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 21, Problem 7CQ
To determine
State the cause for the collapsing of upper radiator hose when the engine cools.
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A vehicle is having its water pump replaced.
When the water pump is removed, severe
corrosion is found on the water pump
impeller, and inside the engine. Technician A
states that the radiator cap may be
overpressurizing the system. Technician B
states that the vehicle may have been run
with 100% water in the cooling system for
some time. Who is correct?
Select one:
a. Technician A only
b. Technician B only
c. Both Technicians A and B
d. Neither Technician A nor B
An overheating vehicle is being discussed.
Technician A states that the vehicle may be
overheating because the heater control valve
is stuck closed. Technician B states that the
vehicle may be overheating because the
PCM in not energizing the cooling fan relay.
Who is correct?
Select one:
a. Technician A only
b. Technician B only
c. Both Technicians A and B
d. Neither Technician A nor B
An overheating vehicle is being discussed. Technician A states that the vehicle may be overheating becuase the heater control valve is stuck closed. Technician B states that the vehicle may be overheating because the PCM in not energizing the cooling fan relay. Who is correct?
Chapter 21 Solutions
Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
Ch. 21 - What is normal operating coolant temperature?Ch. 21 - Explain the flow of coolant through the engine and...Ch. 21 - Why is a cooling system pressurized?Ch. 21 - Describe how to diagnose a heater problem.Ch. 21 - What are 10 common causes of overheating?Ch. 21 - What diagnostic trouble code (DTC) could be set if...Ch. 21 - Prob. 2CQCh. 21 - What type of pump is a water pump? a. Positive...Ch. 21 - Water pumps __________. a. only work at idle and...Ch. 21 - Which statement is true about thermostats? a. The...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Which of the following statements is not true? A direct acting PRV: Is complex in construction, therefore can malfunction if a very small dirt gets trapped inside the valve, which may result in safety hazard Offers uneven flow Does not provide precise pressure control Causes more wastage of HP compared to a compound one Which of the following basic system components has the primary function of removing the heat of compression from the air? Receiver Relief valve Pressure regulator Dryer Aftercooler Which of the following statements is true? A single acting cylinder may have two ports at two different ends and pressurized fluid can be directed to both of them A single acting cylinder with two ports will can be used as a double acting cylinder A single acting cylinder may have two ports at two different ends but into only one of the ports pressurized fluid is being directed A single acting cylinder…arrow_forwardTechnician A says that some refrigerant leaks can also be traced to pinholes in the evaporator caused by acid, which forms when water and refrigerant mix. Technician B says that leaks are most often found at the compressor hose connections and at the various fittings and joints in the system. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forward9. While preparing to remove an engine: Technician A disconnects the refrigerant lines at the air-conditioning compressor and allows the refrigerant to totally leak out before removing the compressor. Technician B installs plugs in the ends of the refrigerant hoses after they have been disconnected. Who is correct?arrow_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_forwardwhat type of radiator pressure cap is found on today's vehiclearrow_forwardA vehicle has had several radiator replacements, and each time there has been pinhole leaks in the aluminum. Technician A states that the engine coolant may need to be exchanged more often. Technician B states that the engine grounds should be inspected closely since this could be the cause. 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_forward
- Choose correct answer: Which one of the following devices creates only flow? An external gear pumps Pressure relief valve Pneumatic compressors Pressure reducing valvearrow_forwardA compression test gave the following results: cylinder #1 = 155, cylinder #2 = 140, cylinder #3 = 110, cylinder #4 = 105. Technician A says that a defective (burned) valve is the most likely cause. Technician B says that a leaking head gasket could be the cause.arrow_forwardTechnician A says that when the refrigerant is pumped out of the compressor and sent to the condenser, heat in the refrigerant is moved to the outside air by conduction and convection. Technician B says that the refrigerant leaves the bottom of the condenser as a high-pressure, high-temperature liquid. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forward
- Technician A says that air in the system can cause excessive pressure within the system, restricting the refrigerants ability to change its state from gas to liquid within the refrigeration cycle. Technician B says that moisture can cause freeze-up at the cap tube or expansion valve, which restricts refrigerant flow or blocks it completely. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardAn engine overheats in traffic but is fine when driving: Technician A says a faulty thermostat may be the cause. Technician B says the fan clutch could be the cause. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardWhich of the following is not a true statement about thermostats? Faulty thermostats are often the cause of air pockets in the coolant passages. They can also cause an increase in fuel consumption and poor engine performance. If the thermostat is stuck open, the coolant may not reach the desired temperature because it is cooled before it gets hot If a thermostat is stuck closed, coolant will not flow between the engine and radiator and the engine will quickly overheatarrow_forward
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