New EPA regulations will require new vehicles offered for sale starting in the 2021 MY to use a refrigerant other than R134a. OEMs have also been incentivized to use these alternatives before the phase-out deadline as they can earn emissions credits by making the change early.
Performing a VE calculation on a boosted engine is not much different that doing so on other engines. A known good 2012 Mini Cooper S with a 1.6 liter turbocharged engine will be used to illustrate the technique.
So, what damages the cat? Well, engine misfires can lead to overheating and potential meltdown of the substrate. It can be contaminated by silicone sealants (or liquid spray), coolant leaks into the combustion chamber that coat the strata, excessive oil steam blow, and more
During NACE Automechanika 2017 Eric Ziegler in his class, “Essential Diagnostics - The Steps You Need To Take In Tackling Every Drivability and Electrical Concern,” outlined his thoughts on what makes a good diagnostic process – a process that can be applied to any troubleshooting challenge you face.
This article will describe some of my recent experiences with Asian vehicles, and what I did to diagnosis and repair them. Let’s start out with a 2009 Subaru Forester 2.5 DOHC turbo that came in with a complaint of low power.
OBD ports were designed for diagnostics, not continued use with telematics units. What options are currently available in the aftermarket and how could using these potentially cause unanticipated concerns?
I always try to have a logical approach to diagnostics whenever I am working on something that I have very little firsthand knowledge or experience in working on. I am always harkened back to elementary school science class, when I was first introduced to the Scientific Method.
Even though newer vehicles can be complicated to diagnose and repair (and very expensive to misdiagnose) it’s still very possible—and often profitable—to do the work yourself rather than send it along to the dealership to be fixed.
Many of the hybrid vehicles I have worked on do not average anywhere near the suggested EPA ratings. One such example is a 2008 Toyota Prius that only averages 30.5 when it should be averaging about 46 mpg.
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