How to Avoid Social Engineering Scams
October 1, 2019
How to Avoid Social Engineering Scams One of the worlds worst optimistic views is the common belief that they can not be a victim of hacking, scams, etcetera. At this point, the existence of hackers and scammers is the worlds worst kept secret. Some of the victims are those that do not understand value of […]
Climate Control Diagnostic Process
September 18, 2019
Climate Control Diagnostic Process By John Forro Every Technician needs to have a diagnostic plan. The primary goal of the diagnostic plan is to prepare the Technician to solve the problem at hand. The plan may not work on the first try, but it will create very useful road map. To start, review the customer […]
Compressor Clutch Control Circuit
September 13, 2019
Compressor Clutch Control Circuit From Bob Pattengale Looking at the graph the compressor clutch has a unique relay, it has a compressor control relay that operates in a variety of ways depending upon the application. From the two fuses, one is controlling the coil in the relay (using a 10 amp fuse) that feeds from […]
PCM Modes of Operations
September 5, 2019
PCM Modes of Operations by John Forro Avoiding Typical PCM Pitfalls? Well, the number one solution would be education. The more prepared you are on the subject the easier it is. Don’t forget to do proper research as well. Make sure you dig deep into the brand of car, common issues, wiring diagrams, how the […]
Fixing Lean Fuel Banks
August 9, 2019
Fixing Lean Fuel Banks on a 2002 Chevy Avalanche By John Forro So here’s an excellent case study on bad fuel pumps! A 2002 Chevy Avalanche was towed in for a diagnosis. Using a generic global scan tool, P0codes like P0171 were pulled up. When the P0171 code is pulled from your scan tool it […]
What’s Wrong with Non-OEM CATs?
August 8, 2019
What’s Wrong with Non-OEM CATs? The Stoichiometric graph lists the poisonous gases in details. In this case, why did they come up with 14.71 air-fuel ratios as the store geometric level? This is due to a happy medium between HC (Hydrocarbon), CO (Carbon monoxide), and NOx (Nitrogen oxides). When talking about the catalytic converter, we […]
Diagnostic Procedure with ICE and GDI
August 7, 2019
Diagnostic Procedure with ICE and GDI By John Forro The internal combustion engine has never had a clean design. This is why technology is moving away from ICE as fast as possible. Starting with hybrids, converting to electric vehicles. This will never be a 100% efficient power plant because every one of those piston rings, regardless of condition, […]
January 29, 2019
In this tech tip we cover the vehicle battery voltage during Re-flashing and why it is important to not let the voltage go below 11.5 Volts or above 16.0 Volts. We also cover the importance of having an alternate power source such as a battery sustainer VS a battery charger.
Major Considerations of Re-flashing
In this tech tip we cover the major considerations of Re-flashing. Are you serious about starting to Re-flash modules and do you have the right tools, service information as well as experience to get started?
GM Do’s and Don’ts
June 26, 2018
Running Compression Test
GM Checking Continuity
May 26, 2018
IQA codes Review: Powerstroke 6.7L
May 18, 2018
In this tech tip from the AVI program “LBT-318 – Power Up Your Powerstroke Skills : 6.7”, instructor Tony Salas reminds you of the importance of checking IQA (Injector Quality Adjustment) codes. As Tony points out, making sure that replacement injectors, whether new or rebuilt, are programmed properly is critical.
Parasitic Current Draw
April 6, 2018
In this tech tip from LBT-270 “Parasitic Current Draw”, instructor Dave Hobbs shows a quick and easy way to do a parasitic current draw test and the usefulness of a battery disconnect for long periods of vehicle storage. Join our mailing list! This Weekend Only Get This Course 50% Off
Tech Tip: Lean Density vs Ignition Misfire
March 12, 2018
In this tech tip from AVI course Labscope Diagnostics Version 3.0, AVI instructor Bill Fulton explains how to determine whether a P0300 code is caused by an ignition or lean density misfire by looking at the fuel trim values with your scan tool. Join our mailing list!
Static Fuel Pressure Test
March 8, 2018
In this tech tip from AVI course LS-57 What You Need To Know About Rich P-Code Conditions, AVI instructor Ron Bilyeu points out how a diagnostic path using information services and TSB’s can make short work of rich condition P-codes such as a highlighted PO172 code. Join our mailing list!