Fuel injection system car Opel Vectra A

Technical data of fuel injection systems
Petrol engines of Opel Vectra/Calibra cars, depending on the model, can have either a carburetor or an electronic fuel injection system. Engines with a volume...

Motronic injection system
Engines with a capacity of 115 hp produced before August 1989 are equipped with the Motronic ML4.1 injection system, and the same engines produced from...

Safety precautions when working with injection systems
Do not start the engine if the battery cables are not securely connected. The engine should be started only from a 12 V battery or from an external power...

Multec injection system
The Multec system is a central fuel injection system. It is equipped with C16NZ and E16NZ engines. In this system, ignition and fuel injection are controlled...

Diagnostics of faults in fuel injection systems
When faults occur in the ignition and fuel injection systems, a control lamp lights up on the instrument panel. At the same time, the control computer switches...

Fuel injection system fault codes

Checking, removing and installing the coolant temperature sensor
This sensor measures the temperature of the coolant and transmits information about it to the computer. The sensor has a thermoelement that decreases its...

Checking, adjusting and replacing the throttle position sensor (Motronic system)
The throttle position sensor is located in its housing. In the extreme positions of the valve ("full load" and "idle"), the corresponding contacts are closed...

Removal and installation the lambda probe
The lambda probe is installed in the exhaust pipe. It transmits voltage signals to the computer, the value of which depends on the oxygen content in the...

Removal and installation the activated carbon filter
The activated carbon filter is located in the area of the right wheel. The filter accumulates gasoline vapors coming out of the fuel system when the engine is...

Checking the fuel pump relay
The fuel pump relay is located in the relay box on the left rear of the engine compartment. It supplies operating voltage to the fuel pump motor. If the spark...

Checking the performance of the fuel pump
Disconnect the fuel line from the intake manifold and place it in a container with a capacity of approximately 5 liters. Remove the fuel pump relay. The relay...

Removal and installation the fuel pump
Fuel injection systems Motronic ML4.1, M2.5, M2.7 The fuel pump is located on the bottom of the car near the fuel tank. Removal Warning! Gasoline vapors are...

Replacing the fuel level sensor (all engines)
In cars produced since September 1991, the fuel level sensor is made of plastic. Removal and installation of plastic and metal sensors is performed in the same...

Replacing the air filter
The air filter should be replaced every 2 years or every 30,000 km. Removal Open the clamps on the filter housing cover. Remove the two Phillips head screws....

Checking fuel hoses
Check fuel hoses for cracks, pores, and deformations. Replace hoses if necessary. Hoses that are wet on the outside must be replaced.

Replacing the fuel filter
The fuel filter should be replaced every 2 years or every 30,000 km. It is located on the bottom of the car near the fuel tank. Cars with Motronic injection...

Fuel injection system malfunctions
Before carrying out any injection system checks, the following conditions must be met: Properly start the engine. When the engine is warm, press the...

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