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Model specific boards => Golf mk3 => Topic started by: purple nurple on 17 August 2010, 00:56

Title: electronics numpty - vagcom - am i just gonna confuse myself
Post by: purple nurple on 17 August 2010, 00:56
hey
got a 16v '96 with slight running issues, actually runs ok, mostly but revs slow to drop bellow about 1800, takes a couple of seconds for the last bit down to tick over at about 900. is it worth me getting vag off fleabay to try and suss it out, or will i just confuse the hell out of myself, basically i can bolt things on and off, change oil and have a reasonable mechanical understanding, but a bit of a numpty with computers and electronics.
cheers
neil
Title: Re: electronics numpty - vagcom - am i just gonna confuse myself
Post by: Deano2711 on 17 August 2010, 09:08
Try cleaning the throttle body first Mate....do a search on here for how to do it. Will cost you nothing and may well sort this out for you.
Title: Re: electronics numpty - vagcom - am i just gonna confuse myself
Post by: dom on 17 August 2010, 09:42
Try cleaning the throttle body first Mate....do a search on here for how to do it. Will cost you nothing and may well sort this out for you.

+1 that'd be where i'd start  :wink:
Title: Re: electronics numpty - vagcom - am i just gonna confuse myself
Post by: purple nurple on 17 August 2010, 09:43
cheers
did have a look in the end and the butterfly looks kind of snotty on the leading edge,
will give it a go.
Title: Re: electronics numpty - vagcom - am i just gonna confuse myself
Post by: ToddyGTi on 17 August 2010, 13:49
I've always understood it that the ABF is designed to do this (as do a lot of other cars) My one certainly does and it is to prevent low Oil pressure when coming down the rev range quickly. IE Coming off a Motorway.
Title: Re: electronics numpty - vagcom - am i just gonna confuse myself
Post by: MotorPsycho on 17 August 2010, 17:43
aaaah if thats the case then good :) cos I was thinking my throttle cable was probably sticky, rev it and the revs take awhile to drop down fully
Title: Re: electronics numpty - vagcom - am i just gonna confuse myself
Post by: Deano2711 on 17 August 2010, 19:23
If you clean the throttle body properly (which should be part of your routine maintenance anyway) then you will find that the revs will drop as they should rather than pause and then drop.
Title: Re: electronics numpty - vagcom - am i just gonna confuse myself
Post by: purple nurple on 23 August 2010, 18:52
cheers for the advice, done a few more miles in it now with injection cleaner in and seems a little better, if it is a design feature then i dont like it coz you get no engine breaking when you lift off and is just annoying on quick gear changes.
Title: Re: electronics numpty - vagcom - am i just gonna confuse myself
Post by: Deano2711 on 23 August 2010, 19:33
I am now on my third Mark 3 and mine have never done this except for when the throttle body wanted cleaning. After cleaning then everything went back to how it should be.  Try cleaning out your throttle body and you will be amazed at the difference an hours work makes to your motor Mate.