On a hybrid vehicle’s air conditioning system that utilizes a high voltage electrical compressor, can only the oil specified by the vehicle manufacturer be used in the compressor or is PAG oil acceptable for use in an electric vehicle’s compressor?
It’s like torquing a bolt, but with an extra twist.
On a hybrid vehicle’s air conditioning system that utilizes a high voltage electrical compressor, can only the oil specified by the vehicle manufacturer be used in the compressor or is PAG oil acceptable for use in an electric vehicle’s compressor?
Pete Meier explains how vehicle usage and oil/filter quality should affect your maintenance schedules.
Technician A is preparing to recover the refrigerant from a customer’s vehicle. What are the steps he should take when performing this service?
Pete Meier explains why these single-use bolts should always be replaced for safety and proper function.
Technician A completed a compression test, noting high readings suggest an exhaust restriction, while Technician B says the test checks volumetric efficiency.
Do you lubricate the threads on spark plugs before installing them? Should you? Pete Meier explains the finer points of spark plug lube application for best results and OE service procedure compliance.
All four cylinders are below specification by about the same amount. After performing a wet compression test, values remained unchanged. What could cause this condition?
Did you know that a modern fuel injection system can fire off multiple sprays in the same time it takes for a spark to jump across a plug?
Technician A and Technician B are discussing ways to use fuel trim as a troubleshooting aid. Technician A says that fuel trims that are correcting for a lean condition at high RPM and load conditions indicates a problem in fuel delivery. Technician B says that this condition is caused by a vacuum leak.
Pete Meier explains how a dial indicator is necessary for a true wear check.
Technician A is diagnosing a misfire. He states that a misfire is caused by a fault in the ignition system and that new plugs and coils will repair the problem. Technician B says that a misfire is detected when the ECM detects a variation in crankshaft speed.