Question about 1989 Ford F 150

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1989 f-150 4 speed...big six engine..when i turn the key off ,,something is humming not very loud..will run the battery down over nite?????

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Hello p dill808
The old fords used to have a problem with the solenoid sticking, The solenoid is on the right fender well, near the battery. While it's humming, open the hood and feel the solenoid for any vibration, or if it's noisy. If so give it a couple of taps on the metal bracket part of the solenoid and that should free it up. Just replace it next time you're out. But if that is not the problem, remove and replace the
fuses one at a time until the noise stops. When it does, the fuse you just pulled powers the circuit
causing the humming, and it will be alot easier to find when you know where to look.
Hope this is helpful.

Posted on Mar 12, 2011


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