Articles by John D. Kelly

One app can turn your phone into a powerful Noise, Vibration, and Harshness (NVH) diagnostic aid.
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A technical look at what’s new and what’s not so new in the latest hybrid transaxles from Chrysler, Toyota, and Ford.
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The hybrid world changed in the last year because of totally new plug-in hybrid powertrain designs from Honda and Ford; other similar ones are being designed by other carmakers.
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I suggest that it is a better idea to tell the customer that you did not check the automatic transmission fluid level because of whatever the reason is for that particular vehicle. 
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Electric motors have a distinct advantage in racing. They make all their power instantly or with the push of a button. Hybrid and electric vehicle (EV) power sources are used in drag racing,
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The following hybrid maintenance items are easily completed, but you must follow the proper procedures to avoid unhappy customers and vehicle damage.
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A customer brings their vehicle into your shop with a vibration complaint; you hesitate to take the job because you know that the success rate of diagnosing and repairing vibration concerns is not very high.
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