How to Test an Alternator With a Volt Meter?

Answer Alternator output should be stable for a vehicle to perform properly. The level of output should only vary with load and engine speed. An over- or under-charging alternator can quickly lead to all ... Read More »

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How to Test TPS With a Volt Ohm Meter?

A throttle position sensor --- TPS --- is an electrical resistor housed on the throttle body. The TPS feeds information to the engine control unit regarding the degree at which the throttle valve i... Read More »

How to Test Cam Sensors With a Volt Meter?

A cam sensor is a device on your car that measures where your vehicle's engine cams are in their rotation. The cam sensor reports this information back to your car's power control module, which is ... Read More »

How to Use a Volt-Ohm Meter to Test Potentiometers?

A potentiometer is a variable electrical resistor. It contains two end terminals and one "wiper" terminal. As the potentiometer wiper moves across the potentiometer, the resistance between the wipe... Read More »

How to Test an Alternator With a Meter?

Testing your alternator with a voltmeter is the easiest and most effective way to find out if it has enough power to recharge the battery. You don't have to disconnect the battery cables to test th... Read More »