Vehicle injection system (gasoline) Audi 80 B3
Possible malfunctions of the injection system
The fuel tank must be full, the engine in good condition, the battery charged. The starter must provide the required number of revolutions. The ignition system...
The fuel tank must be full, the engine in good condition, the battery charged. The starter must provide the required number of revolutions. The ignition system...
KE-Jetronic injection system
1 - injection valve (injector) 2 - cold start valve 3 - dispenser (distributor) fuel 4 - electromagnetic pressure control device 5 - fuel pressure regulator 6...
1 - injection valve (injector) 2 - cold start valve 3 - dispenser (distributor) fuel 4 - electromagnetic pressure control device 5 - fuel pressure regulator 6...
Fuel injection system KE-Motronic
In this control system, the injection and ignition systems are combined in one control unit. Precise regulation of the injection quantity and ignition timing...
In this control system, the injection and ignition systems are combined in one control unit. Precise regulation of the injection quantity and ignition timing...
Multipoint injection system MPI (Multipoint — Injection)
170 hp engines with the 7A designation are equipped with the so-called MPI injection system. MPI means that the injection moment and duration for each cylinder...
170 hp engines with the 7A designation are equipped with the so-called MPI injection system. MPI means that the injection moment and duration for each cylinder...
Checking and adjusting idle speed and CO content. KE-Jetronic only
Note: The following describes the adjustment on a 90 hp engine. (jN designation). Different adjustment points for other engines are referred to at the end of...
Note: The following describes the adjustment on a 90 hp engine. (jN designation). Different adjustment points for other engines are referred to at the end of...
Checking and adjusting idle speed and CO content. Engines 90, 113, 115, 136 hp.
Connect the ammeter with the VAG 1315A/1 measuring cable to the electrohydraulic regulator. Set the measurement limit to 200 mA. Turn on the ignition and check...
Connect the ammeter with the VAG 1315A/1 measuring cable to the electrohydraulic regulator. Set the measurement limit to 200 mA. Turn on the ignition and check...
Checking and adjusting idle speed and CO content. Engine 113 hp (designation SD)
Note: Checking and adjusting the idle speed, CO content and ignition timing should be done together. The lambda probe remains connected. Check the closed state...
Note: Checking and adjusting the idle speed, CO content and ignition timing should be done together. The lambda probe remains connected. Check the closed state...
Checking and adjusting idle speed and CO content. Engine 115 hp (designation PS)
Note: Idle speed, CO content and ignition timing must be checked and adjusted together. The lambda probe remains connected during the check. Clamp the...
Note: Idle speed, CO content and ignition timing must be checked and adjusted together. The lambda probe remains connected during the check. Clamp the...
Checking and adjusting idle speed and CO content. Engine 136 hp (designation NG)
Caution: Idle speed, CO content and ignition timing must be checked and set together. Idle speed cannot be adjusted. The idle speed adjusting screw must be...
Caution: Idle speed, CO content and ignition timing must be checked and set together. Idle speed cannot be adjusted. The idle speed adjusting screw must be...
Checking and adjusting idle speed and CO content. Engines 113, 115 hp (designations ZA, AAD)
Note: Idle speed, CO content and ignition timing must be checked together. Only CO content and ignition timing are subject to adjustment. The lambda probe...
Note: Idle speed, CO content and ignition timing must be checked together. Only CO content and ignition timing are subject to adjustment. The lambda probe...
Checking the lambda control (KE-Jetronic only)
Check conditions: The exhaust system between the catalytic converter and the cylinder head must be tight. The electrohydraulic regulator and idle speed...
Check conditions: The exhaust system between the catalytic converter and the cylinder head must be tight. The electrohydraulic regulator and idle speed...
Checking the increase in idle speed. Only engines 90, 102, 112 hp (designations JH, DZ, ABB)
As soon as the idle speed drops below 700 rpm, for example due to additionally switched on energy consumers, the dual-line valve I increases the speed back....
As soon as the idle speed drops below 700 rpm, for example due to additionally switched on energy consumers, the dual-line valve I increases the speed back....
Idle speed stabilization check (KE-Jetronic only)
Caution: With the ignition off, disconnect the plug on the control valve. Checking the work Turn off the ignition and check the control valve for vibration. If...
Caution: With the ignition off, disconnect the plug on the control valve. Checking the work Turn off the ignition and check the control valve for vibration. If...
Mono-Jetronic injection system
Since 3.88 g, the 66 kW (90 hp) AUDI 80 engine has been equipped with the Mono-Jetronic central injection system. Unlike the K/KE-Jetronic system,...
Since 3.88 g, the 66 kW (90 hp) AUDI 80 engine has been equipped with the Mono-Jetronic central injection system. Unlike the K/KE-Jetronic system,...
Querying the memory of recorded faults
The electronics in the control unit record faults in the Mono-Jetronic system. They are immediately recorded in the fault memory after the first occurrence. At...
The electronics in the control unit record faults in the Mono-Jetronic system. They are immediately recorded in the fault memory after the first occurrence. At...
