Electrical

PCM vs ECM vs ECU vs TCM (What’s the Difference?)

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Before vehicle computers were invented, cars and trucks used a system of mechanical and pneumatic devices to manage systems like valve timing and idle speed. Now, modern vehicles have a posh system of sensors and actuators connected to computers which enable the vehicles to perform well and efficiently. These electronics are confusing enough without adding … Read more

3 Symptoms of a Bad Starter Motor (and Replacement Cost)

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For automobiles, the electric starter is a boon to easily getting on the road. It was invented by Clyde J. Coleman and first patented in 1903. Coleman soon sold his patent rights to Delco which was subsequently absorbed by General Motors. When Delco joined GM, the brilliant engineer, Charles Kettering, came along for the ride. … Read more