Hombre XS Space Cab 2WD V6-4.3L (1998)
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If a complaint condition is only present with the ignition key in the RUN position and the engine running, perform the following checks:
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CHECK the integrity of the ignition system (proper spark plug wire routing, no misfiring, etc.).
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CHECK the integrity of the engine compartment grounds
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CHECK for malfunctioning relays, solenoids, or other components which may be inducing noise or poor reception.
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CHECK the ground integrity of the complaint causing component.
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For noise and/or poor reception, perform the Antenna System Test and make the necessary repairs.
GENERATOR WHINE CONCERNS
Inspect:
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CHECK the ground terminal on the battery.
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CHECK for coated mounting bolts on the generator bracket.
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CHECK for a faulty mounting of the generator to the engine.
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Make sure all ground straps between the engine and the frame are clean and tight.
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Try the following fixes:
1. If noise is still present, check the charging system.
2. If the charging system is functioning normally, check for technical service bulletins on generator whine.
3. Install a filter in the battery feed to the radio.
4. Try installing the filter with the following variations if noise is not eliminated.
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INSTALL the filter with the single wire side toward the radio and the ground wire attached to a good ground.
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REMOVE the ground to the filter.
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REVERSE the filter so the two wire side is toward the radio with the ground wire attached to a good ground.
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REMOVE the ground from the filter.
5. If noise is still present, install another filter in the ignition feed to the radio. Install using the same variations as the first filter. If the installation
of this filter causes turn ON or turn OFF delays or other noticeable performance concerns, REMOVE it and INSTALL a 0.47 mF capacitor to
ground in its place.
6. REMOVE any unneeded filters after REPAIR, before reassembling the vehicle.
