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Author Topic: Idle when cold  (Read 1205 times)

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Dawes

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Idle when cold
« on: 21 February 2009, 22:28:20 »
Hi Guys, just bought my 2.5 V6 Omega and I'm really pleased with it but I do have one small concern. When cold the engine can rev a little all by itself although this does not happen when warm. Would this be fairly common with the V6 (petrol)? I'm hoping it's something simple like airflow but I'm a bit of a joke when it comes to spannering so would appreciate any pointers in the right direction.
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iainb

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Re: Idle when cold
« Reply #1 on: 21 February 2009, 22:40:49 »
Just have a look at the ICV  air pipe for small hole's,as they seem to confuse the engine ecu.
Also check the intake pastic air pipes for signs of cutting from the retaining clips.
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Entwood

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Re: Idle when cold
« Reply #2 on: 21 February 2009, 22:55:18 »
Have a gentle spray around with a bit of carb cleaner, if/when the engine note changes you have found the area of a vac leak ... really does help pinpoint leaks ... once you've found the leak, wipe down with paper towel and you also have a really nice clean engine .. :)  then fix the leak .. :)
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feeutfo

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Re: Idle when cold
« Reply #3 on: 21 February 2009, 23:43:56 »
Quote
Hi Guys, just bought my 2.5 V6 Omega and I'm really pleased with it but I do have one small concern. When cold the engine can rev a little all by itself although this does not happen when warm. Would this be fairly common with the V6 (petrol)? I'm hoping it's something simple like airflow but I'm a bit of a joke when it comes to spannering so would appreciate any pointers in the right direction.
Just trying to remember the idle speed when cold, about 900 rpm? Something like? Would an air leak only show when cold?
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old git

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Re: Idle when cold
« Reply #4 on: 21 February 2009, 23:49:59 »
don't know if the same but on the senny's they would run a bit faster on startup ,it was to warm the cats up  haven't noticed it on the mig maybe it's the norm to me.
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Tawfield

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Re: Idle when cold
« Reply #5 on: 22 February 2009, 00:22:19 »
Mine runs at 1000rpm when very cold drops quickly warm morning just tad over tickover,ecu controls it.
Would be looking for probs if the revs did`nt settle when warm.
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AndyVXR300

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Re: Idle when cold
« Reply #6 on: 22 February 2009, 11:26:56 »
Where exactly is the idle control valve on a v6 omega as i need to clean mine out ? also if there is a how to guide on here can someone put the link on also... thanks
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albitz

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Re: Idle when cold
« Reply #7 on: 22 February 2009, 11:51:56 »
http://www.omegaowners.com/forum/YaBB.pl?num=1189893355
Left of the oil filler,silver cylindrical thingy.Take it off,blast the inside with carb cleaner,put it back.Takes about 10 minutes. :y
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