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Model specific boards => Golf mk4 => Topic started by: luke on 26 June 2013, 23:49

Title: Mk4 agu not starting
Post by: luke on 26 June 2013, 23:49

Car started when I finished work but cut out a few seconds after, tried bump starting it but no avail, then tried with battery booster which didn't start first time but after a minute did, ran fine and changed the battery then tonight, driving home it started spluttering and juddering, then cut out again, any ideas?

Title: Re: Mk4 agu not starting
Post by: navmk4gti on 27 June 2013, 00:12

Have you scanned it? May be your ingnition amp which is on the air box

Title: Re: Mk4 agu not starting
Post by: luke on 27 June 2013, 00:15

Quote from: navmk4gti on 27 June 2013, 00:12

Have you scanned it? May be your ingnition amp which is on the air box

Haven't yet, was thinking of buying one this weekend too, I first thought it could be maf related as it ran rough before and the maf was loose, it has an aftermarket cone filter so checked all surrounding plugs

Title: Re: Mk4 agu not starting
Post by: navmk4gti on 27 June 2013, 00:29

Unplug the maf then see how it is ...not heard of maf stopping it starting tho.. may be the reason it runs ruff

Title: Re: Mk4 agu not starting
Post by: luke on 27 June 2013, 00:31

Going to take the old battery tomorrow and fit it and see if that will make it start to nurse it home

Title: Re: Mk4 agu not starting
Post by: cullygti on 27 June 2013, 00:33

Maybe a failing crank sensor like mine buddy  :wink:

Title: Re: Mk4 agu not starting
Post by: luke on 27 June 2013, 00:34

Looks like my bonus isn't being spent on my holiday to lanzarote and more spending on this little fecker, not treating it to coilovers now  :grin:

Title: Re: Mk4 agu not starting
Post by: luke on 27 June 2013, 07:28

Been back to the car this morning, didn't start, took the fuel return and fuel pipe off and tried to start which it did for half a second then cut out, then put the pipes back on and started up and nursed if home

Title: Re: Mk4 agu not starting
Post by: luke on 29 June 2013, 12:57

Can't hear the fuel pump priming, will be going to the local vw breakers later to pick up a cupra r fuel pump and going to see if they have any crank sensors in stock, fit them both and see if problem persists

Title: Re: Mk4 agu not starting
Post by: jamie16v on 29 June 2013, 14:25

fuel pump relay perhaps?

Title: Re: Mk4 agu not starting
Post by: luke on 29 June 2013, 14:31

Quote from: jamie16v on 29 June 2013, 14:25

fuel pump relay perhaps?

Sorry thought I put that down, will be replacing that also, if the relay fixes it then I'll keep the parts for spares

Title: Re: Mk4 agu not starting
Post by: luke on 03 July 2013, 19:26

Bits arrived today, sent the wrong crank sensor after giving engine code  :whistle:, also ran it upto temperature and ran fine, been to put petrol in and the weekly shop and runs fine, possible that could be crap in the fuel tank as I was on the petrol light when it happened