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3-6 Chapter 3 Cooling, heating and air conditioning system 7.21 Install a new 0-ring on the water inlet pipe (arrow) pipe (see illustration). Wet the 0-ring with 22 Install a new gasket on the water pump pipe. Press the water pipe into the pump 23 Install the water pump mounting bolts The remainder of installation is the reverse of removal. Refill the cooling system (see Chapter 1) and operate the engine to check for leaks. 8 Coolant temperature sending Warning: Wait until the engine is completely Check 1 The coolant temperature indicator sys- tem is composed of a light or temperature If an overheating indication occurs, check the coolant level in the system and then make sure the wiring between the light or gauge and the sending unit is secure and 3 When the ignition switch is turned on and the starter motor is turning, the indicator engine indication). If the light is not on, the bulb may be burned out, the ignition switch may be faulty or the circuit may be open. As soon as the engine starts, the light should go out and remain out unless the out may be due to a grounded wire between the light and the sending unit, a defective sending unit or a faulty ignition switch. See Plain water may have too low a boiling point Replacement Warning: Wait until the engine is completely Disconnect the electrical connector from the sensor. Wrap the threads of the new sensor with Teflon tape to prevent leaks. Unscrew the sensor. Be prepared for some coolant spillage (read the Warning in Install the sensor and tighten it securely. 10 Connect the electrical connector. 11 Check the coolant level after the replacement unit has been installed and top 9 Blower motor and circuit - check Warning: These models are equipped with to avoid the possibility of accidental deploy- ment of the airbag, which could cause per- Check Refer to illustrations 9.3 and 9.7 1 Check the fuse and all connections in the circuit for looseness and corrosion. Make Remove the lower right dash insulator panel (below the glove box) for access to the blower motor. Note: When reinstalling this Using suitable probes, backprobe the blower motor electrical connector at the With the transmission in Park, the park- ing brake securely set, turn the ignition Move the blower switch through each of its positions and note the voltage readings. If there is voltage present, but the blower motor does not operate, the blower source of battery voltage. If the blower does- If voltage was not present at the blower motor at all speeds, and the motor itself tinuity across each of the resistor terminals (see illustration). If an open circuit is indi- the blower switch, refer to Section 11, remove the control panel assembly and each position. Refer to the wiring diagrams at rect terminals for testing. Replacement Refer to illustration 9.11 Disconnect the battery negative cable from the ground stud on the left shock tower Detach the panel underneath the right 9.3 Using suitable probes, backprobe the blower harness plug (twisted pair of wires) at the blower motor resistor block - connect a voltmeter to the dark blue wire (+) and black wire (-), voltage should vary as the blower switch is moved through each position 9.7 To test the blower resistor, check for continuity at each of the resistor terminals |