2004 Jeep Grand Cherokee Limited BODY & ACCESSORIES Speed Control

Download 1. Disconnect vacuum hose at speed control servo and install a vacuum gauge into the disconnected hose. 2. Start engine and observe gauge at idle. Vacuum gauge should read at least ten inches of mercury. 3. If vacuum is less than ten inches of mercury, determine source of leak. Check vacuum line to engine for leaks. Also check actual engine intake manifold vacuum. If manifold vacuum does not meet this requirement, check for poor engine performance and repair as necessary. 4. If vacuum line to engine is not leaking, check for leak at vacuum reservoir. To locate and gain access to reservoir, refer to Vacuum Reservoir REMOVAL / INSTALLATION . Disconnect vacuum line at reservoir and connect a hand-operated vacuum pump to reservoir fitting. Apply vacuum. Reservoir vacuum should not bleed off. If vacuum is being lost, replace reservoir. 5. Verify operation of one-way check valve and check it for leaks.… Read More

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

2005 Chevrolet Malibu Service and Repair

Download Vacuum Brake Booster Check Valve and/or Hose Replacement Removal Procedure 1. Disconnect the brake booster vacuum check valve (1) from the brake booster. 2. If the vacuum check valve (1) needs to be separated from the vacuum hose (3), release and reposition the clamp (2) on the vacuum hose (3) and remove the check valve (1) from the hose (3). 3. If replacing the vacuum check valve (1), remove the grommet (4) from the brake booster and discard the grommet. 4. If removing the vacuum hose (2), take note of the vacuum hose routing then disconnect from the engine intake manifold connection (3) by releasing tension on the vacuum hose clamp (1) and sliding the vacuum hose (2) off the intake manifold connection (3). Installation Procedure Important: A small amount of denatured alcohol can be used as an assembly aid when installing the vacuum check valve and/or grommet. Do NOT use soap.… Read More

1984-1995 Honda Civic/CRX Positive Crankcase Ventilation (PCV) System

Download SERVICE Positive Crankcase Ventilation (PCV) Valve For PCV valve removal, refer to Routine Maintenance of this information. 1. Locate the PCV valve. With the engine running at idle, use pliers to pinch the PCV hose between the valve and the intake manifold. It should be possible to hear the spring loaded valve click shut. 2. If no click is heard, remove the valve from the engine but leave it connected to the intake manifold. A hissing sound should be heard and vacuum should be felt at the valve inlet. 3. If no vacuum is felt, remove the valve from the intake manifold hose. The engine should stall or almost stall. This will indicate a stuck valve or clogged hose. Check the breather hose for clogging or leaks and replace any defective parts. Exhaust Gas Recirculation (EGR) System FUEL INJECTED ENGINES General Information See Figure 3 The Exhaust Gas Recirculation (EGR) system is used to control emissions measured at the tailpipe.… Read More

2002 Mercury Sable Upper Intake Manifold

Download 1. Remove the air cleaner outlet tube. 2. Remove the pin-type retainers and the accelerator cable splash shield. 3. Disconnect the throttle cable and the cruise control cable. 4. Disconnect the Throttle Position Sensor (TPS) and Idle Air Control (IAC) valve electrical connectors. 5. Disconnect the harness Tom the throttle body stud. 6. Disconnect the Exhaust Gas Recirculation (EGR) vacuum regulator and vacuum supply hoses. 7. Disconnect the Positive Crankcase Ventilation (PCV) and Evaporative Emissions (EVAP) vacuum hoses. 8. Remove the EGR valve. 1 Disconnect the vacuum hose. 2 Remove the nuts. 3 Remove the bolts. 4 Remove the EGR valve. 9. Remove the EGR Vacuum Regulator (EVR) valve. 1 Disconnect the vacuum hose. 2 Disconnect the electrical connector. 3 Remove the bolts. 4 Remove the valve. 10. Remove the eight bolts and the upper intake manifold. * Remove and discard the gaskets. * Clean all mating surfaces. Installation 1.… 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

