BuyFind

Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
Publisher: Cengage Learning
ISBN: 9781133612315
BuyFind

Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
Publisher: Cengage Learning
ISBN: 9781133612315

Solutions

Chapter
Section
Chapter 34, Problem 15RQ
Textbook Problem

A vehicle is setting a lean exhaust code and the HO2S data shows the exhaust to be very lean. Technician A says a malfunctioning AIR system may be the cause. Technician B says a clogged EGR may be the cause. Who is correct?

a. Technician A only

b. Technician B only

c. Both A and B

d. Neither A nor B

Expert Solution
To determine

The technician with correct approach when a vehicle is setting a lean exhaust code and the HO2S data shows the exhaust to be very lean.

Explanation of Solution

Given:

Technician A says a malfunctioning AIR system may be the cause.

Technicians B says a clogged EGR valve may be the cause.

When the engine is running at a normal temperature, if the AIR system pumps excess air into the exhaust port, this additional air causes lean signals from the HO2S or sensors. Now the PCM respond to these signals and provide an extra amount of air-fuel ratio...

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Chapter 34 Solutions

Automotive Technology: A Systems Approach (MindTap Course List)
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