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Check Engine Light On and Car Shakes When Braking
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Introduction
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A check engine light is a warning indicator on your vehicle’s dashboard that illuminates when the engine control module (ECM) detects a problem with the engine or its systems. When this light comes on, it is important to have your vehicle inspected by a qualified mechanic to determine the cause of the problem and make necessary repairs.
In some cases, a check engine light can be accompanied by other symptoms, such as a shaking or vibrating sensation when braking. This can be a sign of a more serious problem that requires immediate attention.
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Causes of a Shaking Car When Braking
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There are several potential causes of a shaking or vibrating car when braking:
* **Warped brake rotors:** When brake rotors are warped, they can cause the brake pads to vibrate against them, which can lead to shaking or pulsating when braking.
* **Glazed brake pads:** Brake pads can become glazed over time, which means they lose their ability to grip the rotors effectively. This can also lead to shaking when braking.
* **Worn or loose brake components:** Worn or loose brake components, such as calipers, pads, or hoses, can also cause shaking when braking.
* **Suspension problems:** Problems with the suspension system, such as worn or damaged shocks or struts, can also contribute to shaking when braking.
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Causes of a Check Engine Light and Shaking When Braking
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In some cases, a check engine light can be accompanied by shaking when braking. This combination of symptoms can be caused by several potential problems, including:
* **Faulty ABS system:** The anti-lock braking system (ABS) helps to prevent the wheels from locking up during braking. A faulty ABS system can cause the brakes to apply unevenly, which can lead to shaking.
* **Misfiring engine:** A misfiring engine can cause the car to shake when braking, as the engine is not providing enough power to the wheels.
* **Vacuum leak:** A vacuum leak can cause the engine to run lean, which can lead to shaking when braking.
* **Transmission problems:** Problems with the transmission, such as a slipping clutch or a worn torque converter, can also cause shaking when braking.
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Diagnosis and Repair
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If your car is shaking when braking and the check engine light is on, it is important to have your vehicle inspected by a qualified mechanic as soon as possible. The mechanic will use diagnostic tools to identify the root cause of the problem and make necessary repairs.
Depending on the cause of the problem, repairs may include:
* Resurfacing or replacing brake rotors
* Replacing brake pads
* Replacing worn or loose brake components
* Fixing suspension problems
* Repairing or replacing the ABS system
* Fixing the misfiring engine
* Fixing the vacuum leak
* Repairing or replacing transmission components
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Conclusion
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A check engine light can be a sign of a serious problem with your vehicle. If your car is shaking when braking and the check engine light is on, it is important to have your vehicle inspected by a qualified mechanic as soon as possible to determine the cause of the problem and make necessary repairs.
