Customer Vehicle: This article is about a 2006 Audi A4 with the 1.8L Turbocharged engine.
Customer complaint: The vehicle had the check engine light on. Diagnosis: We verified the complaint, test drove the vehicle and there was a noticeable lack of power. After much testing and diagnosis we decided to check how much crank case vacuum we had. See the video of us testing the crank case pressure -
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This is a road test where we monitored Lambda values on a Honda Accord. A/F Lambda reading on the scan tool above 1.0 is lean, rich mix is below 1.0. The computer tries to keep the mixture at 1.0 which is equivalent to 14.7:1 Air fuel ratio. This is a customer vehicle my lab partner and I worked on recently while going to school at BYU-Idaho.
2003 Chevrolet Trailblazer 4wd 4.2L The customer complained of low power and running rough. We attempted to test drive the vehicle and found it would not go over 10mph. The engine would rev high but there was a lack of power. We checked for codes and found several codes: P0495, P0172, P0420, P0756, P1484 |
AuthorWalker Crystal Archives
May 2019
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