mk1 golf gti 1800 8v not running right

[Harry5]

hi i'm putting this message up for my friend
he's got a mk1 golf gti 1800 8v and it starts revving high by itself. he has changed the throttle body and it keeps doing the same thing. anyone had this problem? anyone have any ideas?

[SoundillusioN]

Did he just go straight for the kill and change the throttle body or were other things looked at first!... bit rash doing that??

Does it rev high as soon as it starts or once its warmed up?  how high and does it just sit at the same rpm? it could be something simple like the timing is wrong, faulty warm up reg, bad mixture................. 

[Harry5]

hi
he said that the car will run fine hot and cold but as soon as he puts this foot down it just starts revving between 2 and half and 3! any ideas? thanx

[kraM]

sticky/frayed throttle cable,

disconnet each end and make sure it runs smoothly. 
Failing that it has a monster air leak from some where, let it idle, then with small sprays of wd40 spray around the inlet side of things, in order, if the revs change doing this, the air leak is somewhere in that area...
Oh and don't spray too much on the exhaust/dizzy cap/plugs etc, engine fires suck...

Cheers

kraM