Brian Eslick from How to Automotive http://www.howtoautomotive.com/ is working on a Ford 150/Lincoln Navigator with 3.5L Eco-boost engine with turbo noise and shows you what the noise was caused by.
How to Diagnose Code P0171-P0174 on a Chevy Silverado 2500 HD
Volvo XC60 No Communication with Data Link Connector
Brian Eslick from How to Automotive http://www.howtoautomotive.com takes you step-by-step through the process of diagnosing no communication with data link connector on a Volvo XC60.