ASC T throttle body M52 models
1. Disconnect the connectors.
When installing, connect the PCV hose to the suction hose.
2. Disconnect the throttle cable.
When installing the cable, the gap should be 0.5 ÷ 1 mm.
3. Check the condition of the O-ring (1) and replace if necessary.
4. Loosen clamp (1), remove the bolts (2).
5. To turn out bolts of fastening of an arm of the case of a throttle and remove an arm.
6. Installation is carried out in the reverse order.
Throttle body gasket M52 models
1. Remove the air mass meter (see Section Removing and installing the air cleaner housing).
2. Remove the ASC T throttle body.
3. Disconnect the throttle cable. Disconnect and shut off the throttle body heater hoses.
In this case, a small amount of coolant flows out.
4. Turn out bolts and remove the throttle body together with consolidation. Replace gasket.
5. Installation is carried out in the reverse order. Check coolant level and correct if necessary.
Throttle body models M52TU
1. Disconnect the negative cable from the battery.
2. Remove the air cleaner housing.
3. Remove the air mass meter (see Section Removing and installing the air cleaner housing).
4. Pull the cable out of the holder (1) upwards and disengage from the throttle actuator mechanism.
When installing, adjust the throttle cable.
5. Loosen clamps (1). Disconnect the hose from the throttle body and IAC valve.
6. Disconnect the resonance valve connectors (1) and IAC valves (2), as well as D/V pressure (1) and temperature (2) engine oil.
7. Turn out bolts of fastening of a box of electroconducting.
8. Release the fuel lines and oil level sensor wire from the holder (1) on the guide tube of the engine oil level dipstick. Disconnect the oil drain pipe from the guide tube (2), remove the bolt (3) and remove the guide tube of the dipstick of the engine oil level.
When installing, replace the guide tube O-ring.
9. Pull out the wiring box (1) to the side and disconnect the connector (2) from the throttle body. Remove the bolts (3) and remove the throttle body.
10. Installation is carried out in the reverse order. Pay attention to the following points:
- Replace the throttle body O-ring;
- Fix the connector to the throttle body before connecting. To do this, while holding the body of the connector plug, turn the fixing ring on it clockwise (viewed from the free end of the fork), until the latch clicks into place. Between the protrusions on the body of the fork there is a hole through which, when properly fixed, the red locking pin should be visible;
- When connecting the connector, the white arrow mark on the plug body must match the arrow on the throttle body. Dock the connector, turn the fixing ring clockwise (viewed from the side of the electrical wiring connection to the plug);
- If the throttle valve was removed to be replaced due to a malfunction, the initial correction values should be re-entered into the ECM using the diagnostic equipment.
Throttle body ASC T models M60 and M62
1. Turn off the ignition.
2. Disconnect the hose (1). Loosen clamp (2) and remove the protective cover.
3. Disconnect the connector.
4. Hang out the throttle cable.
When installing, adjust the throttle cable so that it does not sag.
5. Turn out bolts (1-3) and remove the throttle body.
6. Installation is carried out in the reverse order.
When installing, replace the throttle body gasket.
Throttle body models M60 and M62
1. Turn off the ignition.
2. Remove the top cover of an impellent compartment.
Models with IAC valve
1. Disconnect the connector at the IAC valve and at the throttle potentiometer.
2. Press out the staples (1), loosen clamp (2) (if it is installed) and disconnect the hose. Disconnect connector (3). On models with an M62 engine, disconnect the IAT sensor harness connector.
3. Loosen clamps (1 and 2) and remove the air intake hoses together with the top section of the air cleaner housing.
4. Remove the cables (1 and 2) throttle control (gas and tempostat pedals).
During installation, the gas pedal cable must not have free play, and the free play of the tempostat cable must be 1 ÷ 2 mm.
5. Disconnect the vacuum hose from the throttle body.
6. Turn out bolts (1-6) and remove the throttle body.
7. Installation is carried out in the reverse order. Replace the throttle body gasket.
Models without IAC valve
1. Disconnect the connector (1), disconnect the vacuum pipes (4) and remove the suction pipe (3) with top section (2) air cleaner housing.
2. Disconnect the connector (1), remove the sealing ring (3), which may have remained seated in its place. Remove the screws (2) and remove the throttle body.
3. Installation is carried out in the reverse order. Replace the throttle body gasket if necessary.
Throttle body M73 models
1. Disconnect the negative cable from the battery. Switch off the ignition.
2. Remove the engine top cover.
Throttle body for cylinders No. 7-12
1. Disconnect the pipe from the throttle body. Disconnect connector (1), remove the bolts and remove the mounting bracket for the battery positive terminal in the engine compartment.
When installing, replace the gasket.
2. Release clamp (1) fasteners and remove the hose. Disconnect the hose (2). If equipped, remove the auxiliary air supply valve.
At installation, replace the fuel hose to the EVAP valve and the clamp.
Throttle Body Cylinder Nos. 1-6
1. Disconnect the pipe from the throttle body. Disconnect connector (1) and unscrew the mounting bolts.
When installing, replace the gasket.
2. Loosen clamp (1) and disconnect the hose. If equipped, remove the auxiliary air valve.
At installation, replace the fuel hose to the EVAP valve and the clamp.