Technicians

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The Mobile Air Conditioning Society (MACS) Worldwide will provide a free Section 609 certification class for up to 100 professional automotive technicians on Friday, Feb. 16 at 1 p.m. EST at the Caribe Royale Hotel and Convention Center 8101 World Center Drive Orlando, FL....
Electrical troubleshooting is, for many of us, a challenge. I think it’s similar to a pilot who flies in VFR (Visual Flight Rules) conditions versus one who flies in IFR (Instrument Flight Rules) conditions. The VFR pilot relies on outside references to maintain...
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Years ago we troubleshot a Grand Prix that had run just fine until the owner’s cousin had changed the intake manifold gasket and afterwards it was skipping dead on cylinder 2, so she asked if we could have a look at it. This was an engine skip – how hard could...
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Nearly 20 years ago, Toyota Motor Sales introduced a vehicle that would change the way the world saw hybrids. With more than 3.5 million units sold, the fourth generation of Prius seeks to build on a legacy while ushering in a new generation of Toyota hybrid technology....
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If you are like most people I know, you have not paid much attention to what has been going on with hybrid vehicle powertrains over the years; why would you? Hybrids have been a very small percentage of overall vehicle sales, especially with gasoline prices being “so...
In electrical system design, testing and evaluation of operating conditions there are two circuit parameters of utmost importance to consider - voltage and electron current. Both of these must be measured under all conditions to validate the proper operation of an...
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High voltage drive systems aren’t really new anymore; after all they’ve been on the market in the United States since late 1999. Shortly after those first hybrid vehicles entered the market, specialized hybrid vehicle training started being offered to the...
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My wife often comments that I have book sense but not a lick of common sense. I guess she’s right, to an extent. I learned a long time ago that feigning ignorance was a surefire way of getting out of those “honey-do” items I really didn’t want to do...
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I hate working on diesels. A few years ago while working as a diagnostic tech for a mom and pop repair shop I was introduced to a landscaping company’s fleet of not-so-well cared for 6.0 Powerstroke diesel trucks. I had little to no prior diesel experience. These...
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I often see the Nissan Murano, not because it is prone to problems but because it is a popular and reliable vehicle. Here are a few of the more interesting ones I’ve run into. Nissan Number 1 The first one is a 2007 Nissan Murano with 73,443 miles on it. It has a V-6...
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Pushing through a diagnosis with a plan of attack is the best course of action to keep you focused and making diagnostic decisions accurately and efficiently. These decisions should be based on your test results, whenever possible. Although, sometimes instinct and gut-based...
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I was called to a shop early in the summer for a complaint of no air conditioning operation on a 2010 Nissan Sentra with a 2.0 Liter engine (Figure 1). The shop had done all the preliminary checks such as A/C pressure tests and scanning the A/C system for trouble codes....
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One day I got a very terse call from the vice president of the company where I was responsible for fleet maintenance back in the late ‘70s. It seemed that an almost new (1978) Dodge one-ton we had was pointed at the gate with a gooseneck trailer behind it and...
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I recently brought oil analysis to my automotive repair shop. I’ve learned quite a bit about applying oil analysis to my daily operations, and thought I would share my experience. Oil analysis is used by the vast majority of organizations operating fleets of vehicles...
A typical cause for burning oil, is that the inside of the engine gets dirtier and dirtier in the course of time. The piston rings no longer seal properly, resulting in dirty combustion, which produces even more deposits. A thorough cleaning can stop high oil consumption...

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