Your first tool for diagnosing an ignition issue is your eyes. Spend some time inspecting the coil’s connector, boot and the spark plug. Often the cause of an ignition system problem will present itself.
Here are a few tips to follow when diagnosing brake pull during a test drive.
What if there are no codes and a misfire is intermittent? This is where it gets complicated.
When trying to cure a pull problem, it could be an issue with stacked tolerances of different components and systems.
Click-style torque wrenches can be very accurate, but due to how the wrench makes the click, it can lose its factory calibration.
Like with any air ride system, you have to perform specific procedures before you can work on the Telsa’s suspension or lift the vehicle. Some procedures will require a scan tool to actuate the valves in the system.
To diagnose an overheating or overcooling complaint, the most important thing is to understand what happens when a component fails and how the control system reacts.
Diagnosing electric power steering systems requires a technician to understand how the modules and sensors work together to determine the level of assist.
Understanding what comes out through the exhaust valve is critical to solving any emissions or driveability problem.
If a vehicle comes in with a complaint of poor heater performance, the issue may be the auxiliary water pump.
The only way to diagnose the sensor and circuit is with a scan tool or scope.