Ignition coil and plug diagnostics.
A secondary ignition waveform is not just about the coil; it is also about the resistance of the air and fuel mixture inside the combustion chamber. When you are looking at a secondary ignition waveform, you need to be looking at the spikes and the hash in between. Measuring the voltage of the secondary ignition directly is not an option. The high voltages will damage any scope or meter. Capturing a secondary ignition waveform requires a capacitive probe. This type of probe can be either the traditional clamp over an ignition wire or a “paddle” that makes contact with the surface of the coil or wire.
Stop/start technology is more than just a switch wired to the brake pedal and starter.
An auxiliary cooling pump’s primary function is to circulate warm coolant to the heater core.
The battery may be fully charged, but you also need to measure how low the voltages go while the engine is cranking.
When the fuel/air mixture ignites, many factors must be met to pass a misfire monitor.
Faulty battery cables, if loose, corroded, or damaged, can lead to power drainage.
Power windows are great as long as they roll up and down when commanded to do so.
The area of contact between the lifters and cam lobes is the highest loaded surface inside an engine.
Many alternator problems turn out to be nothing more than a bad connection at the alternator or a bad wiring harness.