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By Counterman
Here’s a scenario: A customer comes into your store looking for an engine mount, and they brought the old one in with them. You’re looking the mount over in your hands, and you notice an electrical connector or vacuum port on the bottom side. What could that possibly be for? It’s just an engine mount, right?
An electrical or vacuum connection on an engine mount indicates that it’s an active mount. So, what do you and your customer need to know about these mounts?
The Evolution of Motor Mounts
In the past, engines and transmissions were supported by simple rubber mounts. All engines produce vibrations – also known as noise, vibration and harshness (NVH). The natural flexibility of the rubber would allow the mounts to absorb NVH and prevent them from being transferred into the vehicle cabin. But as engines evolved over the years, motor mounts needed to be able to handle different conditions.
Hydraulic motor mounts were developed to help counteract the NVH that was produced by more modern engines. A non-hydraulic mount typically will feature a number of empty internal voids. These voids are a product of clever engineering, and they allow for deflection/compression in a specific direction when placed under load. Hydraulic bushings fill those empty voids with a fluid. This fluid works like a hydraulic damper, while still allowing for deflection/compression when under load.
The word “hydraulic” might imply that hydraulic fluid or oil is used inside these mounts. However, they typically use a glycol mixture instead. Oil or hydraulic fluid would break down the rubber inside the bushing and cause it to fail prematurely. If you’ve ever seen a radiator hose swell up after it was exposed to engine oil, you know what I’m talking about.
But, engines continued to evolve, and the motor mounts needed to stand up to even tougher operating conditions. Modern engines make more power with less displacement, are more compact than ever before and may utilize cylinder deactivation and/or engine stop/start to help reduce emissions. It’s safe to say that modern motor mounts needed to evolve to absorb NVH and hold up to the added workload.
Active motor mounts were developed in response to this need. Instead of relying solely on the flexibility of the rubber, or the damping effect of the hydraulic fluid, active mounts use vacuum or electrical signals to change the firmness based on operation criteria. Let’s take a look at how these mounts operate, and then we’ll go over a few pointers when talking to your customers.
How Do Active Motor Mounts Work?
Early active mounts used engine vacuum to change the damping behavior of the mount based on operating conditions. High engine vacuum at idle will make the mount more compliant and it will absorb NVH with ease. Then, when the vehicle starts to accelerate, the engine vacuum will drop. This causes the mount to firm up, and prevent excessive engine movement under load.
Electronically controlled active mounts work in a similar fashion, but without using engine vacuum. Electronic mounts will use an electronic actuator, which is controlled by the ECU. The ECU is able to change the firmness of the mount based on its programming and sensor input data. Their main advantage comes in the form of speed and precision. The mount is able to alter its operation at will, without needing to rely on engine vacuum. More advanced electronic mounts are able to generate counter vibrations that help to cancel out the vibrations coming from the engine, much like a balance shaft helps to cancel out vibrations generated by the engines rotating assembly.
Active mounts are found on a number of late-model vehicles, including Audi, Honda, Hyundai, Jaguar, Lexus, Toyota and others. Active motor mounts will be more expensive to replace than non-active mounts, but their benefits far outweigh the cost difference.
Considerations During Service
All mounts eventually will wear out and need to be replaced. Active mounts might crack, rip, tear or sag just the same as non-active mounts will. Hydraulic fluid might leak from the mount, and this is a big giveaway. Failing mounts typically will exhibit one or more of the following symptoms:
• Clunking or knocking noises on or off throttle (as the engine rocks back and forth)
• Evidence of fluid leaks coming from the mounts
• Excessive engine movement
• Increased NVH transferring into the vehicle cabin
• An illuminated “Check Engine” light, and DTCs stored in the ECU
Remember that a leaky hydraulic or active mount could be mistaken for an engine-oil leak. Be sure to advise your customer to thoroughly inspect the vacuum hoses and/or wiring harnesses and connectors for any signs of wear, damage or corrosion. A faulty electrical connection or vacuum hose could trigger a DTC, and the engine mount could be wrongly condemned as the faulty component. Test for power at the vacuum-control solenoid. If power is present, check the fuse and wiring next.
We strongly recommend replacing mounts in pairs at the very least, but ideally, all engine and transmission mounts should be replaced together. If one has failed, chances are high that the others are close behind.
