2004 chevy trailblazer IAC
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Filed Under (Chevrolet) by admin on 16-09-2010
1. Remove the idle air control (IAC) valve connector. 2. Remove the IAC valve attaching screws (1). NOTE: If the IAC valve has been in service: DO NOT push or pull on the IAC valve pintle. The force required to move the pintle may damage the threads on the worm drive. Also, DO NOT soak the IAC valve in any liquid cleaner or solvent, as damage may result. 3. Remove the IAC valve assembly (2). ^ Clean the IAC valve O-ring sealing surface, the pintle valve seat, and the air passage. ^ The IAC valve may be cleaned. Use a shop towel or parts cleaning brush to remove any heavy deposits. ^ Any shiny spots on the pintle or seat are normal and do not indicate misalignment or a bent pintle shaft. ^ If the air passage have heavy deposits, remove the throttle body for a complete cleaning. ^ Inspect the IAC valve O-ring for cuts, cracks, or distortion. Replace the O-rings if necessary. ^ When installing a new IAC valve, be sure to replace the valve with an identical part. The IAC valve pintle shape and diameter are designed for a specific application. MEASUREMENT PROCEDURE This procedure is only for installing a new IAC valve. IMPORTANT: If installing a new IAC valve, replace the IAC valve with an identical part. The IAC valve pintle shape and diameter are designed for the specific application. Measure the distance between tip of the IAC valve pintle and the mounting flange. If the distance is more than 28 mm (1.1 in), use finger pressure to slowly retract the pintle. The force required to retract the pintle of a new valve will not cause damage to the valve. INSTALLATION PROCEDURE
Filed Under (Chevrolet) by admin on 26-07-2010
Tool Required J 41240 Fan Clutch Wrench Removal Procedure 1. Drain the coolant. 2. Remove the fan and shroud. 3. Remove the drive belt. 4. Using the J 41240, secure the water pump pulley and remove the water pump pulley bolts. 5. Remove the J 41240. 6. Remove the water pump pulley. 7. Loosen and remove the water pump bolts. 8. Remove the water pump. 9. Clean and inspect the water pump. 10. Discard and replace the gasket. Installation Procedure 1. Install a new water pump gasket. NOTICE: Refer to Fastener Notice in Service Precautions. See: Service Precautions\Vehicle Damage Warnings\Fastener Notice 2. Install the water pump and secure the water pump with the bolts. Tighten On the initial pass, tighten the bolts to 4 Nm (35 lb in). On the final pass, tighten the bolts to 10 Nm (89 lb in). 3. Install the water pump pulley. 4. Install the water pump pulley bolts.
Filed Under (Chevrolet) by admin on 10-07-2010
Important: The front and rear sections of the cooler lines can be serviced separately. Refer to the appropriate steps when servicing individual lines. Perform the following procedure when removing the cooler lines from the quick connect fittings. 1. Pull the plastic cap back from the quick connect fining and down along the cooler line about 5 cm (2 inch) . 2. Using a bent-tip screwdriver, pull on one of the open ends of the retaining ring in order to rotate the retaining ring around the quick connect fining until the retaining ring is out of position and can be completely removed. 3. Remove the retaining ring from the quick connect fitting. 4. Discard the retaining ring. 5. Pull the cooler line straight out from the quick connect fitting. Installation Procedure Important: Do not reuse any of existing fittings if there is excessive corrosion. Do not reuse any of the existing retaining rings that were removed from the existing quick connect fittings. All retaining rings being installed must be new. Ensure the following procedures are performed when installing the new retaining rings onto the fittings.
Filed Under (Audi) by admin on 15-09-2009
Check the following wire connection for open circuit according to wiring diagram:Relay carrier in E-box, plenum chamber, position 3Terminal Harness connector atignition coils Terminal 8 1 Specified value: Wire resistance max 1.5 – If necessary, repair wire connection. Audi A4 Sedan 2002-2004, Audi A4 Avant 2002-2004, Audi A4 Cabriolet 2003-2004 – 1.8 Liter 4-Cyl. 5V Turbo Generic Scan Tool, Engi…Page 5 24-158 If no malfunctions are found in wires: – Check voltage supply of Motronic Engine Control Module (ECM) voltage supply relay – J271 – Page 24-158 . – Check activation of Motronic Engine Control
Module (ECM) voltage supply relay – J271 – Page 24-159 . Checking voltage supply If specified value is not obtained:
- Connect multimeter for voltage measurement as follows. Relay carrier in E-box, plenum chamber, position 3
Filed Under (Ford) by admin on 11-05-2010
Some 1999-2004 Navigator, 2002-2003 Blackwood, 2003-2005 Aviator, 2003-2004 Marauder and 2003-2004 Mustang vehicles built before 12/19/2004 equipped with 4.6L 4V/5.4 4V engine may exhibit a runs rough, lacks power, and engine misfire, prompted by a MIL light and DTC codes P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, and P0316. ACTION Diagnose engine for engine misfire concern. If diagnostics determine an engine misfire which is characterized by leakage through exhaust valve(s), only replace the affected cylinder head(s). SERVICE PROCEDURE