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How do fuel injectors work? In this example I'm showing you the inside of a Powertrain Control Module or PCM for short. Inside of the PCM you'll see circuit boards that are filled with drivers, transistors, etc. With this PCM, we try our best to expose the damage on the circuit board and how it's affecting the operation of the fuel injectors.
What we see is leakage at one of the capacitors and damage to one of the fuel injector drivers. In this case, the PCM was allowing two injectors to open at the same time causing poor performance and fuel mileage.
Before we replace the PCM we inspected each injector for integrity and performance. We also tested for any high resistance levels to see if the injector coils were not shorted as well.
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Buckley's Auto Care
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