fuel pump relay - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 4 Old 08-01-2017, 08:37 PM Thread Starter
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fuel pump relay

hello mustang world

so I have 1989 coupe I'm trying to figure out the relay itself I need to test it. i was just going to buy a new one there only like $15 . now my issue is the one that I bring to the auto parts store has 4 prongs and everyone they carry for a 89 5.0 mustang is a 5 prong. when I look them up on line there all 5 prongs . it appears to be a original ford (green ) relay . I have not gone to ford yet that's my next move.
I typed in -how to test a ford mustang 5.0 fuel relay - and it brought me to a site that explains how to test the relay connector (the female end) and the site appears to have 4 wires leading to the connector on the site... so if anyone has a 89 coupe could they check there stock(I think) fuel pump relay please I know it is a pain to get to ..thankyou very much

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post #2 of 4 Old 08-03-2017, 03:45 PM
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Relay consists of a load and set of contacts

Find the load, it has resistance once you id the load the other are contacts

That easy

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post #3 of 4 Old 08-03-2017, 03:51 PM
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Looking at the terminals inside, I would guess that 1&2 would be the coil inside and 3&4 would be the switch.


Just a guess, dont shoot me.
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post #4 of 4 Old 08-03-2017, 07:23 PM
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that is a good guess, but why guess , use a meter

89 GT gr-40, KB2200(10psi), tweecer R/T,LC-1, 22gal cell, w/tailpipes.
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