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Author Question: Technician A says that vehicles with electronic returnless fuel systems use pulse width modulation ... (Read 291 times)

tfester

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  • Posts: 534
on: Jun 23, 2018
Technician A says that vehicles with electronic returnless fuel systems use pulse width modulation to power the fuel pump and maintain fuel pressure. Technician B says that the electronic returnless fuel system uses a power transistor to control the fuel pump. Which technician is correct?
 
  A) Technician A only B) Technician B only C) Both technicians D) Neither technician

Question 2

The switching valves on the AIR pump have failed several times. Technician A says that a defective exhaust check valve could be the cause. Technician B says that a restricted exhaust system could be the cause. Which technician is correct?
 
  A) Technician A only B) Technician B only C) Both technicians D) Neither technician


anyusername12131

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Reply #1 on: Jun 23, 2018
Answer to Question 1

C

Answer to Question 2

C


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