DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected

Download DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected Refer to Engine Controls Routing Diagram, EVAP Control System Overview . System Description This DTC tests the evaporative emission (EVAP) system for a small leak. The control module monitors the fuel tank pressure (FTP) sensor signal to determine the vacuum decay rate. At an appropriate time, the control module turns the EVAP canister purge valve ON and the EVAP vent valve ON. This allows the engine to draw a vacuum on the EVAP system. At a calibrated time, or vacuum level, the control module turns the EVAP canister purge valve OFF, sealing the system, and monitors the FTP sensor input in order to determine the EVAP system vacuum decay. If the control module detects a leak larger than a calibrated amount, this DTC sets. The following table illustrates the relationship between the ON and OFF states, and the Open or Closed states of the EVAP canister purge and vent valves.… Read More

Test Guidelines for Use of Essential Tool J 41413-200 Evaporative System Tester

Download Models: 2002 and Prior Passenger Cars and Light Duty Trucks with Non-Enhanced and Enhanced EVAP Systems. Non-Enhanced EVAP System Diagnostic Procedure 1. Pinch off or plug the EVAP vapor line to seal the EVAP system. 2. Connect the EEST red battery clip to the positive (+) battery terminal. Connect the black battery clip to chassis ground. 3. Install the appropriate fuel fill cap adapter to the fuel fill pipe. Refer to the Service Information for the appropriate fuel fill cap adapter part number. 4. Connect the EEST’s nitrogen/smoke supply hose and vehicle fuel fill cap to the adapter. 5. Turn the nitrogen/smoke valve on the EEST control panel to SMOKE. 6. Use the remote switch to introduce smoke into the EVAP system for 60 seconds. Important: Additional smoke may need to be introduced at 15-second intervals until the leak source has been located. 7. Inspect the entire EVAP system for exiting smoke using the high intensity white light (J 41413-SPT).… Read More

Evaporative Emission (EVAP) Vent Valve Replacement

Download 1. Turn OFF the ignition. 2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. 3. Disconnect the electrical connector. 4. Remove the EVAP vent valve bracket bolt. 5. Remove the EVAP vent valve from the bracket. 6. Disconnect the vent hose from the EVAP vent valve. 7. Remove the EVAP vent valve. Installation Procedure 1. Install the EVAP vent valve on bracket. 2. Connect the vent hose. Canister vent hose should be routed below the fuel tank fill and vent hoses. Notice Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener.… Read More

2004 Chevrolet Chevy K Silverado Evaporative Emission (EVAP) Canister Vent Solenoid Valve Replacement Pickup

Download Removal Procedure Important Clean the evaporative emission (EVAP) connections and surrounding areas prior to disconnecting the fittings in order to avoid possible system contamination. 1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information. 2. Remove the harness clip from the canister vent solenoid (CVS) line. 3. Disconnect the CVS electrical connector. 4. If the vehicle is equipped with a 6 ft box, disconnect the EVAP CVS line from the canister. 5. Remove the CVS clip from the frame crossmember. 6. Push in the retainer and remove the CVS from the fuel tank clip. 7. If the vehicle is equipped with a 8 ft box, disconnect the EVAP CVS line from the canister. 8. Remove the CVS clip from the frame crossmember. 9. Push in the retainer and remove the CVS from the fuel tank clip. Installation Procedure 1. If the vehicle is equipped with a 8 ft box, install the CVS to the fuel tank until the clip engages.… Read More

Vent Valve Solenoid Assembly and Add/Relocate Filter Box Using Service Kit

Download DTC P0446 (Restricted/Blocked EVAP Vent Path) Set, Check Engine Light On (Replace Evaporative Emission (EVAP) Vent Valve Solenoid Assembly and Add/Relocate Filter Box Using Service Kit) Models: 1999-2007 Chevrolet Silverado (Classic) Models 1999-2007 GMC Sierra (Classic) Models 2007-2009 Chevrolet Silverado Models (Excluding Hybrid) 2007-2009 GMC Sierra Models (Excluding Hybrid) This bulletin is being revised to provide an updated picture of the remote filter box and to add an important statement to not replace the EVAP canister. Please discard Corporate Bulletin Number 02-06-04-037E (Section 06 — Engine/Propulsion System). Condition Some customers whose vehicles are operated in dusty type environments, such as farming or mining off*road type applications, may comment about the illumination of the check engine light, with a DTC of P0446 (Restricted/Blocked EVAP Vent Path) being set. Cause Dirt and dust intrusion into the EVAP canister vent hose assembly, resulting in restricted air flow, may cause this condition. Correction (1999-2007 Classic/Old Style Models) After following the published SI diagnostics for P0446 and determining that the EVAP canister vent valve is the cause of the MIL light, replace the existing EVAP canister vent valve assembly with a new assembly.… Read More

1997-2001 Acura Integra Type-R Racing Intake Manifold

Download Part # 307-05-0290 Racing Intake Manifold for • 1999-2000 Honda Civic Si • 1997-2001 Acura Integra Type-R • 1992-1993 Acura Integra GSR • 1994-1997 Honda Del Sol DOHC VTEC. Removal 1. Relieve fuel pressure by loosening banjo bolt on top of fuel fi lter. Disconnect the fuel line at fuel rail. It is recommended that the washers be replaced. Next, disconnect the fuel injector harness holder and unbolt. Disconnect hoses from fuel pressure regulator (FPR). 2. Disconnect intake tubing/pipe from throttle body. Next, disconnect all hoses leading to intake manifold and throttle body, including throttle cable bracket on manifold. On throttle body, disconnect throttle positions sensor (TPS) and map sensor. 3. Unbolt manifold bracket from engine block and intake manifold. This bracket will not be used in assembly and installation. Remove intake manifold, throttle body, and fuel rail as one unit. Inspect intake manifold gasket. Replace as needed. Make sure to note all disconnect hoses and sensors.… Read More

