how to replace chev 2004 silverado ac actuator
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Filed Under (Chevrolet) by admin on 20-01-2011
Condition General Motors has decided to conduct a Voluntary Emission Recall involving certain 2001-03 Chevrolet Silverado and GMC Sierra model vehicles, equipped with a 4.3L V6 (RPO L35 – VIN W or RPO LU3 – VIN X) engine. The ignition distributor cap and rotor in these vehicles may corrode and cause ignition system failure. This condition may result in rough engine idle, misfire, stalls, engine cranks but does not run and/or illumination of the Malfunction Indicator Lamp (MIL). Correction Dealers are to inspect the distributor ignition ventilation holes and, if necessary, replace the distributor cap and rotor, remove the External Ignition Protection (EIP) vent screens and install a foam sleeve around the A/C accumulator line. Vehicles Involved Involved are certain 2001-03 Chevrolet Silverado and GMC Sierra model vehicles, equipped with a 4.3L V6 (RPO L35 – VIN W or RPO LU3 – VIN X) engine and built within these VIN breakpoints: Service Procedure 1. Raise the engine hood and inspect the ignition distributor ventilation holes, located in the base of the distributor, to see if the External Ignition Protection (EIP) screens are present. 2. If the EIP vent screens are present: • Remove the vent EIP screens using the procedure listed in Step 3. • Refer to the appropriate procedure in the Engine Controls sub-section of the applicable Service Manual and replace the distributor cap and rotor. 3. Remove the vent screens (1), located in the base of the distributor, by inserting a plastic- handled, long blade awl or pick (2) into each of the two airflow vent holes and popping out the screen. If there are no EIP vent screens in the airflow vent holes, check the vent holes for debris and clear as necessary before reassembling the distributor. 4. If the EIP vent screens are not present, the distributor cap and rotor do not require replacement. 5. Install the foam sleeve, P/N 15190971, around the section of the A/C accumulator line that is routed directly above the distributor. Cut a slit in the sleeve and secure it to the line using tie- straps. Do not install a new foam sleeve if a sleeve is already in place on the A/C accumulator line. 6. 2001-03 CALIFORNIA, 2003 MASSACHUSETTS & MAINE VEHICLES ONLY : Install a Recall Identification Label. Also, for California vehicles, complete a “Proof Of Correction” certificate upon recall completion.
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
Filed Under (Hyundai) by admin on 25-04-2010
1. At the crank position sensor, check for battery voltage to be present on the Red wire with the key on and cranking. The Black wire should be a good ground and the Blue wire should have 5 volts on it from the computer. One may have to disconnect the crank sensor to check for the 5 volt reference. 2. During crank look for a good 5 volt square wave signal on the Blue wire. 3. Check at the ignition coils for good battery voltage key on and cranking. If there is a loss of voltage during crank check the ignition failsafe relay. 4. Check for any stored engine codes. Crankshaft Position (CKP) Sensor Ignition Failsafe Sensor The ignition failsafe sensor supplies battery voltage to the ignition coils. The ignition coils can look like they have good battery voltage key on but during crank the ignition failsafe relay can stop sending voltage to the ignition coils.
Filed Under (Mazda) by admin on 06-12-2010
Full-auto Air Conditioner 1. Connect battery positive voltage to terminal E or F and ground to terminal F or E of the airflow mode actuator. 2. Verify that the airflow mode actuator operates as shown. If not as specified, replace the airflow mode actuator. 3. Verify that the resistance between the terminals of the airflow mode actuator is as shown in the graph. If not as specified, replace the airflow mode actuator. Manual Air Conditioner Operating inspection 1. 2. 3. 4. 5. Turn the fan switch to OFF. Turn the mode dial to VENT. Turn the ignition switch to ON position, (engine ON) Turn the fan switch 4th position. Turn the mode dial from VENT to DEFROSTER. 6. Verify that the airflow mode actuator moves smoothly. If not as specified, inspect the airflow mode main link and sub link for clogging and deformity. If the actuator cannot move at all, go to voltage inspection. Voltage inspection 1. Disconnect the airflow mode actuator connector. 2. Turn the ignition switch to ON position, (engine OFF) 3. Verify that the voltage between the terminals of airflow mode actuator (harness-side) is as shown in the table. If not as specified, perform the harness inspection and mode switch inspection. (See CLIMATE CONTROL UNIT INSPECTION, Manual Air Conditioner.) If as specified, replace the airflow mode actuator.