relay control modules start buzzing?

1994 FORD TAURUS
3,332,251 MILES • 3.8L • V6 • 2WD • AUTOMATIC
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KEVINSJ1313
The relay control module start buzzing and would not start the engine. it wouldn't start the fuel pump so I jumped it to control module to see if I can get fuel pump start it works motor starter cranked up and running I ordered a new one put it on fuel pump won't come on won't start the car just turns over I checked the fuel shut off valve safety switch it's working like it's supposed to I mean it's reset.
Sep 16, 2025 at 12:00 PM
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STRAILER
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So, it sounds like you have a bad ground at the constant control module. Here is a guide to help check the ground, make sure the wiring harness is unplugged before testing, test the black/lt green wire.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

Connect the test light lead to power to test the ground ;) let me know what happens.

Sep 16, 2025 at 12:45 PM
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KEVINSJ1313
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All right I tested the black and light green and my test light lights up green so I'm getting ground
Sep 25, 2025 at 10:54 AM
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STRAILER
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Sorry, I for get to ask you to disconnect the module before testing, can you do that and get back to me?
Sep 26, 2025 at 9:06 AM
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KEVINSJ1313
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Yes I did disconnect it and I had good ground to the plug
Sep 27, 2025 at 6:27 AM
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STRAILER
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Sorry, I now see there are three black/lt green wire on the constant control relay. It will be the wire at terminal 15 next to the grn/wht wire, again make sure the module is disconnected. Let me know. Also, try disconnecting the AC compressor as when, if the clutch is shorted out it can cause this problem.
Sep 27, 2025 at 11:18 AM
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