The June issue of ACtion magazine is out!


By Dave Hobbs, MACS Technical Correspondent

Name That Hybrid Water Pump

While virtually every HEV (hybrid electric vehicle) has an ICE (internal combustion engine) along with one or more high voltage electric motors, not every one of them circulates the coolant in their engines the same way. Take Toyota for example. Up until its Prius line started using a 12-volt electric water pump (Figure 1) in 2010 and newer (Generation III) models, their little belt-driven water pumps (Figure 2) were prone to wear out around 120,000 miles. You’d hear a little rattle, then it would get a little louder, and before you knew it your customer’s water pump drive belt was almost shredded into smithereens. Call the parts store, and get a replacement water pump on the way to your shop, right?

Not so fast! When you call or go online seeking a new water pump, make sure you know what to order. (Read More)

About macsworldwide

Mobile Air Conditioning Society (MACS) Worldwide Founded in 1981, MACS is the leading non-profit trade association for the mobile air conditioning, heating and engine cooling system segment of the automotive aftermarket. Since 1991, MACS has assisted more than 600,000 technicians to comply with the 1990 U.S. EPA Clean Air Act requirements for certification in refrigerant recovery and recycling to protect the environment. The Mobile Air Conditioning Society (MACS) Worldwide’s mission is clear and focused--as the recognized global authority on mobile air conditioning and heat transfer industry issues. www.macsw.org
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