ASE A8 performance Exam 2025
Questions and Answers
spark plug wire resistance should be - ANSWER✔✔-5000 to 10000 ohms
how do you test spark plug cables insulation - ANSWER✔✔-spray it with salt water
The specification, such as 10 BTDC, indicates that - ANSWER✔✔-indicates that the spark occurs
at 10 degrees before top dead center of the compression stroke
With an increase in speed, ignition must begin - ANSWER✔✔-earlier to end by 23 degrees ATDC
Each cylinder must produce power once every - ANSWER✔✔-720 degrees
what is the differance between tbi pfi and gdi - ANSWER✔✔-throttle body injection
port fuel injection
gas direct injection
ideal air to fuel ratio is - ANSWER✔✔-14.7:1
EGR valve, air pump, and evaporative emissions canister are controlled by the - ANSWER✔✔-pcm
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
,what is open loop mode? - ANSWER✔✔-when the engine is too cold to burn all fuel the engine
doesn't respond to sensor feedback
Fail-Safe or Limp-In Mode - ANSWER✔✔-ether usses other signals to compensate for out of range
sensors or limits the rpm to 1200
tps adaptive strategy does what - ANSWER✔✔-if something like the tps drops from its normal
range it will adjust for wear by adding voltage.
Air induction system - ANSWER✔✔-An engine system that directs outside air into the engine's
intake manifold
Closed loop - ANSWER✔✔-An electronic feedback system in which the sensors provide constant
information on what is taking place in the engine
Drive cycle - ANSWER✔✔-The operating conditions that must exist before OBD II self-diagnosis
can take place. It includes an engine start and operation that brings the vehicle into closed loop and
includes whatever specific operating conditions are necessary, either to initiate and complete a
specific monitoring sequence or to verify a symptom or repair.
Enable criteria - ANSWER✔✔-The operating conditions that must be met to run some OBD II
monitors.
obd2 Freeze frame - ANSWER✔✔-With this feature of OBD II systems, the PCM takes a snapshot
of the activity of various inputs and outputs at the time the PCM illuminated the MIL
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
, Parameter identification (PID) - ANSWER✔✔-A scan tool display for OBD II systems that shows
current emission-related data values of inputs and outputs, calculated values, and system status
information.
Trip - ANSWER✔✔-An OBD II drive cycle that includes all of the conditions
basic diagnostic checks 4 - ANSWER✔✔-1battery voltage and charging system operation
2check for open fuses
3vissually inspect componants of system
4check for aftermarket parts
what does a scan tool use a PID for - ANSWER✔✔-obd2 standardized system like the coolant
temp sensor
when connecting the scan tool what two things should have been done? - ANSWER✔✔-get engine
at operating temp set key to off
KOEO self test - ANSWER✔✔-key on engine off
KOER self test - ANSWER✔✔-Key on engine running
obd2 mode 6 data - ANSWER✔✔-allows to monitor data on any scan tool. can check for missfires.
oxogen sensors ect
visual inspections after finding a dtc - ANSWER✔✔-check vacuum lines
check belts
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3
Questions and Answers
spark plug wire resistance should be - ANSWER✔✔-5000 to 10000 ohms
how do you test spark plug cables insulation - ANSWER✔✔-spray it with salt water
The specification, such as 10 BTDC, indicates that - ANSWER✔✔-indicates that the spark occurs
at 10 degrees before top dead center of the compression stroke
With an increase in speed, ignition must begin - ANSWER✔✔-earlier to end by 23 degrees ATDC
Each cylinder must produce power once every - ANSWER✔✔-720 degrees
what is the differance between tbi pfi and gdi - ANSWER✔✔-throttle body injection
port fuel injection
gas direct injection
ideal air to fuel ratio is - ANSWER✔✔-14.7:1
EGR valve, air pump, and evaporative emissions canister are controlled by the - ANSWER✔✔-pcm
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 1
,what is open loop mode? - ANSWER✔✔-when the engine is too cold to burn all fuel the engine
doesn't respond to sensor feedback
Fail-Safe or Limp-In Mode - ANSWER✔✔-ether usses other signals to compensate for out of range
sensors or limits the rpm to 1200
tps adaptive strategy does what - ANSWER✔✔-if something like the tps drops from its normal
range it will adjust for wear by adding voltage.
Air induction system - ANSWER✔✔-An engine system that directs outside air into the engine's
intake manifold
Closed loop - ANSWER✔✔-An electronic feedback system in which the sensors provide constant
information on what is taking place in the engine
Drive cycle - ANSWER✔✔-The operating conditions that must exist before OBD II self-diagnosis
can take place. It includes an engine start and operation that brings the vehicle into closed loop and
includes whatever specific operating conditions are necessary, either to initiate and complete a
specific monitoring sequence or to verify a symptom or repair.
Enable criteria - ANSWER✔✔-The operating conditions that must be met to run some OBD II
monitors.
obd2 Freeze frame - ANSWER✔✔-With this feature of OBD II systems, the PCM takes a snapshot
of the activity of various inputs and outputs at the time the PCM illuminated the MIL
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 2
, Parameter identification (PID) - ANSWER✔✔-A scan tool display for OBD II systems that shows
current emission-related data values of inputs and outputs, calculated values, and system status
information.
Trip - ANSWER✔✔-An OBD II drive cycle that includes all of the conditions
basic diagnostic checks 4 - ANSWER✔✔-1battery voltage and charging system operation
2check for open fuses
3vissually inspect componants of system
4check for aftermarket parts
what does a scan tool use a PID for - ANSWER✔✔-obd2 standardized system like the coolant
temp sensor
when connecting the scan tool what two things should have been done? - ANSWER✔✔-get engine
at operating temp set key to off
KOEO self test - ANSWER✔✔-key on engine off
KOER self test - ANSWER✔✔-Key on engine running
obd2 mode 6 data - ANSWER✔✔-allows to monitor data on any scan tool. can check for missfires.
oxogen sensors ect
visual inspections after finding a dtc - ANSWER✔✔-check vacuum lines
check belts
FOR STUDY PURPOSES ONLY COPYRIGHT © 2025 ALL RIGHTS RESERVED 3
