Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Chapter 27, Problem 1ASRQ
To determine
The technician with correct approach.
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Technician A says that a faulty radiator fan
relay can cause an engine to overheat.
Technician B says that bidirectional control
is NOT used to test an electric cooling fan.
Who is correct?
Select one:
a. Technician A only
b. Technician B only
c. Both A and B
d. Neither A nor B
What does a slope in the spark line represent?
a. Low secondary resistance
b. High resistance in the primary circuit
c. An incorrect air-fuel mixture
d. High resistance in both the primary and secondary circuit
Technician A says that you may be able to
smell antifreeze from a leaking heater core.
Technician B says that you may be able to
hear a loose belt when the engine is running.
Who is correct?
Select one:
a. Technician A only
b. Technician B only
c. Both A and B
d. Neither A nor B
Chapter 27 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 27 - Name the three types of stress testing used to...Ch. 27 - Prob. 2RQCh. 27 - Name the three types of trace pattern display...Ch. 27 - Prob. 4RQCh. 27 - List at least two methods of checking the...Ch. 27 - What happens if one of the ground electrodes of a...Ch. 27 - True or False? The first test when checking a...Ch. 27 - Richer air-fuel mixtures. a. decrease the...Ch. 27 - Prob. 9RQCh. 27 - What does a slope in the spark line represent?
Ch. 27 - True or False? On some engines, if the gap between...Ch. 27 - What is the typical procedure for checking the...Ch. 27 - While checking a pickup coil with an ohmmeter, a...Ch. 27 - A CKP sensor can be checked with all of the...Ch. 27 - Which of the following will cause one or more, but...Ch. 27 - Prob. 1ASRQCh. 27 - Prob. 2ASRQCh. 27 - Prob. 3ASRQCh. 27 - Technician A says that EMI can affect sensor...Ch. 27 - While discussing waste spark EI systems:...Ch. 27 - While discussing how to test a Hall-effect...Ch. 27 - While discussing the possible causes for a...Ch. 27 - Prob. 8ASRQCh. 27 - While discussing EI service and diagnosis:...Ch. 27 - While discussing engine misfire diagnosis:...
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- An engine cranks slowly: Technician A says that a possible cause of the problem is poor starter circuit connections. Technician B says that an engine problem could be the cause. Who is correct?arrow_forwardWhile discussing ignition timing control in EI systems: Technician A says that when the engine coolant temperature is low, the timing is retarded until normal operating temperature is reached. Technician B says that the PCM will retard the timing during EGR operation. Who is correct? Technician Ac.Both A and B b. Technician B d. Neither A nor Barrow_forwardWhile discussing ignition timing requirements: Technician A says that more advanced timing is desired when the engine is under a heavy load. Technician B says that more advanced timing is desired when the engine is running at high engine speeds. Who is correct?arrow_forward
- While discussing secondary voltage: Technician A says that the normal required secondary voltage is higher at idle speed than at wide open throttle conditions. Technician B says that the maximum available secondary voltage must always exceed the normally required secondary voltage. Who is correct?arrow_forwardA small horsepower Briggs engine's spark plug is firing too late. Tech a says that the spark plug gap may be to small. Tech b says that the spark plug gap may be too big. Who is correct?arrow_forwardI need the answer as soon as possiblearrow_forward
- While discussing central port injection systems: Technician A says that CPI systems use one injector and several injector nozzles. Technician B says that CPI systems open each injector sequentially. Who is correct? A.Technician A B.Technician B C.Both A and B D.Neither A nor Barrow_forwardTechnician A checks a starter’s field coils for opensby connecting an ohmmeter between the coils’power feed wire and the field coil brush lead. TechnicianB checks a starter’s field coil for a short toground by connecting an ohmmeter across the fieldcoil brush lead and the starter housing. Who iscorrect?a. Technician Ab. Technician Bc. Both A and Bd. Neither A nor Barrow_forwardTechnician A says that many vehicles use an AC generator as the charging unit. Technician B says that all vehicles use an alternator as the charging unit. Who is correct? a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forward
- A spark plug is examined and it is notice that the plug is fouled with a stick black substance. Tech a says that the engine is running too rich (too much fuel). Tech b says that the plug is oil fouled and that a proper burning plug would be light in tan color. Who is correct?arrow_forwardAn 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_forward20. Technician A says that an ignition system must generate sufficient voltage to force a spark across the spark plug gap. Technician B says that the ignition system must time the arrival of the spark to coincide with the movement of the engine's pistons and vary it according to the operating conditions of the engine. Who is correct? O a. Technician A O b. Technician B c. Both A and B O d. Neither A nor Barrow_forward
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