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Q: No power

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Cars starts off fine then starts bobing down.when you accelerate the thyroidal the rpms dont go up. If you let the car sit for awile it will run normal for a little while then start doing it again.what could be the problem?

My car has 120000 miles.
My car has a manual transmission.

Hi there:

In most cases, this issue is caused by a dirty or malfunctioning mass air flow sensor, clogged fuel injectors or a throttle body that is dirty or has a mechanical defect of some sort. The best way to correctly have this diagnosed is to have a mobile mechanic come to your location and complete a car is slow to accelerate inspection.

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