Excessive drivetrain movement can cause other components to wear prematurely. The service life of driveshafts, CV axles and other components can be reduced if the drivetrain mounts are worn out or loose. If they’ve suffered a CV-joint failure, it’s a good idea to take a good, hard look at the engine and transmission mounts. Excessive engine movement also can increase the likelihood of hoses or lines stretching, rubbing or failing. Throttle linkage could bind or stick, assuming that the vehicle uses a cable rather than drive-by-wire. A faulty transmission mount can cause driveline noises, especially when starting off from a stop or accelerating. In extreme cases, the operation of the clutch can be affected as well.
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By Counterman
Standard Motor Products (SMP) has introduced 365 new part numbers for October.
Included in the release is new coverage for more than 107 product categories, and 110 part numbers for 2021 and 2022 model-year vehicles.
SMP’s commitment to providing replacement parts for hybrid and electric vehicles through its Standard and Four Seasons brands is evident in this release. The October new-number announcement added new part numbers for the 2021 Mustang Mach-E, 2017-2011 Nissan Leaf, 2022-2010 Toyota Prius and more.
The addition of more than 130 new sensors, switches, actuators and connectors also expands Standard’s powertrain-neutral coverage.
The Standard ADAS program continues to grow. The October new-number announcement includes new park-assist cameras and park-assist sensors. Cruise-control distance sensors are now available for popular Ford and Lincoln trucks and SUVs, and lane-departure system cameras have been added for the 2021-2019 Ford Ranger and 2016-2015 Honda CR-V.
“The 365 products added to our product line with the recent release are a welcome addition to our ever-expanding programs,” said John Herc, vice president engine of management marketing, SMP. “Once again, Standard Motor Products is proving its dedication to our loyal distribution partners and service providers, supplying them with the parts they need and the quality they trust.”
The Standard turbocharger program expands with each release. This month, three new turbocharger kits add coverage for more than 1.2 million popular Ford vehicles including the 2017-2015 F-150. The program wouldn’t be complete without related parts, which include turbocharger oil lines, turbocharger outlet elbows, turbocharger coolant lines, turbocharger oil-drain tubes, turbocharger wastegate solenoids and charge-air coolers.
Standard’s collision repair program continues to expand with the addition of radiator active grille shutter assemblies for the 2019-18 Ford F-150 and 2018-2015 Edge. Additionally, ride-height sensors have been added for popular vehicles such as the 2020-2015 Cadillac Escalade and Chevrolet Suburban. Power door-lock actuators, trunk-lock actuator motors, and tailgate-lock actuator motors are just a few more of the collision products also included in the release.
Standard has released new transfer-case motors for more than 7 million vehicles. This growing line now covers a multitude of popular applications such as the 2022-2011 Dodge Durango, 2022-2011 Jeep Grand Cherokee and 2016-1999 Ford F-Series Super Duty.
Four Seasons, SMP’s Temperature Control Division, has added 94 new part numbers to its product line, including 19 new hose assemblies covering more than 2.7 million domestic and import vehicles. Popular applications include the 2022-2017 Honda CR-V, 2020-2016 Honda Pilot, 2019-2013 Ford Explorer and 2019-2014 Ford Interceptor Utility.
Also new from Four Seasons are new air door actuators, adding exclusive coverage for the 2019-2009 Toyota Corolla and 2018-2006 Toyota RAV4. Additionally, many heater valves, filter driers, condensers, evaporators, heater cores and more are part of the release, helping Four Seasons to provide technicians with the parts necessary for a complete A/C service.
All new applications are listed in the catalogs found at
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By Counterman
Automotive Parts Associates (APA) announced that Factory Motor Parts (FMP) acquired B&I Auto Supply in Pennsylvania and New Jersey.
This four-location acquisition expands FMP’s eastern footprint and grows its national presence to more than 150 locations in 22 states. B&I is a leading distributor of OE parts including ACDelco, Motorcraft, Mopar, Nissan and Mercedes brands.
“We are excited to bring B&I into the FMP family,” says Todd Heldt, FMP’s executive vice president. “Their strong understanding of the OE business makes them a great fit for FMP. We will continue to build the OE business while expanding their aftermarket offering into the independent service center and fleet side of the business.
Steve Tucker, president of Automotive Parts Associates, added: “Growth is good, and anytime we hear of our shareholders expanding, we’re thrilled, to say the least.”
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By Counterman
Arnold Motor Supply and several aftermarket channel partners raised $40,000 leading up to the company’s 32nd golf and leisure event.
Proceeds from the fundraiser have been donated to
link hidden, please login to view, a foundation helping children with life-threatening medical challenges. ”Tori’s Angels changes the lives of children and families across Iowa and beyond,” said Eric Johnson, managing partner at Arnold Motor Supply. “The son of one of our team members was accepted as the foundation’s 89th sponsored child. Alongside our valued channel partners, we were able to raise enough to help approximately eight more families.”
