[urq] Fuel pump issue fixed .

Patrick Carlier p.carlier at pandora.be
Mon Sep 28 02:00:58 PDT 2009


It's fixed . 

Some previous owner cut off the wire from the fusebox to the to the fuel pump relay , and 
connected it to the back up light circuit . Who needs backuplights anyway .... 
Needles to say , that circuit can not nearly deliver enough current .
That's also the reason I couldn't get the pump to run without  the ign switched on . 

I pulled about a meter of wire , and 4 factory connections behind the fusebox . 
All connections had that brownisch colour on the edges indicating overheating . 
So I replaced it all , from the pump to the fusebox to the relay . 
Eliminating as much connections as possible . 

So now I have 11,9 V at the terminals with the pump running .
Current draw is 8,60 A , I think that's acceptable . 
Still gonna do the filters though . 

Finally I did the delivery test . 
It's supposed to pump 1800cc/min . 
I got 1900cc ,so it's all well within spec . 

I think this is  gonna cure most of my problems . 
Especially cause the warm up regulator is also powered off the fuel pump circuit . 
Guess that didn't get much current either , explaining the pig rich condition .
 
But as I'm the stubborn kind of guy , I'm still gonna do the rest of the test scheme and start 
by measuring pressures  at the cis head . 

Pat 


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