Checking idle speed and CO content
Note: Idle speed and CO content must be checked together. They cannot be adjusted. Warm up the engine, oil temperature 80°C. Turn off all electrical consumers....
Note: Idle speed and CO content must be checked together. They cannot be adjusted. Warm up the engine, oil temperature 80°C. Turn off all electrical consumers....
K-Jetronic system
AUDI 80/90 models with fuel injection and without a regulated catalytic converter are equipped with the K-Jetronic system, engine designations: DZ, KV....
AUDI 80/90 models with fuel injection and without a regulated catalytic converter are equipped with the K-Jetronic system, engine designations: DZ, KV....
Checking and adjusting idle speed and CO content (only on models equipped with K-Jetronic)
Note: The adjustment described below is for a 112 hp engine. (dZ designation). The differences in adjustment of other engines are given at the end of the...
Note: The adjustment described below is for a 112 hp engine. (dZ designation). The differences in adjustment of other engines are given at the end of the...
Checking and adjusting the back-up valve (K-, K-Jetronic)
The air flow meter's support flap rises more or less depending on the amount of air being sucked in. If the flap's initial position is too deep, the engine...
The air flow meter's support flap rises more or less depending on the amount of air being sucked in. If the flap's initial position is too deep, the engine...
Checking and setting the free travel of the back-up valve (K-, K-Jetromic, KE-Jetromic)
If the engine does not start or starts poorly, the cause may be an incorrectly installed booster valve. Free play is the clearance between the control piston...
If the engine does not start or starts poorly, the cause may be an incorrectly installed booster valve. Free play is the clearance between the control piston...
Checking the adjusting lever and control piston (K-, K-Jetronic, KE-Jetronic)
The control piston in the fuel dispenser is connected to the back-up valve. The piston opens the channel for the fuel outlet and thus determines the injection...
The control piston in the fuel dispenser is connected to the back-up valve. The piston opens the channel for the fuel outlet and thus determines the injection...
Removal and installation the lambda probe
Removal Disconnect both plug connections. Raise the car. Unscrew the lambda probe in front of the catalytic converter. If necessary, unscrew the lower trim of...
Removal Disconnect both plug connections. Raise the car. Unscrew the lambda probe in front of the catalytic converter. If necessary, unscrew the lower trim of...
Removal, installation, testing of cold start valve (K-, KE-Jetronic, KE-Jetronic)
The cold start valve injects fuel when the starter is engaged on a cold engine. A faulty cold start valve causes difficulty starting (cold and warm), dips in...
The cold start valve injects fuel when the starter is engaged on a cold engine. A faulty cold start valve causes difficulty starting (cold and warm), dips in...
Checking, removing and installing the thermal time switch (K-, KE-Jetronic not suitable for NG, 6A)
The thermal time switch limits the injection time of the cold start valve depending on the coolant temperature. A faulty thermal time switch will cause...
The thermal time switch limits the injection time of the cold start valve depending on the coolant temperature. A faulty thermal time switch will cause...
Checking the additional air valve (engines 90, 102, 112 hp; designations JM, DZ, ABB)
During warm-up, a larger amount of fuel-air mixture is supplied to the engine than corresponds to the nominal adjustment of the throttle valve. To do this,...
During warm-up, a larger amount of fuel-air mixture is supplied to the engine than corresponds to the nominal adjustment of the throttle valve. To do this,...
Fuel pump
1 - holder 2 - fuel pressure accumulator 10 cm³ for KE-Jetronic, 20 cm³ for K-Jetronic 3 - nut, 10 Nm 4 - fuel filter. Installation position: the arrow on the...
1 - holder 2 - fuel pressure accumulator 10 cm³ for KE-Jetronic, 20 cm³ for K-Jetronic 3 - nut, 10 Nm 4 - fuel filter. Installation position: the arrow on the...
Checking the fuel pump
Test conditions: Battery charged (12V), fuel filter and pre-filter in perfect condition. Checking the power supply Check the fuel pump fuse. K-Jetronic: fuse...
Test conditions: Battery charged (12V), fuel filter and pre-filter in perfect condition. Checking the power supply Check the fuel pump fuse. K-Jetronic: fuse...
This section is available on russian, bulgarian, belarusian, ukrainian, serbian, croatian, romanian, polish, slovak, hungarian
Similar sections of other Audi car models:
Power unit: Power system (injector) Audi 100 C3 (1982-1990)
Power unit: Fuel injection system Audi A3 Type 8L (1996-2003)
Power unit: Injection and control system Audi A4 B6 (2000-2006, petrol)
Power unit: Injection system (gasoline) Audi A6 C5 Allroad (1999-2005)
Engine 1.4 l (diesel): Fuel injection system Audi A2 (1999-2005)
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Power unit: Injection system (gasoline) Audi A6 C5 Allroad (1999-2005)
Engine 1.4 l (diesel): Fuel injection system Audi A2 (1999-2005)
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