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Your 1987 300 sdl Mercedes Benz will surge and has a loss off power at low speeds what could be causing this?

1. Idle Air Control (IAC) valve: The IAC valve is responsible for controlling the amount of air that bypasses the throttle plate when the engine is idling. If the IAC valve is faulty that could cause the engine to surge and have a loss of power at low speeds.

2. Throttle position sensor (TPS): The TPS is responsible for sending a signal to the engine computer about the position of the throttle plate. If the TPS is faulty, that could cause the engine to surge and have a loss of power at low speeds.

3. Vacuum leak: A vacuum leak can cause the engine to run lean, which can lead to surging and a loss of power.

4. Fuel injector issues: If one or more of the fuel injectors is clogged or faulty that could cause the engine to surge and have a loss of power.

5. MAF (Mass Air Flow) sensor: The MAF sensor is responsible for measuring the amount of air that is flowing into the engine. If the MAF sensor is faulty, that could cause the engine to surge and have a loss of power.

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