Filed Under (Mazda) by admin on 15-11-2010
MIL ILLUMINATION WITH P0171, P1170, LACK OF POWER, HESITATION APPLICABLE MODEL(S)/VINs All 1999-2000 Protege 1.6L with VINs lower than JM1 BJ222* *0 300996. DESCRIPTION Some vehicles may exhibit MIL illumination with any of the following symptoms: DTC P0171, DTC P1170, Lack of power, Hesitation, Unstable idle. These conditions may be caused by contamination of the mass air flow sensor wires. Customers having this concern should have their vehicle repaired using the following procedure. REPAIR PROCEDURE 1. Verify customer concern. 2. Record DTC and Freeze Frame data. 3. Inspect intake system for vacuum leaks. 4. Identify production date on MAF sensor. – If MAF sensor has a production date before 07B27 (July 27, 2000), proceed to STEP 5. – If MAF sensor has a production date on or after 07B27 (July 27, 2000), this Service Bulletin does not apply. Refer to Workshop Manual for further diagnostic procedures. 5. Clean surface surrounding MAF sensor. 6. Replace MAF sensor. Note: Make sure 0-ring is correctly positioned on replacement MAF sensor before installation. Caution: ^ Do not allow water to enter MAF sensor connector. ^ Handle replacement MAF sensor with care. 7. Inspect air cleaner and correct any unfiltered air leaks: ^ Improperly positioned air cleaner element and/or deformed seal. ^ Broken tabs, cracks and/or deformities of the air cleaner. 8. Disconnect negative battery cable or pull INJ fuse to erase and reset KAM (Keep Alive Memory). 9. Verify repair.
Filed Under (Ford) by admin on 21-10-2010
PURPOSE The Mass Air Flow (MAF) sensor directly measures the mass of air flowing into the engine. LOCATION Between the air filter housing and throttle body assembly. CONSTRUCTION The sensing element is a thin platinum wire wound on a ceramic bobbin and coated with glass. OPERATION The MAF operates on the principle that if a mass is maintained at a constant temperature above ambient, the thermal loss is proportional to the mass flow of the cooling medium it is subjected to. The sensor output is a DC (analog) signal ranging from 0.5 to 5.0 volts used by the Electronic Control Assembly (ECA) to calculate fuel injector pulse width for stoichiometry (14.7 to 1). The “hot wire” is maintained at 392°F (200°C) above
Filed Under (BMW) by admin on 02-09-2010
Removing intake air housing with mass air flow sensor, refer to Powertrain Management. Remove bulkhead heater (air collector). This operation is described in section on removing complete wiper console, refer to Wiper and Washer Systems. Place cable channel to one side. Remove adapter from brake force booster. Remove cover from injection valves. Unclip plug connections from oxygen sensors. Unfasten plug connection from VANOS solenoid valve. Lift connector strip off injection valves and place to one side
Filed Under (BMW) by admin on 25-08-2010
Removing intake filter housing with mass air flow sensor, refer to Powertrain Management Removing cylinder head cover, refer to Valve Cover Removing all spark plugs. Removing intake air manifold, refer to Intake Manifold Removing VANOS adjustment unit, refer to Camshaft, Lifters and Pushrods, Camshaft, Engine. Unfastening sensor for cylinder recognition, refer to Powertrain Management, Cylinder Identification Sensor, Service and Repair. Drain off coolant and dispose of correctly. Installation: Tightening torque, refer to Engine Specifications Bleeding cooling system and checking for water leaks, refer to Cooling System Remove exhaust pipe from exhaust manifold. Release water hose from branch flange. Unfasten heating intake and heating return hoses. Removal of cylinder head is described separately from installation. Assembly sequence for removal and installation is different. Unfasten screws and remove washer from exhaust camshaft. Unfasten nuts from thrust washer (intake camshaft).
Filed Under (Pontiac) by admin on 17-08-2010
Installation Instructions Part Number 200-630 2008-09 Buick Enclave 2008-09 Chevrolet Equinox Sp. 2008-09 Chevrolet Malibu 2008-09 Chevrolet Traverse 2008-09 GMC Acadia 2008-09 Pontiac G6 GXP 2008-09 Pontiac G8 2008-09 Pontiac Torrent GXP 2008-09 Saturn Outlook 2008-09 Saturn Vue XR 2008-09 Suzuki LX7 3.6L V-6 2. Disconnect the breather hose elbow from the intake tube. Loosen the two hose clamps that secure the intake tube to the throttlebody, and the mass air flow sensor. Remove the air intake tube. 1. Disconnect the negative battery cable! Remove the oil fill cap and set it aside. Lift straight up on the engine beauty cover and set it aside. Reinstall the oil fill cap after the beauty cover has been re- moved to prevent any foreign material from entering the crank- case. 3. Remove the four bolts that secure the throttlebody to the in- take manifold. 5. Install the provided bolts and washers thru the throttlebody and Poweraid Spacer and tighten to the manufacturer’s specifi- cations. 4. Install the Poweraid Spacer between the throttlebody and the intake manifold with the first supplied gasket next to the intake manifold, and the second supplied gasket next to the throttle- body as shown. Make sure the “flow” arrow printed on the spacer is pointing towards the intake manifold. 6. Reinstall the intake tube, tighten the two hose clamps, and reconnect the crankcase breather tube. Reinstall the beauty cover, and oil cap in the reverse order that they were removed. Re-connect the negative battery cable!