Tori’s Angels pays for all medical and travel expenses not covered by insurance. Each child is supported from the date of acceptance until his/her 19th birthday.
Channel Partners Recognized
Arnold Motor Supply also recognized key channel partners during its annual event.
BBB Industries received the Vendor of the Year award for the outstanding value BBB brings to the stores and distribution centers.
“We partnered with BBB on a new category this year and saw immediate results,” said Brad Edwardson, vice president of business development at Arnold Motor Supply. “Once inventory was in place, the BBB team kicked off extensive training and forty-two scheduled days of fieldwork. We couldn’t ask for anything more from a partner.”
The company named Brian Bouwkamp and Craig Johnson of The Heartland Group as Reps of the Year. The Heartland Group represents Rotary wheel-service products and related automotive and industrial equipment.
“Our sales pros have the utmost confidence in Brian and Craig,” Edwardson said. “Their customer service on the selling and support side is why we’ve seen triple-digit growth in that category.”
Arnold Motor Supply created a new award this year to recognize partners working alongside the company as it expands its store locations and distribution points. Arnold named Russ Wilshusen of Schnair Sales the Agency Partner of the Year for always going above and beyond, including helping with new-store setups.
“It doesn’t matter the job, Russ jumps in to help,” Johnson said. “He’s everywhere we need him to be and we appreciate his constant dedication to our company.”
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By Counterman
Standard Motor Products announced the addition of 314 new part numbers in its August new-number announcement.
This release covers more than 100 product categories and includes more than 100 part numbers for 2021 and 2022 model-year vehicles.
SMP is committed to providing replacement parts for hybrid and electric vehicles through its Standard, Standard Import and Four Seasons brands. The August NNA added several new components for the 2021 Mustang Mach-E, 2021-2013 Nissan Leaf, 2022-2016 Toyota Prius, 2020-2019 Kia Niro EV, 2018-2016 Audi A3 Sportback e-tron and 2015 Mercedes-Benz B-Class Electric Drive.
This month’s release expands on powertrain-neutral coverage for both Standard and Four Seasons with more than 170 new sensors, switches, actuators and connectors. Included are 23 new power-window switches, as well as shift-interlock actuators, backup light switches, four-wheel-drive actuator connectors and more.
Standard remains dedicated to expanding its ADAS (advanced driver-assist systems) program. The expansion includes 17 new ABS speed sensors, 11 new park-assist cameras and several new blind-spot detection sensors. Cruise-control distance sensors also are now available for popular Ford and Lincoln SUVS, including the 2013-2012 Explorer, Edge and MKX.
“We are proud of the 300+ new part numbers added to our extensive product line,” said John Herc, vice president of engine management marketing, SMP. “In addition to offering the highest-quality products possible, the coverage provided by these new part numbers is an integral part of our mission to provide our dedicated distribution partners and loyal service providers with the parts they need to get the job done.”
Standard’s turbocharger program continues to grow with the release of four new turbocharger kits for more than 2.4 million popular Ford vehicles including the 2020-2015 Transit platform. The release also adds numerous turbocharger-related parts including turbocharger oil lines, turbocharger coolant lines, turbocharger bypass valves and charge air coolers.
Standard continues to expand its collision repair program with the introduction of radiator active grille shutter assemblies for the 2020-2018 Ford F-150. Power door-lock actuators, trunk-lock actuator motors and tailgate-lock actuator motors are just a few of the collision products also included in the release.
In an effort to expand existing product lines, Standard has released three new transfer-case motors for 6.6 million vehicles on the road, including the 2021 Cadillac Escalade, 2021 Chevrolet Tahoe, 2010-2005 Jeep Grand Cherokee and 2019-2007 Chevrolet Silverado 2500.
Four Seasons, SMP’s Temperature Control Division, has added 67 new part numbers to its product line. Included are 31 new air door actuators covering more than 6 million domestic and import vehicles on the road, including the 2021-2013 Buick Encore, 2020-2015 Acura TLX, 2016 Honda Odyssey and 2016-2014 Chevrolet Spark.
Four Seasons also has introduced several new compressors, adding coverage for the 2021-2018 Ford Mustang, 2022-2020 Subaru Outback and 2020 Hyundai Accent and Kia Rio. Additionally, complete A/C kits, hose assemblies, heater cores and thermostat housings are part of the release, helping Four Seasons to continue providing everything technicians need for a complete A/C service.
All new applications are listed in the catalogs found at
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