Scott "Gonzo" Weaver, Author at UnderhoodService - Page 3 of 10
Keys: What Are They Good For?

As time marches on, certain things of a mechanical nature will be lost to electronics. Fewer cars are being manufactured that still have keys. Some only have a key fob and no metal or brass backup at all. Soon you won’t even need those fobs, either; everything will be programmed and controlled by your smartphone.

keys featured
Why Does It Happen?

There are so many questions that need to be answered in our business. Some can be answered with a little background in engineering or technical information. Some can only be answered after a few visits with your local shrink. Other questions are just left in limbo for eternity.

Lifetime Warranties: The Woes Of Discount Parts

There are warranties, and then there are lifetime warranties. Some people won’t buy anything unless it has a substantial warranty attached to it. My dad was one of those guys. It didn’t matter what it was as long as he could get a warranty with it, and he would be as proud as a peacock whenever he got the chance to take advantage of it.

Gonzo: Communication Is Key To Knowledge

Are there things mechanics keep to themselves and not tell other mechanics? I hope not, but I’m sure that even doctors and lawyers have a few secrets they’re not sharing with each other. The big secret is that there really are no secrets. What it really comes down to is knowledge.

GM HVAC Door Actuator Motors: Operation And Calibration

There are several types of electrically driven actuator motors used in today’s GM cars, and they all function differently. Keep reading for operation tips.

Car Diagnostics And Testing: Proper Shop Procedures

Close isn’t good enough if you want to establish credibility in your local market. Today’s professional technician can’t just grab a component hanging from a branch of the proverbial parts tree and see if that will fix the problem. It requires a diligent effort of testing and diagnostic time to analyze the maze of electronic data.

diagnostic testing procedures
Lost and Found: When Good Tools Go Missing

There are those occasions when a phone call or a complete search of the shop doesn’t yield any sign of a lost tool. For the most part, you can mark that tool down as “gone for good,” lost to that place where wayward nuts, bolts and tools always end up.

Understanding EVAP: From The Tank To The Intake

Modern EVAP systems are selective when they vent vapors into the engine. The PCM will select the right engine temperature and throttle position to purge the system. They are also very selective when system checks are performed. A computer is constantly monitoring the results of the commands sent to the valves with the help of sensors mounted in the tank and EVAP canister.

Gonzo’s Toolbox: ‘Wanna Be’ Technicians

There’s one situation all professional automotive technicians have had to deal with from time to time, and it involves the home-grown garage guy who just so happens to own a couple of ratchets, a repair manual and a broken-down car. Some of these connoisseurs of the all-knowing repair manual skim through sections without truly comprehending them.

Men in garage with semi-truck
Gonzo’s Toolbox: Abbreviations LOF!

One of the techs came into the office some time ago to explain some crazy readings he was getting after hooking up to the DLC with the NGS. As he was explaining the problem, a very inquisitive customer was sitting at the counter waiting for an LOF. The technician and I discussed the test results and worked out a way to narrow down the problem even further. The whole time the customer was intently listening to every word of the conversation about MAFs, TPSs, MAPs, ACTs, PCMs and CTSs.

Texting abbreviations
Think Before You Grab The Scanner

Scott “Gonzo” Weaver tells the story of what can happen when you forget the basics as a technician.

Zombie Cars

Way back, when we used points and condensers, cars didn’t need brains, but that all changed in the mid-1970s with some imports and pretty much on everything else by the time the ‘80s came around.