January 2021 Archives - UnderhoodService
Oxygen Sensors And Catalyst Efficiency

Newer air/fuel ratio or wide-band sensors can detect a wide range of fuel conditions.

Cavitation: Killer Of Water Pumps

The condition of the coolant has a direct relationship to cavitation in pumps.

BMW Dual-Clutch Transmission Diagnostics

A DCT transmission uses the gearing principles of a manual transmission.

Honda Oil System Inspection Procedures

The leading cause of low oil pressure-related complaints with Honda vehicles is the oil level.

How Battery Service Continues To Change

Your attention to a battery’s condition will tell you if it needs to be replaced – and with what.

7 Reasons Direct-Injection High-Pressure Fuel Pumps Fail

High-pressure fuel pumps can malfunction and/or fail due to a number of factors.

Chrysler EPS Module Connector Security

During EPS module electrical diagnosis and verification, DO NOT disconnect the gray EPS torque sensor connector.

Ford Clock Master Diagnostics

The clock master is the master module responsible for keeping time and broadcasting this information to the slave module(s).