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Model specific boards => Golf mk2 => Topic started by: Dannyavw on 16 September 2011, 20:22

Title: Fuel pump constantly running
Post by: Dannyavw on 16 September 2011, 20:22

Hi I've fitted relay 30 in position 3 of fusebox On my mk2 vr6 conversion and my fuel pump is running all the time and I can't seem to get my indicator tell tales on mk3 dash pod to work, any suggestions cheers

Title: Re: Fuel pump constantly running
Post by: Diamond Hell on 16 September 2011, 23:52

Is the ECU good?

Fuel pumps running all the time when off is an indicator of blown ECU due to disconnected earth in some circumstances.

Title: Re: Fuel pump constantly running
Post by: Dannyavw on 17 September 2011, 07:53

Sorry  I'm not sure if I made myself clear enough the fuel pump runs all the time with relay 30 fitted with ignition on but constantly runs and if you turn ignition off it switches off. It primes but continues to run cheers

Title: Re: Fuel pump constantly running
Post by: SoundillusioN on 17 September 2011, 09:48

Quote from: Dannyavw on 17 September 2011, 07:53

Sorry  I'm not sure if I made myself clear enough the fuel pump runs all the time with relay 30 fitted with ignition on but constantly runs and if you turn ignition off it switches off. It primes but continues to run cheers

Is it definitely the correct relay?  If it is, tried a replacement?

Title: Re: Fuel pump constantly running
Post by: Dannyavw on 17 September 2011, 13:04

Swapped it from my mk3 gti and it does the same

Title: Re: Fuel pump constantly running
Post by: Wayne on 17 September 2011, 22:14

Could be an ecu fault

Title: Re: Fuel pump constantly running
Post by: Diamond Hell on 18 September 2011, 18:54

Quote from: Wayne on 17 September 2011, 22:14

Could be an ecu fault

As already posted - check the ECU in a known good car installation.

Title: Re: Fuel pump constantly running
Post by: lemski on 19 September 2011, 14:26

I would put money on the ecu. An earth isnt tight somewhere.

Title: Re: Fuel pump constantly running
Post by: mk2bal on 19 September 2011, 21:32

Check all earths continuity with a basic ohm meter

Title: Re: Fuel pump constantly running
Post by: madmanluke on 20 September 2011, 10:12

Im going with the wrong relay or the relay for the old digifant ecu is still in the fusebox.
As far as I am aware OBD ecu's from VR's dont suffer the same ground fault as the old digifant ecu's do.