Radio whine at low frequencies on '89 Cherokee
08-01-2012, 09:16 PM
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Year: 1989
Model: Cherokee
Engine: 4.0w/703 injectors
Radio whine at low frequencies on '89 Cherokee
Ok my radio just started doing it this morning. It worked fine until I tightened up the braided ground strap on the back of the head. I noticed the nut holding the ground strap was really loose. As soon as I tightened the strap the whine started. I undid the strap but the radio is still doing it. It only does it at low frequencies (104.1 and below). I have had other vehicles with alternator whine but it was in all frequencies. The unit is the stock 1989 tape deck/AM/FM radio. I have no aftermarket speakers or CB or anything that could casue interference. It kinda has me stumped. Any ideas??
08-26-2012, 08:40 PM
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Year: 1989
Model: Cherokee
Engine: 4.0w/703 injectors
Figured out the problem the other day. The black ground wire that plug straight into the back of the stock radio (not the antenna wire, the smaller wire with a female spade plug) was undone. Plugged it back in a its back to normal.
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