2003 s10 vacuum diagram


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2004 Jeep Grand Cherokee Limited DIAGNOSIS AND TESTING – VACUUM RESERVOIR

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Filed Under (Jeep) by admin on 18-11-2010

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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. a. Locate one-way check valve. The valve is located in vacuum line between vacuum reservoir and engine vacuum source. Disconnect vacuum hoses (lines) at each end of valve. b. Connect a hand-operated vacuum pump to reservoir end of check valve. Apply vacuum. Vacuum should not bleed off. If vacuum is being lost, replace one-way check valve. c. Connect a hand-operated vacuum pump to vacuum source end of check valve. Apply vacuum. Vacuum should flow through valve. If vacuum is not flowing, replace one-way check valve. Seal the fitting at opposite end of valve with a finger and apply vacuum. If vacuum will not hold, diaphragm within check valve has ruptured. Replace valve.

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2005 Chevrolet Malibu Vacuum Brake Booster Check Valve and/or Hose Replacement Removal Procedure

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Filed Under (Chevrolet) by admin on 19-10-2010

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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. 1. If the vacuum hose (2) was removed, install the vacuum hose into position on the vehicle as noted prior to removal, then connect the vacuum hose (2) to the engine intake manifold connection (3) and secure with the vacuum hose clamp (1). 2. If the vacuum check valve (1) is being replaced, install a NEW grommet (4) to the brake booster. 3. If the vacuum check valve (1) was separated from the vacuum hose (3), install the check valve (1) to the vacuum hose (3). Install and secure the clamp (2) into position on the hose (3). 4. Connect the brake booster vacuum check valve (1) to the brake booster.

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ENGINE MISFIRE 2003-2004 Mustang, 1999-2004 Navigator 2002-2003 Blackwood 2003-2005 Aviator 2003-2004 Marauder

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Filed Under (Ford) by admin on 11-05-2010

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Some 1999-2004 Navigator, 2002-2003 Blackwood, 2003-2005 Aviator, 2003-2004 Marauder and 2003-2004 Mustang vehicles built before 12/19/2004 equipped with 4.6L 4V/5.4 4V engine may exhibit a runs rough, lacks power, and engine misfire, prompted by a MIL light and DTC codes P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, and P0316. ACTION Diagnose engine for engine misfire concern. If diagnostics determine an engine misfire which is characterized by leakage through exhaust valve(s), only replace the affected cylinder head(s). SERVICE PROCEDURE

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1991 Volkswagen Passat Vacuum Diagrams

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Filed Under (volkswagen) by admin on 07-10-2010

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Cabriolet, Corrado, Fox, Golf GL/GTI, Jetta, Passat, Vanagon INTRODUCTION This article contains underhood views of vacuum hose routing. Use these vacuum diagrams during the visual inspection of F – BASIC TESTING article. This will assist in identifying improperly routed vacuum hoses which cause driveability and/or computer-indicated malfunctions. Fig. 1: Fox Vacuum Diagram Fig. 6: Cabriolet Canister-to-Intake Manifold Vacuum Diagram Fig. 7: Canister-to-Intake Manifold Vacuum Diagram (CIS–E Motronic System)

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2002-2003 Saturn VUE (Retorque Intake Manifold Vacuum Chamber Bolts, Install Vacuum Chamber Springs)

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Filed Under (Saturn) by admin on 04-06-2010

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Condition Some customers may comment on the (MIL) SERVICE ENGINE SOON telltale being illuminated. (DTC(s) P0171 – Fuel Trim System Lean Bank 1 and/or DTC P0174 – Fuel Trim System Lean Bank 2 may be set and stored in the ECM memory.) Cause This condition may be caused by insufficient torque on the intake manifold vacuum chamber bolts. Under deceleration, enough vacuum can be created inside the intake manifold to lift the vacuum chamber off it’s seal creating an intermittent vacuum leak. Correction Refer to the service procedure in this bulletin to retorque the intake manifold vacuum chamber bolts and install the vacuum chamber springs. Procedure: Notice: When servicing intake manifold, do not use power tools. Damage to threads or manifold may occur. 1. Loosen clamp at air cleaner assembly and throttle body assembly. 2. Remove attachment bolts from outlet resonator/duct assembly.