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

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Disconnect battery. Disconnect harness multi-plug from engine coolant temperature (ECT) sensor Fig.1 [2] . Disconnect harness multi-plug from mass air flow (MAF) sensor Fig.1 [4] . Remove protective cover Fig.1 [1] . Remove plastic tube from wiring harness Fig.1 [3] . Remove insulation tape from wiring harness. Cut engine coolant temperature (ECT) sensor wiring and remove from cable ducting. Cut new engine coolant temperature (ECT) sensor wiring a minimum of 120 mm long. Fit new wiring harness multi-plug to wires Fig.2. Repair wiring with repair kit listed. Seal with insulation tape Fig.3. Remove engine coolant temperature (ECT) sensor. Fit modified engine coolant temperature (ECT) sensor. Tightening torque: 18 Nm. Refit wiring harness multi-plug. Reconnect battery. Erase fault memory.

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Both cylinder heads 1. With the vehicle in NEUTRAL, position it on a hoist. For additional information , refer to Section 100-02. 2. Relieve the fuel system pressure. For additional information, refer to Section 310-00. 3. Drain the cooling system. For additional information, refer to Section 303-03. 4. Remove the intake manifold. For additional information, refer to Intake Manifold in this section. 5. Remove the cooling fan shroud. For additional information, refer to Section 303-03. 6. Remove the accessory drive belt. For additional information, refer to Section 303-05. 7. Remove the LH valve cover. For additional information, refer to Valve Cover — LH in this section. 8. Remove the RH valve cover. For additional information, refer to Valve Cover — RH in this section. 9. Disconnect the generator electrical connections. 10. Remove the accessory drive belt tensioner. 11. Remove the bolts and the generator and generator mounting bracket as an assembly. 12. Disconnect the crankshaft position (CKP) sensor electrical connector. 13. Disconnect the wiring harness retainers. 14. Disconnect the water temperature indicator sender unit and the engine coolant temperature (ECT) sensor electrical connectors. 15. Disconnect the exhaust gas recirculation (EGR) tube fitting.

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HVAC Module Self-Test The HVAC module self-test will not detect concerns associated with data link messages like engine coolant temperature or vehicle speed signals. A scan tool must be used to retrieve these concerns. The HVAC module self-test will detect concerns in the system control functions and will display hard DTCs. Hard DTCs identify faults which are present during the self-test. The vehicle interior/ambient temperature should be between 4-32° (40-90°F) when carrying out the self-tes t. If the temperatures are not within the specified ranges, false temperature C sensor DTCs will be displayed. The self-test can be initiated at any time. Normal operation of the system stops when the self-test is activated. To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the AUTO button within 2 seconds. The display will show the fan speed indicator illuminating from low to high. The test may run as long as 30 seconds. Record all DTCs displayed. If any DTCs appear during the self-test, follow the diagnostics procedure given under ACTION for each DTC given. If a condition exists but no DTCs appear during the self-test, GO to Symptom Chart – Climate Control Systems. To exit the self-test and clear all DTCs, press the front DEFROST button. The HVAC control assembly will then turn OFF (display blank) and all DTCs will be cleared. Always exit the self-test before powering the system down (system turned OFF). If a condition exists, but no on-demand DTCs appear during the self-test, carry out the HVAC Module Retrieve Continuous DTCs self test. HVAC Module — Retrieve Continuous DTCs This function will display continuous (intermittent) codes and hard faults that occur during normal operation. To display continuous codes, press the OFF and FLOOR buttons simultaneously and then release and within 2 seconds press the RECIRC button. To exit the display of continuous codes, press the front DEFROST button. This will exit and clear all DTCs. Press any button except DEFROST to exit without clearing DTCs set before the last ignition cycle. Always exit continuous codes display before powering the system down (system turned off). Continuous DTCs are saved only after an ignition cycle. Continuous DTCs will be deleted after 80 ignition switch ON cycles after the intermittent condition occurs.

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SUBJECT: Engine Coolant Temperature Sensor Related Diagnostic Trouble Code(s) and/or the Following Conditions: Hard Start, Erratic Idle, Rough Running. Engine Overheating, Low and/or Leaking Coolant, and/or Service Engine Soon Lamp Illuminated. (Replace Engine Coolant Temperature Sensor with New Design Sensor- P/N 21025106) MODELS AFFECTED: 1991-2001 Saturn S-Series vehicles CONDITION: Customers may comment about various driveability and/or engine operating concerns including: hard start, erratic idle, rough running, engine overheating, low and/or leaking coolant, and/or Service Engine Soon lamp illuminated. CAUSE: This condition may be caused by a cracked engine coolant temperature sensor. CORRECTION: Replace engine coolant temperature sensor, inspect and if necessary replace sensor harness connector. Refer to procedure in this bulletin to replace engine coolant temperature sensor and Parts Requirements for specific parts information. PROCEDURE 1. Disconnect engine coolant temperature sensor electrical connector and inspect sensor and connector terminals for corrosion and/or evidence of engine coolant. ^ If terminals are corroded or if there is evidence of engine coolant proceed to step 4. ^ If terminals are not corroded and there is no evidence of engine coolant, reconnect the electrical connector and continue to next step.

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P1128 DESCRIPTION The air/fuel control system, in addition to a number of sensors, includes the following components and systems: – Intake air system. – Exhaust system. – Evaporative emissions control system (includes purge control solenoid valve). – Fuel injectors. – Fuel pressure regulator. – Fuel pump. For the air/fuel ratio to be within limits, all of the sensors, components and systems associated with the air/fuel control system must function within normal parameters. FAILURE CONDITIONS (FOR LONG-TERM FUEL TRIM) The ECM will set a code and the Malfunction Indicator Lamp (MIL) will turn on if the long-term fuel trim value goes to 10% to 15% lean for 30 seconds during two driving cycles when the following conditions are met: 1. Engine load exceeds 1.8 milliseconds. 2. Engine coolant temperature is above 158 °F (70 °C). 3. Canister purge system is not operating. 4. Mass air flow is less than or 5.5 g/s. 5. Engine speed is below 1000 RPM.