Car losing power

As my car wasn’t getting the power it should be getting I got a mechanic to put a new egr valve and air flow sensor in, but I’m still getting some sort loss of power even after the new parts were put in. When I drive the car it sometimes lunges and looses power. Any idea what could be the problem?

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Sojournersoul · M

You need to get your throttle body cleaned. They get really dirty on the inside and will cause that, had it happen and i cleaned it. Ran like new again.

supersnipe · 61-69, M

@Sojournersoul Throttle bodies can get dirty - I had the one on my Mazda (2.0 V6) cleaned up once and it improved the drive. Also worth checking are induction leaks - I had a problem with a bit of plastic trunking splitting, and this made the car impossible to drive smoothy at low speeds.

On this engine it's the plastic hose with the 'concertina' in it, between the air cleaner and the induction manifold. and, cruciually, after the mass air flow sensor. This might be worth checking for splits.