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MASS AIR FLOW (MAF)—SENSOR CONTAMINATION—SERVICE TIP

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Filed Under (Ford) by admin on 27-04-2010

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FORD: 1990-1997 THUNDERBIRD 1990-1999 MUSTANG, TAURUS SHO 1991-1999 CROWN VICTORIA, ESCORT, TAURUS 1992-1994 TEMPO 1993-1997 PROBE 1995-1999 CONTOUR 1990 BRONCO II 1990-1997 AEROSTAR 1990-1999 RANGER 1991-1999 EXPLORER 1994-1996 BRONCO 1994-1997 F SUPER DUTY, F-250 HD 1994-1999 ECONOLINE, F-150, F-250 LD, F-350 1995-1999 WINDSTAR 1997-1999 EXPEDITION 1999 F-250 HD, SUPER DUTY F SERIES

LINCOLN: 1991-1999 CONTINENTAL, TOWN CAR 1993-1998 MARK VIII 1998-1999 NAVIGATOR
MERCURY: 1990-1997 COUGAR 1991-1999 GRAND MARQUIS, SABLE, TRACER 1992-1994 TOPAZ 1995-1999 MYSTIQUE 1997-1999 MOUNTAINEER

ISSUE SERVICE TIP
This TSB article is a diagnostic procedure to address vehicles that exhibit lean driveability MASS AIR FLOW (MAF) DISCUSSION symptoms and may or may not have any Diagnostic MAF sensors can get contaminated from a variety Trouble Codes (DTCs) stored in memory. of sources: dirt, oil, silicon, spider webs, potting
ACTION
compound from the sensor itself, etc. When a MAF sensor gets contaminated, it skews the transfer Follow the diagnostic procedures described in the function such that the sensor over-estimates air flow following Service Tip. The revised diagnostic at idle (causes the fuel system to go rich) and procedure is a more accurate means of diagnosing under-estimates air flow at high air flows (causes
the symptoms. fuel system to go lean). This means Long Term Fuel Trims will learn lean (negative) corrections at idle and learn rich (positive) corrections at higher air flows.

1999 Protege 1.6L 1999-00 Miata 1.8L RATTLING NOISE FROM ENGINE Service Bulletin

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Filed Under (Mazda) by admin on 18-04-2010

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APPLICABLE MODEL(S)/VINS All 1999 Protege (1.6L) with VINs lower than JM1 BJ222* X0 140057. All 1999 – 2000 Miata with (1.8L) VINs lower than JM1 NB353* Y0 155947. DESCRIPTION A rattling noise may be heard from the engine when depressing the clutch or when revving the engine in neutral. In extreme cases, customers may experience noise at all times. This concern can be caused by improperly machined number 4 main cap of cylinder blocks which may result in premature wear of the thrust bearing. Customers having this concern should have their vehicle repaired using the following procedure
REPAIR PROCEDURE
1. Verify customer concern. 2. Using a dial indicator, measure and record the crankshaft end play as shown (Protege). Rotate the crankshaft 180o, and again measure and record the crankshaft end play. – If end play is 0.3mm or more, proceed to STEP 3. – If end play is still less then 0.3mm, refer to the Work- shop Manual for further diagnostics. 3. Replace the applicable part per the Workshop Manual: • Protege – Short Engine • Miata – Partial Engine Note • Completely clean any parts that will be reused. 4. Verify the repair.

1999 Infiniti I30 3.0L 1999 Nissan Maxima 3.0L The engine cranks but will not start

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Filed Under (Infiniti) by admin on 18-05-2010

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Customer Concern: The engine cranks but will not start. It has spark. No fuel injector pulse. There is power to the fuel injectors. The security light is on, key on. The computer doesn’t recognize the key. Immobilizer system lock-out. Tests/Procedures: 1. Have the customer bring in other keys to try and then try to escape from the lock mode. 2. The vehicle needs to go to the dealer for the factory scan tool. There is a TSB #NTB00-019 for immobilizer system problems and updated components, but would need the factory scan tool to reprogram it either way. Potential Causes: Malfunctioning Immobilizer System Incorrect Key

1998 – 1999 Toyota Camry & Toyota Solara inoperative Vapor Pressure Sensor 3 way Vacuum Switching Valve (VSV)

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Filed Under (Toyota) by admin on 26-06-2010

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Introduction Under certain driving conditions, some 1998 – 1999 model year Camry and Solara vehicles may exhibit a M.I.L. “ON” with DTCs P0440, P0441 and P0446 stored due to an inoperative Vapor Pressure Sensor 3 way Vacuum Switching Valve (VSV). An improved Vapor Pressure Sensor VSV has been developed to correct this condition. S 1998 – 1999 model year Camry & Solara vehicles. Applicable Vehicles Parts PREVIOUS PART NUMBER CURRENT PART NUMBER PART NAME QTY Information 90910–12109 90910–12271 Vapor Pressure Sensor VSV 1

1999-2002 Chevrolet Malibu Turn Signal/ Hazard Warning Flashers inoperative

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Filed Under (Chevrolet) by admin on 25-01-2011

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Condition Some customers of 1999-2002 Chevrolet Malibu, Oldsmobile Alero, Pontiac Grand Am, and 1999 Oldsmobile Cutlass may have turn signal/hazard flashers that become inoperative.Service Procedure The following procedure provides instructions for replacing the hazard warning switch located in the instrument panel (I/P). For additional information, refer to the Lighting subsection in the Body and Accessories section of the appropriate Service Manual or SI. Malibu 1. Remove the cover from the left side instrument panel (I/P) wiring harness junction block access panel. 2. Remove the AIR BAG fuse from the panel. 3. Remove the three screws attaching the lower steering column cover to the steering column. 4. Remove the upper steering column cover. 5. Remove the two screws that attach the IP cluster bezel to the IP. 6. Using a small flat-blade screwdriver, gently pry out and remove the IP cluster trim plate from the IP. 7. Disconnect the electrical connectors from the other switches in the trim plate. 8. Disconnect the electrical connector from the hazard warning switch. 9. Using a small flat-blade screwdriver, carefully push in on the tabs to release the hazard warning switch from the IP cluster trim plate. 10. Remove the hazard warning switch by pushing in an outward motion on the switch while holding onto the IP cluster trim plate. 11. Install the new hazard warning switch by pushing in an inward motion on the switch while holding onto the IP cluster trim plate. Push inward on the switch until it is fully seated into the IP cluster trim plate. 12. Connect the electrical connector to the hazard warning switch. 13. Connect the electrical connectors to the other switches in the trim plate. 14. Position and align the IP cluster trim plate to the IP and carefully press into place.