Removal and installation
1.6L soch engines
1. Relieve pressure in the fuel system and disconnect the negative terminal from the battery.
2. Loosen the clamp and disconnect the air intake tube from the throttle body cover. Disconnect the hoses from the cover.
3. Unscrew the screws securing the throttle body cover.
4. Remove the cap and o-ring from the top of the throttle body.
5. Release the clamps and disconnect the electrical connectors from the throttle potentiometer and the idle speed stepper motor.
6. Remove the fuel supply hose from the side of the throttle body.
7. Disconnect the accelerator link from the ball joint on the throttle body.
8. Disconnect the vacuum hoses and crankcase ventilation hoses from the throttle body.
9. Unscrew the nuts securing the throttle body to the intake manifold and remove the throttle body along with the gasket (in the photo - SOCH 1.6 l engine).
10. Unscrew the screws and remove the upper section of the throttle body.
11. Check that the mating surfaces of the throttle body section are clean and dry, install a new gasket, install the upper throttle body section and secure with screws. Before installing the screws, coat the threads of the screws with an anti-loose agent.
12. Check that the mating surfaces of the throttle body and intake manifold are clean and dry, install a new gasket and install the throttle body to the manifold. Apply an anti-loose agent to the threads of the throttle body mounting nuts, and tighten the nuts gradually and sequentially to the required torque.
13. Connect hoses and accelerator rod.
14. Connect the fuel supply hose to the throttle body, tightening the nut to the specified torque. Connect electrical connectors.
15. Install the gasket on the top throttle body shroud, put the shroud in place and secure with screws. Connect the air inlet and vacuum hoses.
16. Connect the battery.
Doch engines 1.6 l
1. Depressurize the fuel system and remove the negative terminal from the battery.
2. Remove the engine oil filler cap, unscrew the screws and remove the protective cover. Reinstall the plug.
3. unscrew the bolts (indicated by arrows) and remove the plastic wiring harness bracket from the rear of the intake manifold.
4. Disconnect electrical connectors (indicated by arrows) from the oxygen sensor, ignition unit, purge valve and other connectors on the left side of the manifold.
5. Unscrew the nuts securing the ground bar to the cylinder head and manifold and move the plastic bracket away from the manifold.
6. Remove the ignition block.
7. Remove the purge valve from the left front end of the manifold and disconnect the valve hose from the manifold.
8. Remove the vacuum brake booster hose (1) from the intake manifold. Remove the crankcase ventilation hose (2), the fitting of which is located next to the hose fitting of the vacuum brake booster.
9. Loosen the clamp and remove the air intake duct from the throttle body.
10. Remove the bolts securing the accelerator cable bracket to the manifold. Remove the bracket and remove the accelerator cable from the throttle cam and move it to the side.
11. Unscrew the bolts and remove the throttle body from the intake manifold.
12. Loosen the union nuts and disconnect the fuel hoses from the fuel line.
13. Rotate the throttle bodies, loosen the clamps and remove the coolant supply hoses from the throttle body.
14. Disconnect the electrical connectors from the throttle potentiometer and idle speed control stepper motor, then remove the throttle body from the engine compartment.
15. Installation is made in sequence, return to removal. In this case, the accelerator cable must be adjusted.
Engines 1.8 and 2.0 l
1. Remove the ground wire from the battery.
2. Disconnect the electrical connectors from the engine intake air temperature sensor and air flow meter.
3. Loosen the clamp and remove the crankcase ventilation hose from the rear of the cylinder head cover.
4. Loosen the clamps and remove the air intake duct from the air filter and throttle body.
5. Remove the mounting bracket and separate the accelerator cable from the throttle cam ball joint.
6. Unscrew the bolts and remove the accelerator cable bracket from the throttle body.
7. Pinch the coolant supply hoses to the rear of the throttle body, loosen the clamps and remove both hoses.
8. Remove the electrical connectors from the throttle potentiometer and idle control ball motor.
9. Mark the location and disconnect the hoses from the throttle body, then unscrew the nuts and remove the throttle body from the intake manifold.
10. Installation is carried out in the reverse order of removal, while it is necessary to adjust the accelerator cable.
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