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Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315

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BuyFindarrow_forward

Automotive Technology: A Systems A...

6th Edition
Jack Erjavec + 1 other
ISBN: 9781133612315
Textbook Problem

Which of the following is a likely cause of a lean condition during acceleration and cruising speeds?

a. A defective oxygen sensor

b. A defective PCM

c. A defective ECT sensor

d. A defective MAF sensor

To determine

The cause for lean condition during acceleration and cruising speeds.

Explanation

The cause for lean condition during acceleration and cruising speeds is a defective PCM. The reason behind this is that the PCM constantly adjusts the activity of the fuel injectors to meet the current operating conditions so, if there is a defective PCM the fuel injectors will work abnormally and the PCM makes adjustment to the fuel trim according to signals from the oxygen sensors...

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