Auto Repair Manual Free Download and ReviewsFree download ebook pdf files automotive manual

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WARNING: Begin fuel system trouble shooting and diagnosis with fuel system pressure test. Relieve fuel system pressure before disconnecting any components or installing fuel pressure gauge. TBI 1. Turn ignition off for 10 seconds. Turn ignition on, and listen at fuel tank for fuel pump operation. Pump should run 2 seconds (20 seconds on models with fuel module). If fuel pump runs, go to next step. If fuel pump does not run, go to step 7). 2. If fuel pump runs, turn ignition off. Verify fuel tank has fuel. Relieve fuel pressure. See FUEL SYSTEM PRESSURE RELIEF . Remove air cleaner, and plug air cleaner vacuum ports (if equipped). Disconnect fuel line between throttle body and fuel filter. Install Fuel Pressure Gauge (J-29658A) and Adapter (J- 2968A-85) between steel fuel line and flexible hose, ahead of in-line fuel filter. 3. Turn ignition on, and note reading on pressure gauge. If fuel pressure is 9-13 psi (.63-.91 kg/cm2 ), no problems exist. If pressure is less than 9 psi (.63 kg/cm2 ), go to step 5). If pressure is greater than 13 psi (.91 kg/cm2 ), turn ignition off, and bleed fuel pressure. Disconnect fuel return line downstream of pressure gauge. Insert return line into a gasoline container. 4. Turn ignition on. If pressure is now 9-13 psi (.63-.91 kg/cm2 ), correct restriction in fuel return line between disconnected point and fuel tank. If fuel pressure is greater than 13 psi (.91 kg/cm2 ), check for restricted return line (including fuel filter) downstream of pressure gauge. If no restrictions are present, replace fuel pressure regulator (TBI 700) or fuel meter cover/pressure regulator (TBI 220). 5. Check for restricted line between in-tank fuel pump and pressure regulator. If fuel line is okay, disconnect injector connector. Turn ignition on. Gradually pinch fuel pressure gauge outlet hose. Note pressure. CAUTION: DO NOT pinch off fuel return line completely. DO NOT allow fuel pressure build-up to exceed specification, as damage to fuel pressure regulator may occur. 6. If pressure is greater than 13 psi (.91 kg/cm2 ), replace fuel pressure regulator (TBI 700) or fuel meter cover/pressure regulator (TBI 220). If pressure is less than 9 psi (.63 kg/cm2 ), check for faulty fuel pump or incorrect part. Check fuel pump coupling hose and pump inlet filter in fuel tank. On models with dual fuel tanks, check for faulty fuel tank selector valve and meter switch.

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TROUBLE SHOOTING FUEL/TEMPERATURE GAUGE NOT WORKING Check for blown fuse, faulty voltage limiter and faulty relay. Ensure sending unit connections are clean and tight. Test sending unit for correct operation. Tighten connections in instrument cluster. SPEEDOMETER NOT WORKING Ensure speedometer cable is properly connected and correctly routed. If speedometer pointer and/or odometer still do not work, replace speedometer as an assembly. TACHOMETER NOT WORKING Tachometer is serviced as an assembly. If wiring harness is okay, replace tachometer assembly. WARNING LIGHTS NOT WORKING Test for defective sending unit, burned-out bulb and broken printed circuit. Ensure all connections are clean and tight. TESTING BOOST PRESSURE GAUGE NOTE: Boost pressure gauge testing procedures for Galant are not available from manufacturer.

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CONDITION POSSIBLE CAUSE CORRECTION Very High Frequency Excessive distance between Shim starter motor toward Flywheel/Drive Whine Before Engine pinion gear and Flywheel/Drive Plate. Starts; Engine Starts OK. Plate gear. Very High Frequency Insufficient distance between Shim starter motor away from Whine After Engine Starts starter motor pinion gear and Flywheel/Drive Plate. Inspect With Ignition Key Flywheel/ Drive Plate runout Flywheel/Drive Plate for damage; bent, Released. Engine Starts can cause noise to be unusual wear, and excessive runout. OK. intermittent. Replace Flywheel/Drive Plate as necessary. A Loud “Whoop” After Probable cause is defective Replace starter motor. Engine Starts While Starter overrunning clutch. Motor is Engaged “Rumble”, “Growl”, or Probable cause is bent or Replace starter motor. “Knock” as Starter Motor unbalanced starter motor Coasts to Stop After armature. Engine Starts.

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AUTOMATIC TRANSMISSIONS Mercedes-Benz 722 Series – Electronic Diagnosis C220, C280, C36, E300D, E320 E420, S320, S350D, S500, S600 SL320, SL500, SL600 Incorrect modulating pressure. Modulating pressure control valve or pressure relief valve is dirty or sticking. Vacuum line to transmission vacuum capsule clogged or leaking. Working pressure control valve dirty or sticking. Low working pressure. Defective primary pump. Transmission Slips When Starting Off In 1st Or 2nd (Reverse Is Okay) Band B-2 shift valve sticking. Band B-2 piston worn or damaged. Band B-2 adjusted incorrectly or worn or damaged. Adjust brake band B-2 by installing a longer thrust pin (if necessary). If transmission operates properly with selector lever in “2″, but not in “3″ or “D” position, one-way clutch may be slipping

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1990-91 ELECTRICAL Alternators & Regulators – Hitachi 1990 Axxess, Pulsar NX 1991 Maxima, NX, Pathfinder, Pickup, Sentra, Stanza, 240SX & 300ZX NOTE: Some models are available with Mitsubishi alternators. See appropriate ALTERNATOR & REGULATOR – MITSUBISHI article. DESCRIPTION Hitachi alternators are conventional 3-phase, self-rectifying alternators. See Fig. 3. Three positive and 3 negative diodes are used to rectify current. All models are equipped with Integrated Circuit (IC) voltage regulators. A diode on the charge indicator light circuit monitors alternating voltage at the stator. Charge indicator light remains off when monitored voltage and charging voltage are equal. TROUBLE SHOOTING CHARGING SYSTEM