Models with M52 engine
1. Turn off the ignition. Remove the air cleaner housing (see Section Removing and installing the air cleaner housing).
2. Remove the throttle bodies (see Section Removal and installation of the throttle body, replacement of its gasket).
Do not disconnect the throttle cable and hoses.
3. Remove the guide tube of the engine oil level dipstick (1). Press the latch, disconnect the connector, unscrew the two bolts (2) and disconnect the IAC valve.
4. Remove the gasket (1) and rubber band (2). Loosen clamp (3) and disconnect the hose.
5. Installation is carried out in the reverse order. Replace gasket. Finally, check the idle speed.
Models with M52TU engine
1. Follow the steps described in paragraphs 1 to 6 of Section Removal and installation of the throttle body, replacement of its gasket.
Connectors Д/В pressure and temperature of motive oil do not separate.
2. Remove the bolt (1) wiring box fixings, bolts (2) valve holder (3) IAC and remove the IAC valve from the intake manifold along with the bracket.
3. Remove valve (2) IAC with fixing rubber element (4). Pad (1) between the IAC valve and the intake manifold must be replaced. However, when reinstalling, the seal should not be installed on the IAC valve, but first in the intake manifold.
4. Installation is carried out in the reverse order.
Models with M60 and M62 engines
1. Follow the steps described in paragraphs 1 to 3 of SectionRemoval and installation of the throttle body, replacement of its gasket.
2. Hang the mount (1) and remove the IAC valve.
3. Installation is carried out in the reverse order. The O-rings on the throttle body and on the IAC valve must be clean and undamaged to ensure tightness. If the sealing rings are damaged, they must be replaced. When installing, install the O-ring on the throttle flange first.