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Radio noise.

posted by  jed. on  Fri Aug 6 12:11 CST 2004
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I have a 1991 740,wagon and i put aradio in it ,problem is that the radio makes alot of static .Please help anyone?








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Radio noise.

posted by  someone claiming to be Manolo on  Fri Aug 6 12:47 CST 2004 [RELATED]

Another thought - alternator noise can come through the 12-volt power. Does it sound OK with the car not running? You can get a power filter to put in your power wire from anywhere that sells radios.








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Radio noise.

posted by  someone claiming to be Manolo on  Fri Aug 6 12:44 CST 2004 [RELATED]

First, is it snapping or humming at frequency that changes with engine speed?
If so, it is likely ignition or alternator. Make sure your hood is grounded well (should be on a Volvo) then look for bad plug wires or a failing alternator.

If it is random static, try hooking a different antenna (any piece of wire) directly to the back of the radio. That will help narrow the problem down to radio, antenna, or antenna lead. Try the same radio in a different car.







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