Filed Under (Oldsmobile) by admin on 10-04-2011
Refer to Engine Controls Schematics MAF, Secondary Air Injection Pump Bypass Solenoid, IAC and Secondary AIR Pump . Circuit Description The AIR pump is used on this vehicle to lower tail pipe emissions on start-up. The powertrain control module (PCM) grounds the AIR pump relay control circuit, which energizes the AIR pump. The PCM also grounds the AIR solenoid valve control circuit, which energizes the AIR solenoid valve. The AIR solenoid valve opens allowing manifold vacuum to open the AIR control valves. The PCM enables both control circuits when AIR system operation is desired. When the AIR system is active, the AIR pump forces fresh air into the exhaust stream in order to accelerate catalyst operation. The AIR control valves replace the conventional check valves. When the AIR system is inactive, the AIR control valves prevent air flow in either direction. DTC P0412 applies to the AIR solenoid control circuit. DTC P0418 applies to the AIR pump relay control circuit. DTC P0410 sets if an air flow problem is detected. The PCM will run two tests using the heated oxygen sensor (HO2S) voltage to diagnose the AIR system. Both tests have two parts. The passive test is performed during regular AIR pump operation. The passive test consists of the following: Passive Test Part 1 When the AIR system is enabled, the PCM monitors the HO2S voltage. If the HO2S voltage goes below a threshold, the PCM interprets this as an indication that the AIR system is operational. Passive Test Part 2 When the AIR system is disabled, the PCM monitors the HO2S voltage. The HO2S voltage should increase above a threshold and switch normally. If both of these tests indicate a pass, no further action is taken. If one of the above tests failed or is inconclusive, the diagnostic will proceed to test two. The active test is performed specifically for diagnostic purposes. Test two consists of the following: Active Test Part 1 During this test the PCM turns the AIR system on during closed loop operation. When the AIR system is activated, the PCM monitors the HO2S voltage. If the AIR system is operating properly, the HO2S voltage should go below a predetermined threshold. Active Test Part 2 The PCM turns the AIR system off. The HO2S voltage should return to above a rich threshold.
Filed Under (Subaru) by admin on 02-01-2011
Removal of Factory Intake 1. 2. Turn the ignition OFF and disconnect the vehicle’s negative battery cable. Loosen and remove the two bolts that secure the air inlet duct to the radiator core support, then remove the air inlet duct. Loosen the clamps at the air cleaner assembly and turbo inlet tube, then remove the stock intake tube. Loosen and remove the two bolts that secure the air cleaner assembly. Pull upwards to remove the air cleaner assembly. Using the bolt removed to secure the ABS control bracket. Loosen and remove the two screws that secure the mass air sensor to the air cleaner assembly, then remove the mass air sensor. Raise the vehicle and support with the jack stands, then remove the front passenger side tire. Remove the five plastic push/screw clips that secure the inner wheel house valance. Remove the 6 screw in push clips that secure the air duct to the lower valance, then remove the air duct. Remove the two remaining push clips that secure the lower valance, then pull the valance down. From inside the apron, remove the push clip that secures the apron to the upper fender. Remove the hex nut that secures the air intake resonator to the inner fender. Loosen and remove the second hex nut that secures the air intake resonator from underneath the vehicle. Remove the air intake resonator. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. Install of Intake 16. Install the reducer and clamps onto the turbo and secure. 17. Loosen and remove the hex bolt on the cam cover. 18. Using the provided allen bolts, secure the mass air sensor into the adapter on the intake tube. 19. Using the allen bolts, secure the mass air sensor into the adapter on the intake tube. 20. Slide the intake tube into the reducer and secure the mass air sensor into the adapter on the intake tube. 21. Tighten the clamp on the intake tube. 22. Install the reducer and clamps onto the intake tube. 23. From underneath the vehicle loosen and remove the hex nut that secures the ABS pump to the inner fender. 24. Slide the cold air tube intake tube from underneath the vehicle into the hole in the inner fender, then line up the bracket with the ABS bolts, and tighten with the nut remove. 25. Slide the reducer onto the cold air intake tube. 26. Install the Bomz Filtercharger onto the cold air intake tube and secure with clamp. 27. Reverse the removal process for the plastic wheelhouse valance and air duct with the stock push clips. 28. Reconnect the mass air sensor electrical connection. 29. Reconnect the negative battery cable and double check to make sure everything is tight before starting the vehicle. Resetting the ECU This is to be completed at your own risk. This procedure will reset the computer so that it may “learn” of your new intake. We are not to be held liable for any mishaps that you may occur while completing this process. • • Disconnect the Negative battery cable for 5 minutes. Reconnect the battery cable and false panel cover.
Filed Under (Porsche) by admin on 30-05-2010
REMOVAL 1. Remove the covers over the heating/air-conditioning system, battery and fluid tank. Disconnect and remove the battery. 2. Remove the refrigerant by suction using the service unit. 3. Detach the air-conditioning lines at the expansion valve. Immediately close connections and lines with plugs so that they are air-tight. 4. Remove steering wheel and loosen steering column panel. Comply with safety regulations when handling airbag units (see SAFETY REGULATIONS FOR VEHICLES WITH AIRBAG AND BELT TENSIONER ). 5. Undo the central screw (clamp) on the steering column switch from below and pull it forwards slightly. Remove the cover at the top and disconnect the electrical plug connections. Remove the steering column switch.
Filed Under (Chrysler) by admin on 01-08-2010
REMOVAL WARNING: REFER TO THE APPLICABLE WARNINGS AND CAUTIONS FOR THIS SYSTEM BEFORE PERFORMING THE FOLLOWING OPERATION. 1. Recover the refrigerant from the refrigerant system. 2. Remove the air cleaner housing from the right side of the engine compartment. 3. Remove the screw that secures the liquid line front section fitting to the top of the filter-drier. 4. Disconnect the liquid line fitting from the filter-drier inlet port. 5. Remove the seal from the liquid line fitting and discard. 6. Install plugs in, or tape over the opened liquid line fitting and the filter-drier inlet port. 7. Remove the screw that secures the liquid line rear section fitting to the top of the filter-drier. 8. Disconnect the liquid line fitting from the filter-drier outlet port. 9. Remove the seal from the liquid line fitting and discard. 10. Install plugs in, or tape over the opened liquid line fitting and the filter-drier outlet port. 11. Remove the two nuts that secure the filter-drier mounting bracket to the weld studs on the side of the right front strut tower. 12. Remove the filter-drier and mounting bracket unit from the studs.
Filed Under (Toyota) by admin on 11-02-2016
AIR CONDITIONING UNIT REMOVAL DISCHARGE REFRIGERANT FROM REFRIGERATION SYSTEM HINT: Evacuate air from refrigeration system. Charge system with refrigerant and inspect for leakage of refrigerant. Specified amount: w/o Rear A/C: 900 ?50g (31.74 ?1.76oz.) w/Rear A/C 1,150 ?50g (40.56 ?1.76oz.) 1. DRAIN ENGINE COOLANT HINT: It is not necessary to drain out all the coolant.
2. DISCONNECT WATER HOSE FROM HEATER RADIATOR PIPES HINT: 3. Push the water hose onto the heater radiator pipe as far as ridge on the pipe and install the hose clip. Install the hose clip in a position. DISCONNECT LIQUID AND SUCTION TUBES 4. Remove the 2 bolts and the both tubes. Torque: 10 Nm (100 kgf-cm, 7 ft. lb.)