Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 31, Problem 2SA
What is indicated by a LTFT reading of 24 percent?
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Given the following information: (I found this question on the internet and was wondering what the correct answer is)
Firing rate demand = 20%
Fuel air ratio = 2:1
Fuel flow = 20%
Minimum air flow setting = 5%
What is the set point for the air flow controller?
5%B. 10%C. 25%D. 40%
. Where is a dew point analyzer installed to measure instrument air?(I found this question on the internet and am wondering what the correct answer is)
A. AB. BC. CD. D
The piston at the bottom of the stroke is 0% open. Which adjustment will change the zero setting to 5% open? ( I found this sample question on the internet and was wondering what the correct answer is out of interest)
A.Slide component 2 towards the pivotB. Slide component 2 away from the pivot.C. Increase spring tension using adjustment 1.D. Decrease spring tension using adjustment 1.
Chapter 31 Solutions
Automotive Technology
Ch. 31 - List four service precautions for working on the...Ch. 31 - What is indicated by a LTFT reading of 24 percent?Ch. 31 - Describe how testing GDI fuel systems differs from...Ch. 31 - What is the difference between the pulse width and...Ch. 31 - How can you use a dual trace scope to make sure...Ch. 31 - What are three possible problems that can allow...Ch. 31 - What is the purpose of having two accelerator...Ch. 31 - What is indicated by a negative LTFT value?Ch. 31 - What problem may result from dirt buildup on an...Ch. 31 - What is the difference between STFT and LTFT?
Ch. 31 - True or False? The signals from an air-fuel ratio...Ch. 31 - Prob. 2TFCh. 31 - Which of the following is the most likely cause of...Ch. 31 - The PCM checks for a closed throttle plate each...Ch. 31 - Which of the following would not cause a...Ch. 31 - While discussing the causes of...Ch. 31 - While discussing IAC valve diagnosis: Technician A...Ch. 31 - While discussing IAC motor removal, service, and...Ch. 31 - While discussing injector testing: Technician A...Ch. 31 - While discussing airflow sensors: Technician A...Ch. 31 - While discussing scan tool diagnosis of fuel...Ch. 31 - While discussing a high idle speed problem:...Ch. 31 - While discussing the causes of a rich air-fuel...Ch. 31 - While diagnosing an idle speed problem: Technician...Ch. 31 - While looking at fuel trim values: Technician A...
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