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fuel pump problem again and again

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Old 08-19-2017, 02:20 PM   #21
Gene D
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Default Back to checking load.

So, To check load of pump, Must remove oil pressure line.
THen Amp meter the 2 relay points?
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Old 08-19-2017, 10:31 PM   #22
Purple92
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No...

If you are checking at the oil pressure switch, simply remove the electrical connector at the switch, and check current draw beteween pins "C" & "D" .

Or you could pull the fuel pump fuse and check current draw across the fuse terminals when the fuel pump is running.
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Old 08-19-2017, 10:54 PM   #23
Gene D
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Default Would half of the load go thru relay.

Quote:
Originally Posted by Purple92 View Post
No...

If you are checking at the oil pressure switch, simply remove the electrical connector at the switch, and check current draw beteween pins "C" & "D" .

Or you could pull the fuel pump fuse and check current draw across the fuse terminals when the fuel pump is running.
That seems like only half the load would be tested.
Does the fuse cover the relay supply and the oil switch supply?
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Old 08-24-2017, 08:22 PM   #24
Purple92
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Short answer - Yes - all fuel pump current flows thru the fuse.
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