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Re: [T3] Fuel Pump Relay?!?


On 2 Jul 2002, at 14:50, Jason Cornfeld wrote:

> Okay Guys, I thought I was AN FI Guru by now but I am stumped... OK. I was up in
> Idaho on Business.. I went and Washed my car... Finished. Started and ran fine.
> 2 clicks not sure if I heard them both.. went to turn out of the parking lot
> into the road.. car lost all power.. so I pulled to the side of the road,
> thought.. hmm maybe the wire came off the starter.. I need to tighten it anyway.
> so ok that came off.. I put it on and went to start the car.. no dice.. tried to
> see if I heard 2 clicks.. ok, I hear the one in the back seat.. and something
> clicks up front but not the relay and my fuel pump doesnt turn on. so I keep
> turning the key back and forth.. my Flasher relay clicks a titch when I turn the
> key, is this normal? Not sure.. but I have no click in the relay. tried
> replacing both relays.. with spares.. they are exactly the same right? well
> anyways. I used a computer power switch so that I could turn the pump on and off
> so that I could get myself back to Wyoming.. so. my question is.. what do i do.
> Did my CPU crap out when that wire fell off? What?  but I was lucky I had that
> power swith in my computer toolbag. =) (ingenious thinking there) it would also
> be a good secutity option.. just turn the pump off and car will not go.. 

It's really hard to get comments inserted appropriately in a run-on paragraph 
like this, so you'll just have to take it all at once.

I don't know what wire fell off the starter, but there is nothing there that 
should have made the car lose power once it was running. The relays are the 
same. I don't know what else would click up front, but I sometimes I put my 
fingers on it just to verify that what I'm hearing is that relay. The flasher relay 
sometimes clicks with voltage transients, this is not a FI problem. The 
separate fuel pump switch is a good solution as long as you don't have an 
accident. If you put it in series with the relay then you could have the theft 
protection as well as the safety feature.

> Jim, any advice? do I need to swap my brain??

I'm sure your brain is fine, and so is your ECU.   ;-)

Check the wiring between the 2 relays, and the brain. There is a connector 
just in front of the engine where the FP relay wire connects into the FI 
harness; it's a single splice - check it.

-
Jim Adney
jadney@vwtype3.org
Madison, WI 53711-3054
USA

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