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(Chapters 4 and 5) Fuel Trim and Oxygen Sensor Testing
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In this video I’ll show how to perform an oxygen sensor response test, and how to inspect for a leaking fuel pressure regulator.
View More About This Video: Leaking Fuel Pressure Regulator (symptoms and testing)
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In this video I will show you how to use trouble codes, freeze frame data, short term and long term fuel trim data to determine the type of lean condition.
View More About This Video: How to use Fuel Trim to identify the cause of a P0171 and P0174 code
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I in this video I am comparing two different cars.
View More About This Video: Using Fuel Trim to identify type of misfire (can it be done?)
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Anytime you have idle speed control related trouble codes (P0505, P0506, P0507) the first thing you want to look for is a vacuum leak.
View More About This Video: P0506 IAC System RPM below expected (vacuum leak) - Ford
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How to quickly test an O2 sensor signal wire for opens and shorts when no scan data is available.
View More About This Video: How to simulate a rich & lean O2 signal (PCM response testing)