Vehicle fault diagnosis VAZ-21099

The engine will not start
Problems with starting a car engine can be divided into two main groups depending on the degree of engine heating. The engine is cold At least 6 hours have passed since the engine...

Injection system faults
On VAZ-21099-21 cars in a variant with engines with a working volume of 1.5 liters, a distributed fuel injection system is used. It is called distributed injection because the...

Idle speed is gone
The VAZ-21099 family of vehicles uses Solex type carburetors from the Dimitrovgrad Automobile Unit Plant. Car model Engine displacement, cm³ Carburetor model 2108 1295 DAAZ-2108...

Engine misfires
What to do if your car's engine, which until recently worked "like clockwork" in all modes, suddenly began to misfire, jerk at idle, and stopped developing sufficient power?...

The car moves in jerks
Necessary clarification: jerk — a short-term spontaneous change in engine speed regardless of the position of the gas pedal. In everyday use, as a rule, there are series of jerks;...

The car accelerates poorly
There are many reasons for the deterioration of dynamics, the main ones can be defined as follows: 1. Engine malfunction - decreased compression in one or more cylinders, change...

The engine stalled while driving
Sooner or later, every driver can find themselves in a situation where the car, which just a few moments ago obeyed all commands, suddenly stops responding to pressing the gas...

Oil pressure dropped
There is an engine oil pressure indicator light on your car's dashboard. For the engine to operate reliably, it is necessary that the engine's lubrication system is constantly...

Engine overheating
When the engine is running, a properly functioning cooling system maintains the optimal temperature. Malfunctions in the cooling system can lead to engine overheating. If you miss...

The battery is not recharging
There are two sources of current in a car – a battery and a generator. The battery is used to start the engine and to supply the starter and other consumers with 12 V electric...

Electrical equipment faults
Most often, electrical equipment malfunctions occur during everyday use of a car. For objective reasons, electrical equipment repairs should be carried out qualified car service...

Extraneous knocking sounds appeared
If you feel that the engine is making sounds that weren't there before, immediately check to see if everything is OK with the engine. Most often, engine knocks are associated with...

Vibration and shock on the steering wheel
Knocking sounds from below may be caused not only by faults in the suspension, but also in the vehicle's steering. The condition of the steering significantly affects both the...

Brake problems
Your car's brake system is equipped with a vacuum booster and is quite effective. A decrease in braking efficiency, skidding of the car when braking should be a signal to urgently...

Tire puncture and replacement
A flat tire is a nuisance that every driver faces sooner or later. Air from a flat tire can escape quickly or slowly, depending on the size of the object that punctured the tire...

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More articles from other manuals on VAZ cars:
➠ General information: Troubleshooting VAZ-21214 (1994-2006)
➠ General information: Troubleshooting VAZ-21051 (1979-2010)
➠ General information: Vehicle malfunctions VAZ-2115 (1997-2012)
➠ General information: Troubleshooting VAZ-21061 (1976-2006)

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