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Model specific boards => Golf mk2 => Topic started by: rids on 07 February 2014, 19:14

Title: revs high on idle speed unless throttle blipped
Post by: rids on 07 February 2014, 19:14

as title, (8 valve digifant) revs hang on sometimes as car goes to tickover, if i blip throttle revs fall to idle speed.
I've fitted a brand new idle stabilisation valve but it hasnt changed anything. If i blank off both hoses to valve, once car is warm it runs great.  anybody any ideas??

Title: Re: revs high on idle speed unless throttle blipped
Post by: gazareth on 07 February 2014, 20:28

could be your throttle cable or linkage sticking.

Title: Re: revs high on idle speed unless throttle blipped
Post by: rids on 07 February 2014, 21:11

It's nothing as obvious as that

Title: Re: revs high on idle speed unless throttle blipped
Post by: oakgreener on 08 February 2014, 15:51

Mine does this occasionally and has done so for some time. I've never found the reason for it so would be interested to hear any theories. I've got used to dropping the clutch slightly to bring the revs back to around 850.

Title: Re: revs high on idle speed unless throttle blipped
Post by: rids on 08 February 2014, 17:36

Mine runs perfect with the idle stabilisation valve isolated and the hoses blanked off. My gut feeling is its an electrical fault

Title: Re: revs high on idle speed unless throttle blipped
Post by: Gambit on 08 February 2014, 18:38

Check the throttle closed switch on the throttle body