Infiniti G20 P10 Workshop Manual and EWD

The Infiniti G20 P10 1990–1996 Factory Workshop Manual is an in-depth technical guide designed for maintaining and repairing the first-generation Infiniti G20 (P10). Covering all aspects of vehicle service, the manual includes detailed instructions on engine mechanics, transmission, suspension, electrical systems, and troubleshooting. Complete with wiring diagrams and diagnostic procedures, this manual is an essential resource for both professional technicians and car enthusiasts. It ensures precise repairs and maintenance to keep the Infiniti G20 performing at its best.

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1. Transmission Problems 

Description: Many owners of the G20 with an automatic transmission experienced problems with the transmission, especially at high mileage.

Causes: This is mainly due to wear of the friction discs and improper maintenance. The automatic transmission required regular oil changes, and ignoring them could lead to poor performance or failure.

2. Suspension Wear

Description: Suspension components such as struts, ball joints and bushings often wore out faster than expected, especially on rough roads.

Causes: Poor road conditions and time led to accelerated wear, causing knocking and poor handling.

3. Exhaust System Corrosion

Description: Older G20 models had problems with rust and corrosion of the exhaust system, especially in areas with harsh winters or high humidity.

Causes: The exhaust system was vulnerable to corrosion due to road salt and moisture, requiring frequent replacement of mufflers and pipes.

4. Electrical Problems

Description: Some owners reported problems with the electrical system, such as failed sensors, problems with the alternator or starter, and failures of the air conditioning system.

Causes: Electrical wiring ages over time, which can cause short circuits and component failures.

5. Engine Overheating

Description: In some cases, owners experienced engine overheating, especially in hot weather or on long trips.

Causes: The main causes were problems with the radiator or water pump, as well as wear of the thermostat, which reduced the efficiency of the cooling system.

6. Clutch Wear (Manual)

Description: Owners of cars with a manual transmission often noted problems with clutch wear, especially if the car was used in an aggressive manner.

Causes: The clutch would wear out faster during sporty driving, especially if the driver frequently used sharp acceleration and braking.

7. Noise and Vibration

Description: Over time, G20 vehicles often developed problems with noise and vibration while driving.

Causes: Worn suspension components, as well as problems with mufflers and exhaust systems, could cause vibrations and noise.

8. Oil Consumption Problems

Description: Some owners reported increased oil consumption on vehicles with high mileage.

Causes: Worn piston rings or valve seals could lead to oil leaks, especially on older engines.

9. Air Conditioning Problems

Description: Air conditioning system problems were quite common, especially on older vehicles.

Causes: Refrigerant leaks, faulty compressors, or temperature sensors could lead to problems with the air conditioning system.