[T3] fuel pump relay ground

[Dave Pallo <rdavid@rochester.rr.com>]

Hey All..........well, my attempts at getting my T3 running today didn't 
work........first of all, I can't get the fuel pump relay to operate the 
fuel pump.....turns out I have no ground circuit to the relay.....
according to Bentley....terminal #85 on the relay gets a ground signal from 
connector #19 in the brain.......however, I don't get a ground signal 
coming from #19 for some reason.....I have tried 3 different brains, but no 
ground signal coming from terminal #19. According to Bentley, I have a 
ground source provided to the brain via terminal #11 which is connected to 
the grounding terminal on the case....this I have checked out and I do have 
a good ground supply thru #11 to the brain....no problem there....
I have manually provided a ground source to relay terminal #85 (without 
grounding the wire back to the brain) and the fuel pump runs continuously. 
Also, I checked the wire from #19 to up front at #85 and I do have good 
continuity.
Evidently, the brain must control when the fuel pump relay gets a ground, 
thereby allowing the fuel pump to run. There must be something that signals 
the brain to provide this ground, but I don't know what...
What am I missing???


Dave Pallo
Hers: '72 Square (in process)
His: '96 Impala SS....Sunny Sunday's only

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