Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
6th Edition
ISBN: 9780135257272
Author: James D. Halderman
Publisher: PEARSON
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Chapter 27, Problem 1CQ
To determine
Find how a thermostat can fail from the given list.
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Chapter 27 Solutions
Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
Ch. 27 - How can a thermostat fail?Ch. 27 - How can a water pump fail, requiring replacement?Ch. 27 - Prob. 3RQCh. 27 - Why must timing belts be replaced?Ch. 27 - Why is it important that the READY light be out on...Ch. 27 - Prob. 1CQCh. 27 - Coolant drained from the cooling system when...Ch. 27 - A water pump can fail to provide the proper amount...Ch. 27 - A defective thermostat can cause the powertrain...Ch. 27 - Intake manifold gaskets on a V-type engine can...
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- when must a thermostat be fully opened?arrow_forwardIf the thermostat contacts are closed the compressor and the condenser fan motor are not operating, and all the other loads are operating properly, which might be the problem? A. A bad high pressure safety switch. B. A bad low pressure switch C. Both A. and B. D. A bad thermostatarrow_forwardWhen replacing a thermostat, all these statements are true EXCEPT: Select one: a. Clean the mating surfaces b. Inspect the bypass port for corrosion c. Replace old gaskets with an O-ring d. Tighten the bolts to the specified torquearrow_forward
- An overheating vehicle is being discussed. Technician A states that the thermostat is open until the engine fully warms up. Technician B states that the vehicle may be overheating because the thermostat is stuck closed. Who is correct? Select one: a. Technician A only b. Technician B only c. Both Technicians A and B d. Neither Technician A nor Barrow_forwardWhy is a low-voltage thermostat normally more accurate than a high-voltage thermostat?arrow_forwardWhy is a low-voltage thermostat normally more accuratethan a high-voltage thermostat?arrow_forward
- Why does a system need to be maintained?arrow_forwardLockout may involve: Opening a disconnect switch. b. Closing a valve. Placing a block in the equipment. d. All of the above. a. C.arrow_forwardA fixed rating pressure switch is adjusted inside the pressure control and display console to record the pressure. True or falsearrow_forward
- to run d. both a and b 44. Ifa thermostatic expansion valve's thermal bulb came loose from the suction line at the outlet of the evaporator, whích of the following could result? The bulb pressure would increase and the c. thermostatic expansion valve would open. b. The superheat in the evaporator would decrease. a. Liquid refrigerant would flow back to the compressor. d. All of the above are correct. 45. If the thermal bulb assembly develops a leak, what will occur? All of the system's refrigerant will leak a. The valve will open to allow more c. refrigerant to flow. d. It will have no effect on system operation. out. b. The bulb pressure will reduce and the valve will close. 46. The purpose of an externally equalized thermostatic expansion valve is to compensate for excessive evaporator pressure drop b. allow system to equalize faster a. prevent the expansion valve from frosting up d. c. allow refrigerant to expand in the compressor 47. The primary function of an expansion device is…arrow_forwardb.has air-conditioning and is an automatic.c.has air-conditioning or is an automatic.d.has air-conditioning given that it is an automatic.e.is an automatic if it has air-conditioning.arrow_forwardQuestion 1 of 20: Select the best answer for the question. 1. In a carbon-pile voltage regulator, the resistance of the carbon stack O A. varies according to temperature, not pressure. O B. increases as increased pressure is applied. OC. is constant. OD. decreases as increased pressure is applied.arrow_forward
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