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Model specific boards => Golf mk3 => Topic started by: Liamc11 on 11 May 2016, 00:23

Title: I need help mk3!!
Post by: Liamc11 on 11 May 2016, 00:23

Hi everyone hope someone can help me I own vw golf mk3 2.0 16v abf , it's been sitting for 11months , the battery died , I put a new battery on and it starts but only when I press the accelerator and it will not idle at all , as soon as I let the accelerator off it stalls , what can this be ?

Title: Re: I need help mk3!!
Post by: jimmydub on 11 May 2016, 11:05

read through this:

http://www.golfgtiforum.co.uk/index.php?topic=2080.0 (http://www.golfgtiforum.co.uk/index.php?topic=2080.0)

Will give you some ideas

Title: Re: I need help mk3!!
Post by: toMahawK3 on 12 May 2016, 10:34

Sounds like it's lacking in fuel, possibly the pump, pump relay, or injectors. Seems like it's not holding fuel pressure?

Title: Re: I need help mk3!!
Post by: Liamc11 on 12 May 2016, 11:23

Hi toMahawK3 that's what we thought cause it's been sitting for 11months maybe the injectors have got clogged , but also I found out that the fuel gauge isn't working don't no if this would affect it in any way , but I might just buy a pump relay and see what happens

Title: Re: I need help mk3!!
Post by: lemski on 12 May 2016, 11:45

Unplug the maf see if it makes a difference. Am not that upto date with abf engines. They have a idle control switch on the throttle body, might all need fine tuning as its been sat. Throttle butterfly could be getting cought on corrosion in the throttl body not letting it tick over without revs

Title: Re: I need help mk3!!
Post by: Liamc11 on 12 May 2016, 12:53

Ok mate thanks I'll try that and see the outcome , :)

Title: Re: I need help mk3!!
Post by: Liamc11 on 13 May 2016, 08:55

Tried unplugging the Maf still nothing , I'm really confused , when I'm trying to start the engine it won't fire up on its own , but as soon as I tap the throttle it starts

Title: Re: I need help mk3!!
Post by: Liamc11 on 13 May 2016, 11:41

And also does anyone no if the mk3 gti 2.0 16v abf has a idle control screw , thanks

Title: Re: I need help mk3!!
Post by: Simeon on 13 May 2016, 12:22

No, the idle is controlled by the ecu and the ISV. The ISV may be gunked up - it's located underneath the HT lead holder (3 small bolts to remove this) then check wiring to ISV and if all ok, remove ISV (one small bolt and pull out of the inlet manifold). Spray carb cleaner in it and give it a wipe out.

Has it got fresh fuel in it?

Title: Re: I need help mk3!!
Post by: Simeon on 13 May 2016, 12:23

Also clean out the throttle body and check the vac lines, particularly the one from the inlet manifold to the ECU

Title: Re: I need help mk3!!
Post by: Liamc11 on 13 May 2016, 13:37

Ok Simeon I'll have to have a look I had the isv off yesterday but didn't no how to clean it haha , I haven't emptied the tank and put clean full in , I'd just tried adding fuel and a fuel additive to try make it better , and I wanted to clean the throttle body out but I heard of you take it off you have to have it realigned when you put it back on is this true :)

Title: Re: I need help mk3!!
Post by: Simeon on 13 May 2016, 23:42

No, the throttle is simply hooked up to the throttle cable and all the adjustment is in that.