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Model specific boards => Golf mk2 => Topic started by: Davo13 on 10 November 2003, 21:54

Title: Problem with throttle revving
Post by: Davo13 on 10 November 2003, 21:54

Can anyone help?

I've got a mk2 Golf Gti 1.8 8v.  The problem is it some times revs on it's own.  Someone suggested that it's the throttle valve switch that sits on top of the throttle.  Has anyone experienced this before and what can be done about it and if needed were and how much will the part cost.

Cheers

Any guidance appreciated

Title: Re:Problem with throttle revving
Post by: Blue MK2 on 11 November 2003, 09:58

Is your car tuned right? I think the throttle switch is for letting the ECU know that the car is on full throttle.

Mine revs up and down around the 1000-Rev mark. GTi's have an automatic choke to keep the car idle i think

Title: Re:Problem with throttle revving
Post by: golfvr6 on 11 November 2003, 10:41

Which engine is it? digifant or k-jet?

Title: Re:Problem with throttle revving
Post by: richandhazel on 11 November 2003, 17:38

This may help you:-

http://homepage.ntlworld.com/richandhazel1/gti/profix/fuel/isv.htm#ISV

Title: Re:Problem with throttle revving
Post by: Davo13 on 11 November 2003, 18:18

Hey there,

It's a digifant. very strange it only does it sometimes and it usually does it for 5- 10 mins sometimes not even that and then it will stop.  

cheers

Title: Re:Problem with throttle revving
Post by: golfvr6 on 11 November 2003, 18:22

Maybe a problem with the idle stabilisation valve, also as a suggestion maybe get the car on a fault code reader. What does the car drive like?

Title: Re:Problem with throttle revving
Post by: Davo13 on 11 November 2003, 21:58

Cheers for all the pointers so far everyone, much apreciated.

The car drives like new mate sweet as.  It's only done 57000 miles.

Cheers

Title: Re:Problem with throttle revving
Post by: roon on 11 November 2003, 22:11

What's the difference between digifant and k-jet and how do you know which one you have  ???

Title: Re:Problem with throttle revving
Post by: golfvr6 on 11 November 2003, 22:15

K-jets have a fuel distributor(like spaghetti junction) on top of the airbox, digifants don't, they have a fuel rail.

Title: Re:Problem with throttle revving
Post by: roon on 11 November 2003, 22:31

why did they bother to have two types?

Title: Re:Problem with throttle revving
Post by: golfvr6 on 11 November 2003, 22:41

The later type(digifant) is a fully electronic fuel injection system. This the way all cars went in the late 80s early 90s.

Title: Re:Problem with throttle revving
Post by: DimReefa on 28 November 2003, 01:22

Quote from: Davo13 on 10 November 2003, 21:54

Can anyone help?

I've got a mk2 Golf Gti 1.8 8v.  The problem is it some times revs on it's own.  Someone suggested that it's the throttle valve switch that sits on top of the throttle.  Has anyone experienced this before and what can be done about it and if needed were and how much will the part cost.

Cheers

Any guidance appreciated

i had the same problem with my digifant...cleaned the tb out with carb cleaner and it sorted it

Title: Re:Problem with throttle revving
Post by: sKrEwBaLL on 28 November 2003, 11:55

I had precisely the same problem with my 8v digi.  Cleaning the ISV sorted it right out  :)