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Model specific boards => Golf mk3 => Topic started by: sparkplug on 28 November 2012, 20:54

Title: diagnostic question on fuel pump ?
Post by: sparkplug on 28 November 2012, 20:54
my son has just got a Mk3 1.4 (yeh 1.4...i know but he needs cheap insurance)
the fuel pump is playing up & blowing the 20A fuse ,no short circuits to earth
 seems its drawing too much current, but can't decide if the pump is going home
... or maybe the fuel filter is blocked causing the excessive loading of the pump

anyone had similar symptoms ?
Title: Re: diagnostic question on fuel pump ?
Post by: hainesz on 28 November 2012, 20:58
replace pump its clearly had it... blocked filter would cause this...
Title: Re: diagnostic question on fuel pump ?
Post by: tweed on 28 November 2012, 21:38
What about the relay?
Title: Re: diagnostic question on fuel pump ?
Post by: sparkplug on 29 November 2012, 20:37
cheers for the reply  :smiley:

tweed... tried the relay , but problem is still the same

 hainesz...got the old pump out ,seems to be a pattern one as has no VW part number on it
 going to replace the pump , ordered one today , fingers crossed

Title: Re: diagnostic question on fuel pump ?
Post by: sparkplug on 01 December 2012, 21:08
the previous owner had a ,new cat. converter & lambda sensor fitted last week....
seems they(garage) broke the heat feed cable on the lambda sensor, this flapping about is what was blowing the fuel pump fuse,as they share the same fuse

took me a while to sus it out
so the lesson is just because its a new part ,don't mean it aint broke  :rolleyes:
Title: Re: diagnostic question on fuel pump ?
Post by: Stewy12 on 02 December 2012, 09:42
Quote from: totalnuttah on 01 December 2012, 21:08
the previous owner had a ,new cat. converter & lambda sensor fitted last week....
seems they(garage) broke the heat feed cable on the lambda sensor, this is what was blowing the fuel pump fuse,as they share the same fuse

took me a while to sus it out
so the lesson is just because its a new part ,don't mean it aint broke  :rolleyes:

+1 that will be them problem i had the same problem replaced fuel pump relay fuses and still kept blowing... unplug sensor from under bonnet replace fuse and see if it stops blowing if so replace sensor again...