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Why Are Alternators Subject To Ripple Voltage?

The alternator produces an AC current that must be converted into DC current by way of a rectifier.

Alternator Pulley Diagnostics

Don’t automatically assume an illuminated charge light problem is inside the alternator and potentially unserviceable. The problem could be the pulley and belt drive system. Neglecting to test and diagnose the pulley can lead to unnecessary replacement.

Alternator Altercations

The automotive charging system is one system that is very much the same between makes, yet at the same time, so very different. Here’s what you need to know to stay on top of this complex system.

Alternator Ripple Testing: The Ghost in the Machine

Excessive ripple voltage can cause communication issues with networks and communication DTCs in multiple modules. Here’s what you need to know.

Alternator Testing Tips — One Test Is Not Enough

All too often, the alternator is condemned by technicians due to a battery voltage test alone. However, there are many circumstances to consider before dooming the part to the recycling bin.

SAKOR Technologies Provides Customized Starter/Alternator Testing Systems to Major Automotive OEM

The system allows operators to run road load cycles to simulate real-world conditions, including starting the engine, dynamic braking, power assist and battery charging modes.

SAKOR Technologies Provides Customized Starter/Alternator Testing Systems to Major Automotive OEM

The dynamometer can run in motoring or loading modes at maximum rated torque/power in either direction at any time, and can switch between these modes instantaneously. 

Alternator Testing: Diagnostics are Getting More Complicated

One test is not enough if you are diagnosing a charging system problem. All too often, the alternator is condemned as the source of the problem if only battery voltage is present with the engine running. If this is the case, it means that the alternator is not charging, but does not reveal why.

Diagnosing Poor Heater Performance Complaints

If a vehicle comes in with a complaint of poor heater performance, the issue may be the auxiliary water pump.

Throttle-By-Wire Diagnostics

Throttle-by-wire systems proactively manage the air and fuel going into the combustion chamber.