Vehicle fault diagnosis VAZ-21051

Possible engine malfunctions, their causes and methods of elimination
Cause Method of elimination The engine does not start No fuel in carburetor: - fuel lines are clogged – flush and blow out the fuel tank and fuel lines - the fuel pump is faulty –...

Possible clutch malfunctions, their causes and methods of elimination
Cause Method of elimination Incomplete disengagement of the clutch (clutch "leads") Increased clearances in the clutch release drive Adjust the clutch release drive Warping of the...

Possible gearbox malfunctions, their causes and methods of elimination
Cause Method of elimination Noise in the gearbox Bearing noise Replace defective bearings Wear of gear teeth and synchronizers Replace worn parts Low gearbox oil level Add oil. If...

Possible malfunctions of the cardan transmission, their causes and methods of elimination
Cause Method of elimination Knocking in the driveshaft when starting off, during sharp acceleration or gear shifting Loosening of bolts and nuts securing the flexible coupling and...

Possible malfunctions of the rear axle, their causes and methods of elimination
Cause Method of elimination Increased noise from the rear wheels The wheel mount has become loose Tighten the wheel mounting bolts Worn or damaged axle shaft ball bearing Inspect...

Possible suspension faults, their causes and methods of elimination
Cause Method of elimination Noise and knocking in the suspension when the car is moving The shock absorbers are faulty Replace or repair shock absorbers The bolts securing the...

Possible steering malfunctions, their causes and methods of elimination
Cause Method of elimination Increased steering wheel free play Loosening the steering gear housing mounting bolts Tighten the nuts Loosening the tie rod ball joint nuts Tighten...

Possible malfunctions of the brake system, their causes and methods of elimination
Cause Method of elimination Insufficient braking efficiency Brake fluid leaking from front or rear brake wheel cylinders Replace defective wheel cylinder parts, wash and dry the...

Possible body malfunctions, their causes and methods of elimination
Cause Method of elimination The door opens with great effort The door lock retainer cracker axle is bent Straighten or replace the axle The door position adjustment is broken...

Possible malfunctions of electrical equipment, their causes and methods of elimination
Cause Method of elimination Battery discharge during vehicle operation Alternator drive belt slippage Adjust the belt tension Excessive contamination of the battery surface Clean...

Possible generator malfunctions, their causes and methods of elimination
Cause Method of elimination The voltmeter needle is in the red zone at the beginning of the scale Alternator drive belt slippage Adjust the belt tension Open circuit in the...

Possible starter malfunctions, their causes and methods of elimination
Cause Method of elimination When the starter is turned on, the anchor does not rotate, the traction relay does not operate The battery is faulty or completely discharged Charge...

Possible ignition faults, their causes and methods of elimination
Cause Method of elimination The engine does not start Current does not flow through the breaker contacts: – the breaker contacts are dirty, oxidized or burnt; increased gap...

Possible lighting faults, their causes and methods of elimination
Cause Method of elimination Some headlights and taillights do not light The fuses have blown Check, replace fuses The lamp filaments burned out Replace the bulbs Damage to wires,...

Possible malfunctions of the windshield wiper
Cause Method of elimination The wiper motor does not work, the bimetallic fuse does not operate and fuse 2 in the mounting block does not blow The power supply wires of the gear...

Possible malfunctions of the heater fan motor
Cause Method of elimination The electric motor does not work The wires are damaged or the wire connections are oxidized Check and repair connections. Replace damaged wires Fuse 1...

Possible malfunctions of control devices, their causes and methods of elimination
Cause Method of elimination The instrument fuse keeps blowing The instrument protection diode is broken Replace the damaged diode The coolant temperature gauge needle is...

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More articles from other manuals on VAZ cars:
➠ General information: Troubleshooting VAZ-21214 (1994-2006)
➠ General information: Vehicle malfunctions VAZ-2115 (1997-2012)
➠ General information: Troubleshooting VAZ-21099 (1990-2004)
➠ General information: Troubleshooting VAZ-21061 (1976-2006)

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