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Re: [T3] Fuel pump/warning light relay


On Sun, Dec 26, 1999 22:20, Jim Adney <mailto:jadney@vwtype3.org> wrote:
>Turn the key ON (fuel pump will run.)
>Pull plastic conn off fuel pump relay. 
>Does pump stop?
>Does the relay click when you remove and insert the plastic 
>connector?

Pump stops when you pull the plastic connector off and starts when it's
back on.  And yes, I can hear it clunk.

I have also checked the blue/yellow input with a voltmeter and it seems
that the under dash relay is working fine.

I cleaned up the wires, the blue/yellow one might actually be blue and
white but it's hard to say.


>The red wire that feed power to the relay should come from the fuse 
>box and should NOT go on and off with the hazard light. Verify this. 
>This wire should also come from a point on the fuse fox that is 
>ALWAYS hot, not switched by the ignition switch. Verify this.

Well... it's not doing that now. The flashers aren't causing the pump to
run anymore. I had it out for a spin yesterday and heard a pop noise from
under the back seat (left hand side) so perhaps something burned out. I
didn't smell anything but today the flashers aren't doing anything to the
pump. Yesterday the flasher unit caused 12 volts to be supplied to the fuel
pump relay, today they don't.

Flasher have a wire which is always hot. I pulled the fuse on them. They
stopped but the pump still runs all the time.

Is the relay under the back seat shared by the flashers and fuel pump?
There are about half a dozen wires going into it underneath and a brown
earth wire.

I had a look inside the brain, though the end which opens up. All the wires
are white. There wasn't any damage that I could spot using a MagLite and it
didn't smell like anything had burnt out.

Don't ya just hate aut electrics.

aedan

1971 VW fastback
1989 Volvo 240GL

Our enemies shall talk themselves to death, and we will bury them with
their own confusion.

We shall prevail.




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