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DIY Auto Service: Ignition Systems Operation Diagnosis and Repair
The ignition system consists of; ignition coils, spark plug wires, spark plugs, pick-up coils, sensors and control modules. Problems could cause misfires or no starts to occur.
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DIY Auto Service; Hydraulic Brake System Diagnosis and Repair
Hydraulic brake system problems could be caused by hydraulic, or mechanical issues.
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DIY Auto Service; Hydraulic Brake System Operation
Hydraulic brake systems use the principles of hydraulics to amplify the drivers foot power to slow the vehicle. The Department of Transportation (DOT) rated brake fluid is used for the hydraulic fluid.
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DIY Auto Service: Cooling System Repair and Diagnosis by Symptom
To diagnose a cooling system you have to understand the basic cooling system components. The cooling system takes heat from one location, moves it to the radiator and gives the heat off to the air.
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DIY Auto Service: AC System Diagnosis by Symptom
AC system diagnosis can be done by feeling the lines for the correct temperature/ pressure relationship. With gauges hooked up, the pressures can be measured and then diagnosed.
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DIY Auto Service: AC System Service and Component Replacement
Learn how to recover and recharge an AC system as well as replacing AC; compressors, condensers, evaporators, accumulators, receiver driers, H-blocks, orifice tubes and lines.
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DIY Auto Service: Air Conditioning (AC) System Operation with TXV or Orifice Tube
AC systems remove heat and moisture using refrigerants such as R134a in a closed system. The pressurized refrigerant boils after a pressure drop using the heat from the cabin of the vehicle.
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DIY Auto Service: Cooling System Operation and Testing
Cooling systems are one of the most important systems on the vehicle including; water pumps, thermostats radiators and hoses. Antifreeze testing and maintenance can extend the life of the vehicle.
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DIY Auto Service: Electrical Switches and Relay Diagnosis and Testing
Electrical Switches and Relays can control the power or ground to an electrical device. The switches can also be used to be an input into a computer system. SPST, DPDT and SPDT are types of switches.
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DIY Auto Service: Permanent Magnet and Hall Effect Sensor Diagnosis and Testing
VSS, WSS, CKT and CMP speed and position sensors are used by the ECM or other computers to keep track of the position and speed of the; Crankshaft, Camshaft, Vehicle Speed and Wheel Speeds.
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DIY Auto Service: ECM PCM Computer Sensor Diagnosis and Testing
A malfunctioning sensor can cause performance problems, turn on the "Check Engine Light" and fail an emission test. Testing a sensor is usually done with a DVOM. Test the ECT, TPS and pressure sensors
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DIY Auto Service: ECM PCM Automotive Computer System Operation
Computer systems operate and monitor almost every system on our vehicle today. Sensors and switches are used for inputs to the computer. Output devices are solenoids, relays, lights and injectors.
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DIY Auto Service: Automotive Lighting Diagnosis and Repair
Incandescent bulbs are being replaced by light emitting diodes or LED's for longer life and much lower amperage draw. The lights are prone to wiring issues that could affect their operation .
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DIY Auto Service: Alternator Diagnosis and Repair
The charging system consists of the alternator and the batteries. The alternator's task is to keep the batteries charged and produce enough amperage to run the vehicle.
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DIY Auto Service: Starter Diagnosis and Repair
The starter uses the battery and battery cables to provide the power to crank over the engine. The starting system can be tested to find a slow-crank or no-crank problem.
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DIY Auto Service: Battery Diagnosis and Maintenance
Batteries are the heart of the electrical system on cars, trucks and boats. The battery is a storage unit that converts chemical energy into electrical voltage. Problems can effect the entire vehicle.
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DIY Auto Service: Basic Digital Volt Ohm Meter (DVOM) Electrical and Electronics Testing
Using a DVOM is an important tool to diagnose vehicles including; batteries, starters, alternators, computer sensors and actuators, injectors, lighting and accessories like ABS and AC systems.
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Using Ohm's Law in Basic Electrical and Electronics Testing in Vehicles
Basic electrical knowledge applies to so many vehical components: batteries, starters, alternators, lighting, sensors, actuators, AC systems, electric windows, and computer systems.
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Michael Thomas has more than 30 years of experience as an automotive and diesel technician. Published author of the textbook and lab manual "Truck and Trailer Systems" by McGraw-Hill. He is a Graduate of Denver Automotive and Diesel College and Joliet Junior College AAS Degree. Mr. Thomas is ASE Certified as a Master Automotive Technician, Master Medium/Heavy Diesel Truck Technician, L1 Automobile Advanced Engine Performance, and L2 Advanced Electronic Diesel Engine Diagnostics. He has been teaching auto and diesel classes for more than 15 years. Mr. Thomas was an Auto/Diesel curriculum developer for Universal Technical Institute (UTI) for three years. At Arizona Automotive Institute, he created the entire 60-week Diesel Program, including course materials, PowerPoint presentations, lab sheets, and quizzes.
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