Technical characteristics of engines APE, AUA 1.4 16V Table 4.1. Engine Specifications Engine code The engine code is affixed to the timing belt cover. The engine code is also included on the vehicle identification plate and is...
Engine disassembly Engine elements are shown in fig. 4.2 a-c. Pic. 4.2 a. Engine elements: 1 - Upper part of the timing belt cover; 2, 7, 10, 11, 16, 18, 22, 23 - Bolts; 3 - Camshaft pulley; 4 -...
Removing and installing ribbed belt To remove the ribbed belt: remove the right soundproof casing; mark the direction of movement of the belt; using a wrench, move the tension roller in the direction of the arrow...
Checking the valve timing 1. Remove the top part of the timing belt cover 2. Set the piston of the first cylinder to TDC. To do this, align the mark on the crankshaft pulley with the edge of the O mark...
Removing and installing timing belt Removing 1. Remove the engine cover (arrows) (pic. 4.5 a). 2. Remove the air filter from the air intake pole. 3. Remove the upper part of the timing belt cover. 4. Set the piston...
Cylinder block, sealing flange and flywheel Cylinder block. sealing flange and flywheel are shown in fig. 4.6. Pic. 4.8. Cylinder block, sealing flange and flywheel: 1.5, 6, 8 - Bolts; 2 - Oil intake; 3 - Aluminum block of...
Connecting rod and piston group The piston and connecting rod are shown in fig. 4.7 a. Pic. 4.7 a. Piston and connecting rod: 1 - Retaining ring; 2 - Piston pin; 3 - Piston; 4 compression rings; 5 - Oil scraper...
Cylinder head The cylinder head is shown in fig. 4.8 a. Pic. 4.8 a. Cylinder head: 1 - Upper part of the timing belt cover; 2 - Main toothed timing belt; 3 - Auxiliary timing belt; 4, 7, 11, 15...
Removal and installation of the camshaft housing Removing 1. Disconnect the negative cable from the battery. 2. Remove the main toothed timing belt. 3. Remove adapters with high voltage wires. 4. Disconnect the four-pin wiring...
Compression test 1. Remove the engine cover (arrows) ( rice. 4.5 a ). 2. Disconnect the high voltage wire with adapter from the spark plug. 3. Remove the spark plug. 4. Disconnect the four-pin...
Gas distribution mechanism Elements of the gas distribution mechanism are shown in fig. 4.11 a. Pic. 4.11 a. Elements of the gas distribution mechanism: 1, 6, 8, 12, 23 - Bolts; 2 - Pulleys of camshafts; 3...
Valve seat processing 1. Insert the valve and press it firmly against the seat. 2. Measure the distance between the end of the valve stem and the top edge of the cylinder head (pic. 4.12 a). 3....
Checking the valve guide 1. Insert the new valve into the sleeve so that the end of its stem is flush with the edge of the valve sleeve. 2. Determine the gap between the sleeve and the valve (pic. 4.12...
Lubrication system The elements of the lubrication system are shown in fig. 4.13. Pic. 4.13. Elements of the lubrication system: 1 - Oil pressure sensor (0.3-0.7 bar); 2, 13, 16, 23, 28 - Bolts; 3 -...
Checking oil pressure and pressure sensor 1. Unscrew the pressure sensor and screw it into the tester (pic. 4.14). 2. Screw the tester adapter into the hole for the pressure sensor in the cylinder head. 3. Connect the...
Cooling system Elements of the cooling system are shown in fig. 4.15 a-c. Pic. 4.15 a. Elements of the cooling system: 1 - Clamp; 2 - Radiator; 3 - Bolts; 4 - Mounting cross member; 5 - Radiator...
Fuel pump check Elements of the Polo Classic, Polo Estate power system are shown in rice. 3.23 a chapter 3, elements of the Caddy power system - on rice. 3.23 b chapter 3. Checking the...
Electronic engine management system (EPC) Elements of the electronic engine management system (EPC) shown on. pic. 4.17 a, b. Pic. 4.17 a. Elements of the electronic engine management system (EPC): 1 - Bracket; 2 -...
Checking the Accelerator Pedal Position Sensor Both accelerator position senders G79 and G185 on the accelerator pedal transmit the movement of the accelerator pedal to the engine control unit independently of each other. Both...
Gasoline vapor recovery system Elements of system of catching of vapors of gasoline are shown in fig. 4.21. Pic. 4.21. Elements of the gasoline vapor recovery system: 1 - Activated carbon filter; 2 - Pressure...
Exhaust gas exhaust system Elements of system of release of the fulfilled gases are shown on fig. 4.22. Silencer with supports for Polo Classic cars. Polo Estate - on rice. 3.27 b in Chapter 3, the muffler...
Exhaust gas recirculation system Elements of system of recirculation of the fulfilled gases are shown on fig. 4.23. Pic. 4.23. Elements of the exhaust gas recirculation system: 1 - Gasket; 2 - Inlet pipe; 3, 9 -...
Fuel injection and ignition control system Table 4.2. Technical characteristics of the fuel injection and ignition control system The arrangement of elements of system of injection of fuel is shown in fig. 4.24 a, b. The...
Self-diagnosis of the injection system The fuel injection system control unit is equipped with a fault memory. which records malfunctions of sensors or systems, indicating the type of malfunction. Sometimes there are...
Connecting a tester All functions can be performed using the VAG 1551/1552 fault code reader. They can also be carried out using the new VAS 5051 tester in the operating mode of the engine...
Checking and clearing the fault memory Fault memory interrogation To interrogate the fault memory, a VAG 1551 fault code reader and a VAG 1551/3 wire are required. 1. Connect the VAG 1551 fault code reader (V.A.G 1552)...
Reading a block of measured values 1. Connect the VAG 1551 fault code reader (V.A.G 1552) and dial «01» «Engine electronics». The engine must be running at idle. The display should show the following information:...
Checking the intake manifold pressure sensor 1. Connect the VAG 1551 fault code reader (V.A.G 1552) and dial «01» «Engine electronics». The engine must be running at idle. The display should show the following information:...
Checking the intake air temperature sensor If the intake air temperature sensor is faulty or the wiring is damaged, the control unit operates with a replaced temperature of 20°C. 1. Connect tester VAG 1551 and dial «01» to...
Checking the coolant temperature sensor 1. Connect tester VAG 1551 and dial «01» to select a function «Address word» engine control unit. The engine must be running at idle. The display should show the following...
Checking the crankshaft speed sensor If the sensor fails while the engine is running, the engine may stop. 1. Disconnect the 3-pin wiring connector from the crankshaft speed sensor (arrow) (on the thermostat housing)...
Checking the fuel pressure regulator and holding pressure Attention! The power system is under high pressure. Before disconnecting any of the fuel system components, it is recommended to place rags around the connection. Then relieve the...
Hall sensor test 1. Remove the engine cover (arrows) (pic. 4.44). 1. Disconnect the three-pin wiring connector from the Hall sensor (arrow) (pic. 4.45). 2. Connect the multimeter using wires from...
Checking the ignition coil 1. Disconnect the four-pin wiring connector from the ignition coil (arrow) (pic. 4.46). 2. Fuse number 34 must be in working order (pic. 4.47). 3. Connect a multimeter to check...
Fault codes Fault code Failed node SAE V.A.G P0106 16490 Intake manifold pressure, impossible signal P0107 16491 Intake manifold pressure signal too low P0108 16492 Intake manifold pressure...