There are a few different tests for oxygen sensors (also known as lambda sensors), some of which can be run without dedicated tools. The most effective tests tend to be done under normal operating conditions, on a sensor installed on an engine system, though there are some tests which can be done off-vehicle. You can test oxygen sensors with the following tools: Multimeters Clamp-Meters Oscilloscopes The ST05 Oxygen Sensor Tester Caution: Be sure to follow the oxygen sensor manufacturer’s precautions when testing, as well as the tool manufacturer’s directions, and read the vehicle (or other system) service manual before doing any test. Oxygen sensors get very hot when in use, be careful! But wait! Before testing anything, you need to know what kind of sensor you are working with, and where it is.
Glow plugs are installed on many diesel engines to help with cold starts. They usually fail because of corrosion, overheating, mechanical damage, or metal fatigue, and their failure can cause a variety of problems. The easiest way to test a glow plug is by using a clamp-meter, though digital multimeters can also do the job, and glow-plug testers also work. We will cover the following topics in this post: What is a Glow Plug? What are the Symptoms of a Failing Glow Plug? How to Test Glow Plugs with a Clamp-Meter How to Test Glow Plugs with a Digital Multimeter How to Test Glow Plugs with a Glow Plug Tester Caution: Be careful to follow the glow plug manufacturer’s precautions when testing, as well as the test tool’s directions/manual, and read the vehicle (or other system) manual before doing any test.
General Technologies Corp. introduces the first custom designed milliamp capable automotive current clamp meter, to be used as a stand alone tool which does not require a multimeter to work. With its autorange and high sensitivity, it allows the measurement of AC/DC currents with a resolution down to 1 mA, and a maximum current of 100A, making it ideal for tracking and measuring parasitic current drains, current leakages, and any other small currents. It features a small and narrow jaw (1.2″ x 0.53″) to facilitate its use in confined spaces, tight wire bundles, and with small gauge wires. Other features include up to 600 Volts AC/DC voltage, resistance measurement functions, and continuity test (with buzzer). The unit includes user’s manual, test leads, batteries and a soft carrying/storage pouch.