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Model specific boards => Golf mk1 => Topic started by: chalky white on 21 February 2012, 17:27

Title: GTI fuel pump and Relay
Post by: chalky white on 21 February 2012, 17:27
Hi all,

Just been sorting through some issues with the 1991 Rivage (and there are a lot).

Can anyone confirm the following.

With the key in position one in ign, fuel pump kicks in and it's loud you can hear whiring away.

It continues to run untill I turn IGN on and it starts up.

from what I gather it should prime on IGN one and then shut off, untill you turn IGN on.

The difference is to do with the fuel pump relay, the 4 pin gives continuous pump run, the 5 pin primes and then cuts out until IGN starts and then it kicks back in.

Anyone know which one should be in the 1991 GTI.

Thanks

chalky
Title: Re: GTI fuel pump and Relay
Post by: SoundillusioN on 22 February 2012, 00:10
Hi,

Ignition on position 1 shouldn't do anything, AUX only.

Position 2 = Warning lights on and short prime from pump.

Then obviously turn over is on 3.

Either way the pump shouldn't run constantly unless the engine is being cranked or running, if it does then it could potentially be dangerous.

Although mine is an 83 tin top and yours is a 91 rag top, they both share the same DX Engine and therefore you should have the 5 pin Pump Relay (numbered as 2)

I had the same problem once with an incorrect relay.

Not long ago on my current car I replaced everything, wiring, fuse box, relays etc. 

Just went out to remind myself whats in mine. I have this now. (often used in later vehicles for speed limiters amongst other things)

(http://www1.uk.conrad.com/m/5000_5999/5000/5040/5040/504057_BB_02_FB.EPS.jpg)

Around £35 if you search by the part number

If you don't mind a little wait on the postage I found THIS (http://www.ebay.co.uk/itm/Audi-80-100-200-90-VW-Golf-Jetta-FUEL-PUMP-RELAY-OEM-/170194325752?pt=Motors_Car_Truck_Parts_Accessories&hash=item27a05f50f8) for you for half the price  :wink:
Title: Re: GTI fuel pump and Relay
Post by: chalky white on 22 February 2012, 11:23
Marvelous,

Thanks for the link too.

Yes my thoughts too, What if I had crash and the fuel pump just kept going....!!!

Will get straight on it.

Cheers

Chalky

Title: Re: GTI fuel pump and Relay
Post by: SoundillusioN on 22 February 2012, 22:47
No problem... Let me know if that sorts it out.
Title: Re: GTI fuel pump and Relay
Post by: chalky white on 24 February 2012, 14:24
Will do and orderd from the USA.

Thanks again..

Chalky
Title: Re: GTI fuel pump and Relay
Post by: SoundillusioN on 24 February 2012, 14:28
Will do and orderd from the USA.

Thanks again..

Chalky

How much was that?
Title: Re: GTI fuel pump and Relay
Post by: chalky white on 24 February 2012, 15:53
£16.39 inc P&P....happy days  :grin:
Title: Re: GTI fuel pump and Relay
Post by: SoundillusioN on 24 February 2012, 16:04
£16.39 inc P&P....happy days  :grin:

 :cool: Pretty much half price.
Title: Re: GTI fuel pump and Relay
Post by: chalky white on 12 March 2012, 12:53
This came in from Turkey in a couple of days.
So no messing about waiting.
Anway, I have realised the issue, as these cars have 2 fuel pumps, the in tank lift pump is squeuling like mad and I now understand that it is not the main pump under the car body.

The fuse blowing and heat generated is because of the supply being drawn to the lift pump.
What can happen is the pump starts to fail or it's overworked due to clogged filter in the tank or the fuel filter in the engine bay.

I have now ordered a new pump so will have a look see what condition the tank is in and get my magnet out to fish out any metal bits. Then it's line cleaning time and new filter.

cheers
Title: Re: GTI fuel pump and Relay
Post by: SoundillusioN on 13 March 2012, 00:00
Well that sucks. Thanks for keeping us posted.

