you already know about this
http://www.corsasport.co.uk/board/viewthread.php?tid=452304
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deano87
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Registered: 21st Oct 06
Location: Bedfordshire Drives: Ford Fiesta
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I'll give it a go next week, as I definitely need a working car tomorrow and need to read up on the instructions for my alarm 
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