Underhood

  • The Chevy Volt is an extended range vehicle that is similar to a hybrid vehicle since it also uses an internal combustion engine (ICE). Although the Volt’s ICE is not used in the same way as a conventional hybrid’s ICE, but rather uses the ICE as a generator to charge the HV battery. 
  • With the introduction of the EcoBoost engine family and its ability to deliver horsepower and torque normally reserved for the largest displacement naturally aspirated engines a V6 F150 with a trailer behind it or a 3 cylinder “hot hatch” now seems perfectly natural. 
  • Electrical power steering (EPS) is a result of eliminating the power steering pump and has drastically changed the way we diagnose and repair steering systems. 
    searchautoparts, dave macholz
  • Even though the carbon compounds that accumulate in the engine are unwanted, carbon is very much a part of the internal combustion engine. This is because the lubricants and fuels that are used in the engine are carbon based compounds.
  • Evaporative emissions (EVAP) systems have been around since the early 1970s. When an emission system has that much tenure on a vehicle, you would think diagnosing problems would be as easy. Creating a great degree of frustration is the over proliferation of unique systems that work in various manners requiring a wide variety of diagnostic approaches. The names and types of systems boggle the mind:
    dave hobbs
  • In this article, I’ll talk a bit about everything from the routine oil change to the diagnostic problems that were caused by the lack of proper maintenance.
  • Fuel trim analysis always is a very interesting subject, especially when it comes to using the fuel trims to analyze drivability problems. Have you ever stopped to think about the fuel trim and what it is telling the technician?
  • Is that 30-pound jug of R134a you bought online REALLY R134a?
    Pete Meier
  • Changes in technology for the “David and Goliath” extremes of engines used in both hybrid passenger cars and light-duty diesel trucks definitely will ruin your day if you don’t know how they operate. 
    dave hobbs
  • Winning races without spending money on performance upgrades is really tough (but not impossible) to do, which is unfortunate for drivers with passion or talent but very limited funds. 
    Motor Age Magazine
  • Ford has been producing the Power Stroke for many years. In mid-1999, it made a significant change in the design by adding additional electronic controls.
  • Hybrid electric vehicle (HEV) nickel-metal hydride (NiMH) battery service or replacement is a topic often written about or discussed in the automotive trade magazines today. 
  • Using the incorrect brake fluid could result in an accident and legal liability.  Wrong transmission fluid can lead to poor shifting or worse regardless whether it’s an automatic or manual box.
  • Some folks will drive vehicles for many a mile with inoperative power steering or brakes. 
  • I thought it appropriate to offer a print primer on scopes and their use as a diagnostic tool. I’m no power user, just an average guy like the rest of you.
    Pete Meier
  • Variable valve timing and variable displacement systems have been on the road and continuously evolving for years. 
    dave hobbs
  • Has this ever happened to you? A customer calls telling you that her car’s Malfunction Indicator Lamp (MIL) is on and she’s worried about what she needs to do.
    Pete Meier
  • The use of pressure transducers in automotive service bays is one of the most exciting discoveries of the 21st century
  • One reason for the price difference in R134a is a practice called “dumping,” which occurs when a foreign company sells a product in the U.S. at less than its fair market value.
    Pete Meier
  • 2003 and up, Dodge vehicles equipped with the diesel engine and the 48RE transmission may have a complaint of a partial engine stall at a stop followed by a sudden engine rpm increase.