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Model specific boards => Golf mk4 => Topic started by: rfn_hodgson on 07 July 2012, 15:47

Title: is this normal??
Post by: rfn_hodgson on 07 July 2012, 15:47

is it normal for when the car starts from cold it revs at 1100 rpm at idle for about 5 mins and then drops slowly down to around 900 rpm??

Title: Re: is this normal??
Post by: rfn_hodgson on 07 July 2012, 15:47

by the way its a 1.8 turbo auq

Title: Re: is this normal??
Post by: Granta Gti on 07 July 2012, 16:13

Yes its the automatic choke

Title: Re: is this normal??
Post by: turbokid23 on 07 July 2012, 16:20

Mine does the same sounds like a jet when I 1st start it

Title: Re: is this normal??
Post by: mcgee9t2 on 07 July 2012, 18:09

not for 5 mins no. or not that i know of...?

is the idle rough? i.e bouncing around between maybe 1050-1100 or something?
could be dirty tb? or maf?

Title: Re: is this normal??
Post by: JimBR on 07 July 2012, 20:19

As said. Should be about that for 90 seconds or so. My gauge sits at just under 800rpm when warm.

Title: Re: is this normal??
Post by: stfc_gti on 07 July 2012, 21:06

secondary air pump on mine is loud for about 30 seconds

Title: Re: is this normal??
Post by: Wayne on 07 July 2012, 22:31

Normal but not for 5mins, mine drops down after about 30 seconds.

Title: Re: is this normal??
Post by: turbokid23 on 07 July 2012, 22:39

mine drops down after bout 40sec

Title: Re: is this normal??
Post by: cullygti on 07 July 2012, 22:52

50 secs here  :grin:

Title: Re: is this normal??
Post by: Steve_PD on 07 July 2012, 23:11

well you're all wrong it 25.87 seconds :tongue: god bloodly amateurs  :rolleyes: :grin:

Title: Re: is this normal??
Post by: cullygti on 07 July 2012, 23:16

do you think mine is broke then  :lipsrsealed:  :grin:

Title: Re: is this normal??
Post by: mcgee9t2 on 07 July 2012, 23:57

bout 20 mins for me  :grin: but thats due to a dirty tb and a dodgey maf  :sad:

Title: Re: is this normal??
Post by: AD1.8T on 08 July 2012, 00:00

 :laugh: youve all sat there and timed it ????

Title: Re: is this normal??
Post by: cullygti on 08 July 2012, 00:02

i was joking dont know about the rest  :grin:

Title: Re: is this normal??
Post by: turbokid23 on 08 July 2012, 13:47

Check out intestine.  :grin:

Title: Re: is this normal??
Post by: DunnDeal12 on 08 July 2012, 16:29

Quote from: cullygti on 07 July 2012, 23:16

do you think mine is broke then  :lipsrsealed:  :grin:

fit a TT ARB to solve this. :laugh:

Title: Re: is this normal??
Post by: Xtrhardcore on 09 July 2012, 11:55

Quote from: DunnDeal12 on 08 July 2012, 16:29

Quote from: cullygti on 07 July 2012, 23:16

do you think mine is broke then  :lipsrsealed:  :grin:

fit a TT ARB to solve this. :laugh:

LOL!! Generally made me laugh then..

But +1 to the auto choke problem, mines a filthy TB and MAF too :wink:

Title: Re: is this normal??
Post by: rfn_hodgson on 10 July 2012, 10:18

i cleaned the TB the other week but was still doing it.....

and its still doing it now.

so your say that i may need to give the MAF sensor a clean then??

Title: Re: is this normal??
Post by: big stevie on 10 July 2012, 12:11

mine makes a wooshing noise on start up like a jet and ticks over about a 1000 revs and goes on for around a min and then drops down to 800 revs and ticks over nicely, thought it sounded quite strange when i first started it from cold when i bought it only found out from reading on here its normal for the strange noises, hmmm auto choke didnt we have them on old cars that used carbs are thay not called cold start valves on fuel injected cars pmsl  :smiley: :smiley: :smiley:

Title: Re: is this normal??
Post by: GTi_James on 10 July 2012, 12:19

as i understand it there shouldnt be any issues, and you can drive away whilst its still "warm revving" as my mech put it otherwise your burning fuel?

dont know if this is stricktly true?  :undecided:

Title: Re: is this normal??
Post by: km on 10 July 2012, 22:30

think mine is about 20 mins or so as well? actually, it's never below 1k. :undecided:

clean tb and maf is new too :huh:

Title: Re: is this normal??
Post by: Dalo Harkin on 10 July 2012, 23:30

Mine doesnt do it at all  :wink:
one of the best mods getting rid of it  :smiley: