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Model specific boards => Golf mk4 => Topic started by: DMcK on 09 March 2012, 11:00

Title: Funny 1st starting idle revs
Post by: DMcK on 09 March 2012, 11:00: When I 1st start up my car when I have not used it the idle sits at about 1200 revs. It eventually drops after about 5 minutes to normal revs at idle. Does this always happen or is it a problem? I was told it could be an internal choke. I have an AGU Engine.
Title: Re: Funny 1st starting idle revs
Post by: Bish922 on 09 March 2012, 12:46: I've also been noticing this problem and its getting very loud while it sits at 1.2K i just thought it was becuase it has been cold lately :huh:
Title: Re: Funny 1st starting idle revs
Post by: martinGTT on 09 March 2012, 12:49: Does the same on my ARZ engine for about 5mins then drops to normal idling revs......... i just assumed its the choke? :rolleyes:
Title: Re: Funny 1st starting idle revs
Post by: mcgee9t2 on 09 March 2012, 13:06: could be maf related.
or idle controll valve related.
Title: Re: Funny 1st starting idle revs
Post by: DMcK on 09 March 2012, 15:56: Seems quite common. Well hope it's just normal. Must be because the weather. When it warms up might notice a change. Can't see why would be MAF? But then again I don't know much :grin: lol
Title: Re: Funny 1st starting idle revs
Post by: JimBR on 09 March 2012, 16:23: Isn't it the secondary air pump which makes a horrible noise on cold start (like a diesel) then goes off after a couple of minutes? I'm sure there is a How-to with a DIY fix.

Nothing to worry about.
Title: Re: Funny 1st starting idle revs
Post by: asboGTI on 09 March 2012, 16:30: mine did the same are there any flat spots or does it ever bog down i am changing the maf today i am just wait for my lift to get home so i can head up to get the new part
Title: Re: Funny 1st starting idle revs
Post by: tokemk4gti.t on 09 March 2012, 20:39: Quote from: JimBR on 09 March 2012, 16:23
Isn't it the secondary air pump which makes a horrible noise on cold start (like a diesel) then goes off after a couple of minutes? I'm sure there is a How-to with a DIY fix.

Nothing to worry about.

+1 secondary air pump sound horendous on first start up with high revs mines more like a minute tho not 5 :-/ bit seriously makes my car sound like a bag of cack
Title: Re: Funny 1st starting idle revs
Post by: JimBR on 09 March 2012, 20:46: It's 90s I believe not 5 mins.
Title: Re: Funny 1st starting idle revs
Post by: jonnydavies5 on 09 March 2012, 22:03: Iv also got this appening to mine sounds like a diesil when start then goes. Does any1 know what the problem is and how to fix it?
Title: Re: Funny 1st starting idle revs
Post by: DMcK on 10 March 2012, 00:04: Mine don't sound horrible when starting or loud. Its normal. Maybe it is 90s. But everything seems ok just the idle.
Title: Re: Funny 1st starting idle revs
Post by: richw911 on 10 March 2012, 09:57: Quote from: jonnydavies5 on 09 March 2012, 22:03
Iv also got this appening to mine sounds like a diesil when start then goes. Does any1 know what the problem is and how to fix it?

Yep try this (I take it you have an AUM / AUQ?)

Repairing the Secondary Air Pump (Noise on start up)

http://uk-mkivs.net/forums/t/141240.aspx
Title: Re: Funny 1st starting idle revs
Post by: jonnydavies5 on 10 March 2012, 10:57: Ye aum i got and thanks rich
Title: Re: Funny 1st starting idle revs
Post by: AD1.8T on 10 March 2012, 11:09: I will be doing that soon i guess lol! :grin: Cheers mate
Title: Re: Funny 1st starting idle revs
Post by: JimBR on 10 March 2012, 15:00: Did mine this morning. Pretty easy job, just a little fiddly.
Title: Re: Funny 1st starting idle revs
Post by: richw911 on 10 March 2012, 16:35: Quote from: jonnydavies5 on 10 March 2012, 10:57
Ye aum i got and thanks rich

No worries :cool:
Title: Re: Funny 1st starting idle revs
Post by: houston on 10 March 2012, 17:12: 1200 sound good, sometimes mine will jump to 2000 when it really cold outside and i have to use the clutch to bring it down