Diagnostics

How to Test an Oxygen Sensor

Brian Eslick from How to Automotive takes you step-by-step through the process of testing an oxygen sensor. 

How to Diagnose Rattling Noises Under the Hood of your Car

Brian Eslick from How to Automotive takes you step-by- step through the process of diagnosing rattling noises under the hood.

How to Diagnose a Door Lock Actuator on a 2007 Toyota 4Runner

Brian Eslick from How to Automotive takes you step-by- step through the process of diagnosing the driver side door lock actuator on a 2007 Toyota 4Runner.

How to Test a Power Window Motor with a Power Probe 2

Brian Eslick from How to Automotive takes you step-by-step through the process of testing a power window motor with a Power Probe testing tool.

How to Diagnose an EGR Valve on a Mercedes

Brian Eslick from How to Automotive takes you step-by-step through the process of diagnosing an EGR valve on a Mercedes. Car came in with code P0400 insufficient EGR flow. You will need a vacuum pump jumper wires powerPro tester for a 12 V battery source.

How to Diagnose a Nissan Maxima with Codes P0115 and P0125

Brian Eslick from How to Automotive takes you step-by-step through the process of diagnosing codes P0115 and P0125 on a Nissan Maxima. Both codes coolant related. Scan tool needed. This is a little bit more advanced.

How to Diagnose a Coolant Leak on a 2011 Mini Cooper S

Brian Eslick from How to Automotive takes you step-by-step through the process of diagnosing a coolant leak on a 2011 Mini Cooper S. You will start by filling up cooling system with water and pressure testing system. You will need a coolant pressure tester. The one I use is made by Astro part#78585.

How to Diagnose Belt Noise on a 2010 Lexus ES350

Brian Eslick from How to Automotive takes you step-by-step through the process of diagnosing squeak noise coming from the drive belt on a 2010 Lexus ES350.

How to Diagnose the EGR Valve on a Chevy Suburban with a 5.3 L Engine

Brian Eslick from How to Automotive takes you step-by-step through the process of diagnosing the EGR valve on a 2000 Chevy suburban with a 5.3 L engine that is making the engine stall.