1986 nissan 300zx turbo vacuum diagram
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Filed Under (Jeep) by admin on 18-11-2010
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.
Filed Under (Chevrolet) by admin on 19-10-2010
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.
Filed Under (volkswagen) by admin on 07-10-2010
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)
Filed Under (Saturn) by admin on 04-06-2010
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.
Filed Under (Nissan) by admin on 04-01-2011
SERVICE PROCEDURE 1. Set the parking brake. 2. Connect C-III to the vehicle. 3. Use C-III to check for Air Bag DTCs. a. Navigate C-III to Air Bag Direct Diagnostic Mode. b. Make sure to check both SELF DIAG RESULTS and SELF-DIAG [PAST]. • SELF-DIAG [PAST] is under Special function. • If there are any DTCs stored for AIR BAG other than B1033, B1034 and/or B1035, perform repairs as needed, and then erase DTC before continuing with this procedure. • Diagnosis and repair for DTCs other than B1033, B1034, and/or B1035 is not covered by this bulletin. NOTE: All DTCs (except B1033, B1034, and B1035) must be repaired and erased before continuing with this procedure. 4. Disconnect C-III from the vehicle. 5. Start the engine and let it idle for about 5 seconds. 6. Turn the ignition OFF. 7. WARNING: Prep the vehicle for Crash Zone Sensor replacement as follows: The following are VERY IMPORTANT to prevent unexpected air bag deployment. • Remove the ignition key / Intelligent Key from the cabin of the vehicle and set aside, away from the vehicle (this will prevent accidentally turning the ignition ON). • Make sure the ignition remains OFF until after the new sensor is completely installed. • Make sure no one is in the vehicle cabin and no one enters the vehicle cabin until after the sensor is completely installed. • Wait for all control units to “power down” (at least 1 minute) before continuing. 8. Locate the Crash Zone Sensor (see Figure 2). Crash Zone Sensor Cover 9. Remove the 2 Crash Zone Sensor nuts shown in Figure 3. • Discard these nuts. They will not be reused. 10. Remove the Crash Zone Sensor Cover. 11. Disconnect the electrical connector shown in Figure 4.