I'm surprised mines all OK after standing for years and it's a good job too, I really cant be bothered with an issue like this right now, got enough to do.
Title: Re: GTI fuel pump and Relay
Post by: chalky white on 13 March 2012, 19:02
Well here we have it.

Removed the in tank lift  pump and found the filter a bit mucky.

It wouldn't be enough though to cause an issue I thought.

(http://i380.photobucket.com/albums/oo248/chortlemk1/00c81774.jpg)

Because I was on a slope and I had removed one of the fuel lines it was pouring fuel out not good lol.

So a petrol can and some tubing  siphoned some fuel out into a can.

I got my water pump pliers to go into the slots on the housing and gave her a twist.

I got a new pump of Ebay 20 odd quid as just one screw on a connecting tube clip and a plug we were in business.

I had bought a new filter and did not change this at the time I bought the car as it was going under cover, that was last November.

So changed that also, Not happy at all, Why is it people don't take care of their cars?
When I got the car I did an engine flush and coolant change, oil and filter.
I went to do the Air filter and was amazed to find no filter in there at all, Dirty boy.....

Imagine  my horror when this little lot came out.....

(http://i380.photobucket.com/albums/oo248/chortlemk1/fec21e61.jpg)

It's now thick with a rusty sludge, poor maitenance by the previous owner.

Thing is the petrol that I syphoned out was lovely and clean.

deffo a tank drop and fuel line flush.

I have heard of a kit to re seal the tank inside with a coating?



Title: Re: GTI fuel pump and Relay
Post by: gibby on 15 March 2012, 13:11
If you know about this already I'll get my coat, but is your fuel filler neck rusty ? If so then you will need to check and replace that too. Also, I see that you have one now, but GSF used to do the fuel relays, had to buy one myself a few years ago when I had a cab.
Title: Re: GTI fuel pump and Relay
Post by: SoundillusioN on 15 March 2012, 13:21
If you know about this already I'll get my coat, but is your fuel filler neck rusty ? If so then you will need to check and replace that too. Also, I see that you have one now, but GSF used to do the fuel relays, had to buy one myself a few years ago when I had a cab.

Good point.....


GSF did and probably still do the relays but not cheaply IIRC.  VW heritage also do them but at nearly £40 delivered, fook that.  Can be found cheaper.
Title: Re: GTI fuel pump and Relay
Post by: gibby on 15 March 2012, 13:25
GSF fuel relays were about £15 a few years ago.
Title: Re: GTI fuel pump and Relay
Post by: SoundillusioN on 15 March 2012, 14:00
GSF fuel relays were about £15 a few years ago.

Just had a look, they're not too bad, around £25 now I think.
Title: Re: GTI fuel pump and Relay
Post by: chalky white on 17 March 2012, 18:57
The fuel filler neck looks okay, but will have a proper look Gibby, cheers for that. :grin:

Another issue with the necks is that the wheel arch liner doesn't cover the area fully under the body.
So muck and mud stick to the filler at the top and start to rust from the outside too.
Just put your arm up to the area and have a feel around.
I cleaned the muck off my old car and have yet to do it to this car, it's on my list of do's.
This car had some money spent on it 2 years ago by a previous owner who then sold the car to his cousin who really hasn't looked after it and I got it as a project, but no air filter and no Fuel filter change, that's serious neglect.
I fully service my car every year although I only do around 3,000 miles in it.

You can put a 53 (horn) relay in the fuel pump slot, but that's only a 4 pin, that was in there.

Although there was no horn relay in the horn slot, so no Horn amongst other things.

It's had issues and a lot of water ingress, because it had no rain tray fitted in the scuttle and the drain holes either end were bunged up, so a wet floor and fuse box issues.

I have cleaned the fuse box with contact cleaner and there doesn't appear to any corrosion to it, which I am suprised about.
It's a case of just going through any remaining gremlins.

I just want the warmer weather now to get the top section completely re done.

So it's new Interliner and top pad and then hood, luckily the Black headlier is mint.
I am trying to source a good quality Mohair or canvas top, similar to the Haartz Sonnerland Classic material used origionally.

Cheers Folks