1994-2001 Acura Integra Racing Intake Manifold

Download 1. Relieve fuel pressure by loosening banjo bolt on top of fuel fi lter. Disconnect the fuel line at fuel rail. It is recommended that the washers be replaced. Next, disconnect the fuel injector harness holder and unbolt. Disconnect hoses from fuel pressure regulator (FPR). 2. Disconnect intake tubing/pipe from throttle body. Next, disconnect all hoses leading to intake manifold and throttle body, including throttle cable bracket on manifold. On throttle body, disconnect throttle positions sensor (TPS) and map sensor. 3. Unbolt (2) lower intake manifold bolts that secure the manifold to the engine block. This bracket will still be used to accommodate the heater bypass pipe. Next, unbolt the manifold from the cylinder head. Remove the intake manifold, throttle body, and fuel rail as one unit. Inspect intake manifold gasket. Replace as needed. Make sure to note all disconnect hoses and sensors. 4. Remove the intake air bypass (IAB) vacuum tank, check valve, and control solenoid valve.… Read More

1999-2003 FORD SUPER DUTY F SERIES HIGH PRESSURE OIL PUMP LEAK

Download FORD: 1998-2003 E SERIES 1999-2003 SUPER DUTY F SERIES 2000-2003 EXCURSION, F-650, F-750 This article supersedes TSB 03-21-50 to update the WARNING service procedure and illustration. DO NOT REMOVE OR ATTEMPT TO REPAIR A LEAK AT THE PLUG PICTURED IN LOWER LEFT ISSUE CORNER OF FIGURE 1, OR DAMAGE TO THE Some 1998-2003 E-Series, 1999-2003 Super Duty, PUMP WILL RESULT. 2000-2003 Excursion, and 2000-2003 F650/750 1998-2003 E-SERIES HIGH PRESSURE OIL vehicles equipped with a 7.3L Diesel engine may PUMP ACCESS PROCEDURE (DISASSEMBLY) exhibit an oil leak at the high pressure oil pump outlet fittings and/or end plug (see Figure 1). The 1. Remove the Intake Air Resonator. For leak may appear to be a rear main crankshaft seal, additional information, refer to Section 303-12 in oil pan gasket, or other engine oil leak due to the the appropriate Workshop Manual. drain hole machined in the crankcase valley which allows any oil in the valley to run down the back of 2.… Read More

1996 Ford Truck E 350 Van Exhaust Manifold – Exhaust Leaks

Download 1996 Ford Truck E 350 Van V8-460 7.5L Exhaust Manifold – Exhaust Leaks. EXHAUST – EXHAUST LEAK AT EXHAUST MANIFOLDS – VEHICLES EQUIPPED WITH 7.0L OR 7.5L ENGINE LIGHT TRUCK: 1993-96 E-35O 1993-97 F SUPER DUTY, F-250 HD, F-350 MEDIUM/HEAVY TRUCK: 1992-97 F-700, F-800 This TSB article is being republished in its entirety to correct the Labor Operation Times listed. ISSUE An exhaust leak at the exhaust manifolds may be evident on some vehicles. This may be due to heat causing a reduction in bolt torque on the exhaust manifolds. ACTION Install new exhaust manifold bolts. Refer to the following Service Procedure and Part Application Chart for details. SERVICE PROCEDURE NOTE IF THE MANIFOLD IS TO BE RESURFACED, THE BOLTS MUST BE SHORTENED TO ACCOMMODATE THE EXHAUST MANIFOLD . THE BOLTS SHOULD HAVE THE LEADING “DOG POINT” REMOVED TO PREVENT BOTTOMING INTO THE HOLE. NOTE THERE SHOULD NOT BE ANY TYPE OF GASKET USED BETWEEN THE EXHAUST MANIFOLD AND THE CYLINDER HEAD.… Read More

1998 Buick Park Avenue Engine Coolant Consumption or Coolant Leak

Download Engine Coolant Consumption or Coolant Leak (Inspect For Material Degradation/Replace Intake Manifolds) Models: 1995-1997 Buick Riviera 1995-1999 Buick LeSabre, Park Avenue 1996-1999 Buick Regal 1998-1999 Chevrolet Lumina, Monte Carlo 1995-1996 Oldsmobile Ninety-Eight 1995-1999 Oldsmobile Eighty-Eight 1998-1999 Oldsmobile Intrigue 1995-1999 Pontiac Bonneville 1997-1999 Pontiac Grand Prix with 3.8L Engine (VIN K — RPO L36) Condition Some customers may comment on excessive engine coolant consumption, or an engine coolant leak near or under the throttle body area of the upper intake manifold. Cause Upper intake manifold composite material may degrade around the EGR stove pipe and could result in an internal or external coolant leak. Correction 1. Follow the upper intake manifold removal instructions found in the Engine Unit Repair Section of the Service Information Manual. 2. Refer to the arrow in the illustration of the upper intake manifold above. Inspect the inner diameter of the EGR passage for signs of material degradation.… Read More