[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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