The section covers batteries, serpentine belts and tensioners, alternators and starters and decoupler pulleys including OAP and OAD. Use our Starting & Charging Diagnostics eLearning Tool to run through intuitive, interactive diagnostics.

Starter Will Not Crank When Hot (Heat Soak)

If your starter cranks a cold engine, but “drags” or cranks very slowly when hot, there may be a heat soak problem. Learn how to diagnose this issue.


What are OAPs and OADs? And how do they fail?

Learn the signs of failing OAPs and OADs or overrunning alternator pulleys and overrunning alternator decoupler pulleys and how to replace them properly.


Rotating Electric Decision Trees

Use these rotating electric decision trees to better help you diagnose procedures for vehicles with starting or charging issues.


Alternator and Starter Diagnosis

The starter & alternator in older, high-mileage vehicles often have to be replaced more frequently due to factors like low battery, loose cables and more.


Rotating Electric Basics

Most parts professionals categorize starters and alternators as “rotating electric.” Automotive technicians, on the other hand, generally categorize the starter and alternator as part of the starting/charging system. Since the designs of starting and generating systems have evolved during the past decade to include computer controls, the so-called “basics” of each operating system must be constantly revised…


Rotating Electric Troubleshooting Guide

Here’s an easy-to-use, well illustrated rotating electric troubleshooting guide for alternator and starter problems. Brought to you by Remy.


Light Duty Starting and Charging System

Everything you need to know about a starting and charging system in one informative guide. Brought to you by Remy.


Starters and Alternators: Common Misdiagnosis

Bad diodes are a common cause of alternator failure. The diodes are part of the rectifier assembly that converts the alternator’s AC output to DC. The alternator’s charging output flows through six diodes in the rectifier assembly before it goes to the battery and electrical system.


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