[T3] Fuel pump isn't working.

[Jeff Palmer]

Sorry if I wasn’t clear!  I think I said ’toggling’ not ‘wiggling’ and by that I meant repeatedly turning it on and off.  Maybe we are saying the same thing :)

Thanks
Jeff

> On Nov 1, 2021, at 5:40 PM, David Hall <dave at hallvw.clara.co.uk> wrote:
> 
> Could it also be an intermittent contact in the ignition/starter switch, as he says wiggling it sometimes helps?  
> Dave,
> UK VW Type 3&4 Club. 
> 
>> On 1 Nov 2021, at 17:22, Jim Adney <jadney at vwtype3.org> wrote:
>> 
>> On 1 Nov 2021 at 8:21, Jeff Palmer wrote:
>> 
>>> Hi everyone - 69 automatic notchback parked for the winter ... it hasn´t run in about 15 years but we got it going this summer.
>>> 
>>> The fuel pump seems to run intermittently and if I recall I had the same issue 15 years ago but my memory is fading.  The problem seems to be that sometimes the pump won´t run with the key in the `on´ position but will run when it is returned to the `off´ position.  A little bit of toggling will get it to operate properly - sometimes. It seems to be accompanied by a clicking under the dash - a relay of some sort?  Are these items related and if so is there an obvious solution?  New relay? Cleanin grounds? New fuel pump?  llof the above??
>> 
>> This is a rather unusual set of symptoms, but they might be fixed in a couple 
>> ways. It sounds like your pump might be okay, but may need some 
>> "exercise" to get it back in shape. That's something that we can't fix unless 
>> we can get it to run more often. I have two recommendations for that.
>> 
>> First, there is a grounding problem in the '68-9 cars that affects the fuel 
>> pump. I started making kits to fix this a few years ago. The kits are only $10 
>> and include some wiring and complete instructions to fix the grounding 
>> issue. Every '68-9 Type 3 would benefit from this.
>> 
>> Second, I have two kinds of fuel pump priming switches, which can be used 
>> to run the pumps independent of the FI controls. The cheap kit is $10 for a 
>> simple pushbutton; the better kit is $30 for a 3 position (Off, Normal, (Prime)) 
>> HD toggle switch. Both include mounting bracket, necessary wiring, and 
>> complete instructions.
>> 
>> Yes, there is a relay under the dash that controls the fuel pump. You might 
>> start by listening when you turn the key ON. You should hear a relay click 
>> when the key comes ON and a second click ~1 second later. If you don't 
>> hear both clicks, the first thing to check is the relay under the back seat 
>> behind the driver seat. That relay should have a ground wire hooked under 
>> the screw that mounts the relay. Make SURE that screw is tight, so that wire 
>> has a good ground.
>> 
>> Check those things and get back to us.
>> 
>> -- 
>> *******************************
>> Jim Adney, jadney at vwtype3.org
>> Madison, Wisconsin, USA
>> *******************************
>> 
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