mk4 golf GTI 1.8 turbo PROBLEM

[popsvw]

Hi all, 

love my golf to bits BUT when started from cold the revs jump about and it splutters for a few mins then it settles,  it starts everytime, 2002 with 139k on the clock,  this has been going on for the last year, its been serviced within the year,   when plugged in no code faults showing up...
 any suggestions ?


 at my wits end

[barrym381]

try cleaning the throttle body or a temp sensor 

[popsvw]

u have replaced the temp sensor already, but not tried the throttle body will do that to start with.

cheers

[skitzasista]

Mine does this from cold start I have found I have a slight leak from the secondary air pump. Does it make a squealy loud noise as its jumping around and revs go up to 1200 the it drops to 900 then goes quiet and settles then drives perfectly? Mines leaking slightly causing this easy to fix just waiting on nice weather to attempt it.

[popsvw]

it does it from cold, its a bit noisier  but no squeal from it...  cleaned throttle body today so here hoping tomorrow from cold it will be fine  fingers crossed !!!!

away to wash the dirt off me now !!! not a good look for a girl lol 

[barrym381]

what part of Scotland are you in 

[popsvw]

im in fife  x

[barrym381]

im in fife  x

would have gave it a scan if you were closer to see if any codes popped up you might want to buy a cheap reader if your keeping the car 

[popsvw]

ive had it plugged in more times then ive had hot dinners lol  no code faults are coming up .....

got a guy who does really tec computer stuff with cars but hes £40 an hour.... might take 1 might take 4.... just dont fancy spending that....lol

[barrym381]

open the bonnet and start it from cold see if there is any noise coming from the bottom left of engine bay as you look in from front of car