Free ASE A-Series Practice Test

Ready to see how prepared you are for the official ASE A-Series exam? Take our free ASE A-Series practice test below for 20 challenging questions. Don’t forget to check out our ASE A-Series Exam Prep app available on the iOS App Store and Android Google Play. Good luck!

1. The bushing in the extension housing on a transmission is worn on one side. Technician A says that this could be caused by binding U-joints. Technician B says that this is more likely caused by excessive output shaft end-play. Who is correct?
 
 
 
 
2. Technician A says that most tripod-type CV-joints use a cage and balls in their construction. Technician B says that on a tripod-type CV-joint, the outer race is of a tulip design. Who is correct?
 
 
 
 
3. Technician A says that a missing tooth on a crank sensor reluctor ring will cause a misfire in the engine. Technician B says that on a Chrysler system, a missing tooth tells the computer where the number one cylinder is. Who is correct?
 
 
 
 
4. Technician A says that a brake booster works because it has vacuum on one side of a diaphragm and atmospheric pressure on the other. Technician B says that a diesel engine has too much vacuum and must have a vacuum reducer installed in the line to the booster. Who is correct?
 
 
 
 
5. Technician A says that rear differential gear wear is mainly caused by contaminated fluid. Technician B says that old fluid is the primary cause for scored gear teeth. Who is correct?
 
 
 
 
6. Technician A says that an engine oil thermostat will help to bring the engine oil temperature up quickly. Technician B says that an oil thermostat bypasses the oil cooler until the engine gets to operating temperature. Who is correct?
 
 
 
 
7. Technician A says in order to make your car run cooler, you can just put in a lower opening temperature thermostat and it will run fine. Technician B says that if a thermostat is stuck shut, it could cause overheating. Who is correct?
 
 
 
 
8. Piston installation is being discussed. Technician A says to make sure all of the piston ring gaps are lined up vertically. Technician B says that the oil ring must be installed first. Who is correct?
 
 
 
 
9. Technician A says that you can use an oscilloscope to inspect diode waveforms to see faulty diodes. Technician B says that you can use an ohmmeter to test for short to grounds on the rotor and stator. Who is correct?
 
 
 
 
10. Technician A says that some instrument clusters have security systems built into them and must be programmed before replacing. Technician B says that some steering columns have security systems built into them and must be programmed before replacing. Who is correct?
 
 
 
 
11. A vehicle has an excessive amount of free play in the steering wheel. Technician A says that worn tie-rod ends are most likely the cause. Technician B says that it is always the worn lower ball joint. Who is correct?
 
 
 
 
12. Technician A says that a shift solenoid is a hydraulically controlled device used by the transmission for shift control. Technician B says that shift solenoids are computer controlled devices that can be diagnosed with a scanner. Who is correct?
 
 
 
 
13. A car comes in with an overheating catalytic converter. Technician A says that it is probably due to a faulty MAP sensor. Technician B says that it is most likely caused by a bad or disconnected plug wire. Who is correct?
 
 
 
 
14. Rod to stroke ratio is being discussed. Technician A says that longer rods allow for more drastic camshaft configurations. Technician B says that it is determined by dividing the connecting rod length by the stroke. Who is correct?
 
 
 
 
15. Leaf springs are being discussed. Technician A says that some leaf springs are made of plastic. Technician B says that spring rate increases as the spring thickness increases. Who is correct?
 
 
 
 
16. Technician A says that water pumps flow the coolant throughout the cooling system, always from top to bottom of the radiator. Technician B says that some cooling systems have to be bled to remove air from the system. Who is correct?
 
 
 
 
17. Technician A says that some turbocharger impellers are made of ceramic to cut down on turbo lag. Technician B says that turbochargers scavenge intake air to turn the impeller and provide boost. Who is correct?
 
 
 
 
18. Technician A says that when installing the brake shoes on a dual-servo design brake system, you must pay attention to where the primary shoe is installed as well as the secondary shoe. Technician B says that the adjusting link must be tested and lubed. Who is correct?
 
 
 
 
19. Technician A says that open-loop computer control results in less emissions. Technician B says that oxidizing catalytic converters control HC, CO and NOx. Who is correct?
 
 
 
 
20. Technician A says that a faulty accumulator desiccant bag could allow foreign material to enter the AC system. Technician B says that a damaged compressor will allow foreign material to enter the AC system. Who is correct?