2000 Honda Accord EX Coupe Repair Instructions

Download Applies To: 1998-00 Accord L4 – See VEHICLES AFFECTED MIL Comes On With DTCs P0171 and/or P0172 (Supersedes 00-018, dated March 14, 2000) SYMPTOM The MIL (Malfunction Indicator Lamp) comes on with DTCs P0171 (Fuel System Too Lean) and/or P0172 (Fuel System Too Rich) stored in the ECM/PCM . PROBABLE CAUSE Moisture in the fuel pressure regulator. VEHICLES AFFECTED 1998-99 2-door: ALL 1998-99 4-door: ALL 2000 2-door:From VIN 1HGCG3. . .YA000001 thru YA000919 2000 4-door:From VIN 1HGCG6. . .YA000001 thru YA002332 From VIN 1HGCG5. . .YA000001 thru YA012613 From VIN JHMCG5. . .YC000001 thru YC000015 VIN JHMCG6. . .YC000001 CORRECTIVE ACTION Replace the fuel pressure regulator, and reroute the fuel pressure regulator vacuum line. PARTS INFORMATION Fuel Pressure Regulator (All):P/N 16740-PAA-A01, H/C 5429048 Fuel Pressure Regulator Tube Kit A (M/T with cruise control):P/N 06168-PAA-A10, H/C 6383186 Fuel Pressure Regulator Tube Kit B (A/T with cruise control):P/N 06168-PAA-A60, H/C 6383160 Fuel Pressure Regulator Tube Kit C (M/T without cruise control):P/N 06168-PAB- A00, H/C 6383194 Fuel Pressure Regulator Tube Kit D (A/T without cruise control):P/N 06168-PAB- A50, H/C 6383178 REPAIR PROCEDURE 1.… Read More

2003 BMW 325I Sport Wagon Check engine light on and fault codes stored

Download 2002 BMW 325I 2.5L 2003 BMW 325I Sport Wagon 2.5L, Eng Des M54, USA Customer Concern: Check engine light on and fault codes stored. Vehicle running normally. Tests/Procedures: 1. Based upon stored fault codes for secondary air system, there is little or no flow of secondary air into engine. Typical causes for this issue are failed secondary air pumps and/or secondary air check valves. Secondary air pump should operate under normal circumstances when vehicle is first started to perform system test. Pump will normally be heard running when standing in front right corner of vehicle. 2. The secondary air pump is located in the right front of engine compartment. A secondary air pump relay located in the glove box is controlled by the engine control module and sends power to the secondary air pump. 3. Air pump can be disconnected and supplied with power and ground at pump to verify operation is possible.… Read More

2008-2010 F-Super Duty 6.4L DIESEL ENGINES REPEAT RADIATOR LEAK

Download FORD: 2008-2010 F-Super Duty This article supersedes TSB 10-4-5 to update the a. With EOT at 195 °F (91 °C) drive on the Dealer Coding base part numbers. highway unloaded at 55-70 MPH (89-113 Km/h) constant speed to observe EOT and ISSUE ECT temp. Some 2008-2010 F-Super Duty vehicles built on or b. Test results/next steps: before 9/14/2009 and equipped with a 6.4L diesel engine may exhibit repeat radiator leaks due to (1) If EOT is less than 8 °F (4.4 °C) malfunctioning (hyper-extended) high temperature higher than ECT, and the coolant temp thermostats. fluctuates roughly 5 °F (2.7 °C) – the thermostats are okay and do not need ACTION to be replaced. Replace just the Follow the Service Procedure steps to correct the radiator. Refer to WSM, Section 303-03 condition. (Engine Cooling). SERVICE PROCEDURE (2) If EOT exceeds ECT by greater than 8 °F (4.4 °C) or if the ECT readings 1.… Read More

Engine Oil Leak On 1989-1991 Honda 1.5 & 1.6L Engines Repair Instructions

Download The AERATechnical Committee offers the following information regarding an engine oil leak on 1989-91 Honda 1.5 & 1.6Lengines. Some vehicles that were produced during the mentioned years may have an oil leak around the spark plug well. The spark plug area of the camshaft holder casting could be porous and may leak. If normal diagnosis and repairs do not fix the above-mentioned concern, installation of a new cam holder kit, Part #041 01-PM3-308, H/C: 3046497, will be required. To properly install the new kit, removal of the spark plugs and valve cover need to be done. Upon removal of the valve cover, inspect valve cover rubber seals. If any signs of damage have occurred, replace rubber seals as needed. Turn the engine to TDC, remove the timing belt adjuster and remove the timing belt and rocker arm assembly. Check clearance between the new camshaft holders and the camshaft by coating the new cam holder with oil and installing them without the rocker arms and shafts.… Read More