fuel relay

hi does anyone know how to test the fuel relay on a gti mk1  whilst out of the car   thanks

you cant really as it needs a rev counter feed to trigger. if you bridge the 2 large pins on the relay socket together and the fuel pump runs you know the wiring to the fuel pump plus the pump itself is ok

 thanks mate

rubjonny said

you cant really as it needs a rev counter feed to trigger. if you bridge the 2 large pins on the relay socket together and the fuel pump runs you know the wiring to the fuel pump plus the pump itself is ok

how  do you bridge the two large pins

thick bit of wire with a spade connector on each end

rubjonny said

thick bit of wire with a spade connector on each end

and then push into the slots on fuse box.
sorry if a bit thick

yes, into the slots where the 2 chunky relay pins fit

rubjonny said

yes, into the slots where the 2 chunky relay pins fit

good news i bridged it and could hear the pump come on.
then took three relays to have them checked at a auto electrics centre they said they seem fine.
but when they are in the car the pump does not come on any help would great.

do they have any numbers on the front or vw part numbers on the side?

rubjonny said

do they have any numbers on the front or vw part numbers on the side?

yes number 62 and 63

62 at least is a k-jet relay at least, these require a rev counter signal to work so does your rev counter work ok?  are the connections on the coil the right way round, the red/black & green wires run to terminal 1 or -ve side of coil, the black wires run to terminal 15 or +ve side of coil

I am assuming you're running this car on the original k-jet managment right, its not a 16v or something random?

its 8v.
the rev counter was ok before it shut down just speedo was out.
(are the connections on the coil the right way round, the red/black & green wires run to terminal 1 or -ve side of coil, the black wires run to terminal 15 or +ve side of coil ) sorry which coils in side the relay :?

no sorry the ignition coil in the engine bay!

rubjonny said

no sorry the ignition coil in the engine bay!

breakdown guy sprayed start up and the car fired up so i think ignition is ok would that be right

ignition yes, but the relay requires a rev counter signal to trigger. if say the red/black wire had fallen off the coil the ignition system would still be fine and car would run on easy start, but the rev counter signal to fusebox would be gone which would stop the relay from triggering

rubjonny said

ignition yes, but the relay requires a rev counter signal to trigger. if say the red/black wire had fallen off the coil the ignition system would still be fine and car would run on easy start, but the rev counter signal to fusebox would be gone which would stop the relay from triggering

ooooooooooo  sorry to be a pain were abouts am i looking for coil in engine bay

at the back of the engine bay,rhs as you look at it from front of car or just follow the centre lead from the distributer and youll find the coil.

thank you for that. As anyone got a picture what the connection to the ignition coil should look like mine is loose ish but does not come off and seems fine.
The pump comes on if bridged put still no start checked all fuses they are fine should i check the back of fuse box  
got one of those multimeters how do i check the liftpump is receving a feed.
Thank you to everyone one who as help so far.
this forum is the best.  

if you look at the coil, on 1 side should be 2 black wires, and on the other a red/black and a green, or 2 red/blacks.  black side is marked 15 or +, red/black side is marked 1 or -.

Also, in general the +ve side of the coil has 3 spade pins on, and the -ve has 2. not always, but usually!

on mine there is 3 spades but the connecter plugs into 2