The PCM opens the throttle plate further when the engine is warm than when it is cold.

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $9.99Unlock all

Enhance your skills with the Power and Performance III Tuners Test. Prepare using flashcards and multiple-choice questions, each with comprehensive explanations and hints. Excel in your exam with confidence!

Multiple Choice

The PCM opens the throttle plate further when the engine is warm than when it is cold.

Explanation:
When the engine is cold, the electronic throttle control system typically opens the throttle plate more to raise idle speed and help with cold-start warm-up. As the engine reaches operating temperature, the PCM reduces the throttle opening to maintain a stable, efficient idle and lower emissions. So the throttle plate is not opened further when warm; it’s opened more when cold. There can be temporary variations under different loads, but the normal behavior is the opposite of the statement.

When the engine is cold, the electronic throttle control system typically opens the throttle plate more to raise idle speed and help with cold-start warm-up. As the engine reaches operating temperature, the PCM reduces the throttle opening to maintain a stable, efficient idle and lower emissions. So the throttle plate is not opened further when warm; it’s opened more when cold. There can be temporary variations under different loads, but the normal behavior is the opposite of the statement.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy