Today's Technician Automotive Engine Performance, Classroom and Shop Manuals 8th Edition By Ken Pickerill (Solutions Manual)

Solutions Manual for
Today's Technician Automotive
Engine Performance, Classroom
and Shop Manuals 8e By Ken
Pickerill
(All Chapters 1-13, 100% Original
Verified, A+ Grade)
All Chapters Arranged Reverse: 13-1
This is the Original Solutions Manual
for 8th Edition, All Other Files in the
Market are Wrong/Old Questions.

,Solution and Answer Guide
Pickerill and Emmons, Today’s Technician: Automotive Engine Performance, 8e,
9780357619872; Classroom Manual Chapter 13: Related Systems



TABLE OF CONTENTS
Classroom Manual: Answers to Short-Answer Essay Questions.................................1
Classroom Manual: Answers to Fill-in-the-Blank Questions......................................2
Classroom Manual: Answers to Multiple Choice Questions........................................4
Shop Manual: Answers to ASE-Style Review Questions..............................................6
Shop Manual: Answers to ASE Challenge Questions...................................................8




CLASSROOM MANUAL: ANSWERS TO SHORT-ANSWER
ESSAY QUESTIONS
1. Explain the operation of the manual transmission clutch.

Answer
Manual transmission clutches are used to mechanically connect the engine's flywheel to the transmission or
transaxle input shaft through the use of a special friction plate splined to the input shaft. When the clutch is
engaged, the friction plate contacts the flywheel, transferring power through the plate to the input shaft.

2. Explain the terms constant mesh and fully synchronized.

Answer
Constant mesh means that regardless of the vehicle being stationary or moving, the gears are constantly in
mesh. Fully synchronized means that the unit uses a mechanism of brass rings and clutches to bring
rotating shafts and gears to the same speed before shifts occur.

3. Define final drive gear.

Answer
The final drive gear is the differential that provides an additional gear reduction above and beyond what the
transmission can provide.

4. What component in an electronic cruise control system is used to monitor or sense vehicle speed?
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website, in whole or in part.
Answer
The vehicle speed sensor (VSS) is used to monitor or sense vehicle speed in an electronically controlled
system.




1

, 5. Define dynamic and static wheel balance.

Answer
Dynamic wheel balance is the equal weight distribution on each side of the wheel/tire assembly. Static
wheel balance is the equal weight distribution around a wheel/tire assembly on one side. Dynamic wheel
balance means the wheel is balanced even while spinning. Static balance means the wheel and tire are
balanced sitting still.

6. Briefly describe how an electronically controlled automatic transmission knows when to shift gears.

Answer
Shifting in an automatic transmission is controlled by a hydraulic system. Most late-model automatic
transmissions use electronics to determine the correct shifting time with the hydraulic system.

7. Explain the primary purpose of the torsional coil springs in the transmission’s clutch disc.

Answer
The primary purpose of the torsional coil springs in the transmission's clutch disc is to allow the disc to
rotate slightly in relation to the pressure plate to absorb the torque forces.

8. Describe the purpose of a brake wheel cylinder.

Answer
The brake wheel cylinder is to force the brake shoes outward by using the hydraulic force supplied by the
master cylinder.

9. Explain what happens during the coupling point of conventional torque converter operation.

Answer
Coupling stage is the point that the turbine and impeller are turning the same speed, usually about 40–45
mph. It is the point when torque multiplication stops.

10. Explain what is necessary for torque converter clutch lockup engagement to take place.

Answer
The lockup torque converter clutch is controlled by the PCM. The computer receives electronic signals
from the different sensors confirming that the requirements for lockup have been met.


CLASSROOM MANUAL: ANSWERS TO FILL-IN-THE-
BLANK QUESTIONS
1. When the brake pedal is depressed, a force is put onto the hydraulic fluid in the ____ ____.
Answer
© 2025 Cengage.
master All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible
cylinder
website, in whole or in part.

2. A vehicle always pulls toward a wheel with the most ____ camber.
Answer



2

, positive

3. The cruise control on a throttle-by-wire system does not require a(n) _______ _______.
Answer
stepper motor

4. The primary purpose of tires is to provide ____.
Answer
traction

5. A driveline consists of a hollow drive or propeller shaft that is connected to the transmission and drive axle
differential by ____ ____.

Answer
U-joint (universal joint)

6. The clutch is used to mechanically connect the engine’s flywheel to the transmission or transaxle ____
____.

Answer
input shaft

7. The pressure control solenoid inside the transmission controls the ___________ pressure of the
transmission according to commands from the PCM.

Answer
line

8. When the vehicle comes to a stop, it is held in place by ____ ____.
Answer
static friction

9. An automatic transmission eliminates the use of a mechanical clutch and shift lever. In place of a clutch, it
uses a fluid coupling called a(n) ____ ____.

Answer
torque converter

10. The ____ ____ sensor allows the A/C controller to compensate for the effects of the sun on heating in the
winter and cooling in the summer.

Answer
sun load
© 2025 Cengage. All Rights Reserved. May not be scanned, copied or duplicated, or posted to a publicly accessible
website, in whole or in part.




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