1990 Harley-Davidson Electra Glide Police FLHTP — Common Issues & Known Problems
Known Issues & Owner Reports
These are the most commonly reported issues and concerns from owners, mechanics, and community forums for the 1990 Harley-Davidson Electra Glide Police FLHTP.
Inner Cam Bearing Failure
HighThe stock INA bearing with a plastic cage can disintegrate, sending metal debris through the engine.
High-Speed Wobble
MediumInstability caused by the 'Cleveblock' rubber swingarm bushings and the rubber engine mounting system.
Stator Plug Oil Leak
LowOil can weep from the rubber plug where the stator wires exit the primary case.
Used Buying Inspection Checklist
What to look for when buying a used 1990 Harley-Davidson Electra Glide Police FLHTP.
Base Gasket Seepage
Check the area where the cylinders meet the engine cases for oil residue; a heavy leak requires a top-end teardown.
Air Seat Integrity
Pump up the seat and listen for hissing or check if it holds pressure overnight; bladders are expensive to replace.
Drive Belt Condition
Inspect for cracks or missing teeth. Replacing the belt on this era FLH requires removing the entire primary drive.
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