Volvo, 780 Common Issues
1. Oil leaks from valve cover gasket
Occurrence: 15%Cost to repair: $300Symptoms:
Engine oil leak from under the hood, engine noise
2. Rear main seal leak
Occurrence: 12%Cost to repair: $800Symptoms:
Oil on the ground or in the rear of the car, excessive oil consumption
3. Transmission solenoid pack failure
Occurrence: 20%Cost to repair: $1000Symptoms:
Unusual noise from transmission, slipping or hesitation between gears
4. Ignition coil failure
Occurrence: 18%Cost to repair: $250Symptoms:
Engine misfires, rough engine performance
5. Catalytic converter failure
Occurrence: 22%Cost to repair: $1200Symptoms:
P0118 and P0128 fault codes, poor fuel economy, unusual exhaust noise
6. Rear axle bearing failure
Occurrence: 16%Cost to repair: $900Symptoms:
Rear differential whine or vibration, rough ride
7. Coolant leak from water pump
Occurrence: 14%Cost to repair: $450Symptoms:
Overheating engine, low coolant level, steam or vapor coming from under the hood
8. Faulty oxygen sensor(s)
Occurrence: 12%Cost to repair: $200Symptoms:
P0130 and P0141 fault codes, poor fuel economy, unusual engine performance
9. Rear brake shoe failure
Occurrence: 11%Cost to repair: $600Symptoms:
Squealing or grinding noise from the rear brakes, excessive wear on brake pads
10. PCV system clog or blockage
Occurrence: 13%Cost to repair: $350Symptoms:
Engine oil leak from under the hood, unusual engine performance
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