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#11 | |
Registered User
Join Date: Mar 2012
Location: IOWA
Posts: 5
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Re: 1973-1991 Dual fuel tank systems theory of operation
Quote:
I tried 4 used relays and 1 brand new relay, all had same result... 12.4V back probing Terminal A and 8.9-9.1V on Terminal E, grounded direct to battery. I'm not great at finding info in these forums, I feel like I've searched every possible combination of word search... would like to know any suggestions for a next step. P.S. Some Clarification: 91 V3500 454: While testing the A terminal (key on) 12.3+/- volts. Testing the E terminal I get 12.3V+/- at initial key on and while cranking, but falls back to 9Volts +/- when not cranking/not triggering fuel pump.... Interestingly enough I did the same test on my 91 V2500 Suburban 350 it gives similar readings except when testing E terminal key on when not cranking/not triggering fuel pump it then gives a 9 MILI VOLT reading. Any Idea why the V3500 gives 9Volt reading while the same test on the V2500 gives different reading of 9 Mili Volt??? Also I checked firewall and Engine Ground both seem perfect. Last edited by squarebodyaddict; 11-06-2022 at 06:48 PM. Reason: More/New Information |
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