Hyundai Sonata LF: Timing System / Idler Components and Components Location

Drive Belt Repair procedures

Removal 1. Disconnect the battery negative terminal. 2. Loosen the alternator tension adjusting bolt (A) to loosen tension. 3. Remove the drive belt (A)...

Idler Repair procedures

Removal and Installation 1. Remove the drive belt. (Refer to Timing System - "Dreve Belt") 2. Remove the idler (A). Tightening torque : 42...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Repair procedures

Compession Pressure Inspection     If the there is lack of power, excessive oil consumption or poor fuel economy, measure the compression pressure. 1. Make sure the oil in the crankcase is of the correct viscosity and at the correct level and that the battery is correctly charged...

Hyundai Sonata LF 2014-2019 Service Manual: Heated Oxygen Sensor (HO2S) Repair procedures

Inspection 1. Turn the ignition switch OFF. 2. Disconnect the HO2S connector. 3. Measure resistance between the HO2S terminals 2 and 5 [B1/S1]. 4. Measure resistance between the HO2S terminals 3 and 4 [B1/S2]. 5. Check that the resistance is within the specification...