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finnhahn2

Megane Poor Start High Consumption

Having trouble with my 2015 Renault Megane gasoline engine. Fuel consumption is up, and it starts poorly. I suspect the throttle valve. Anyone experienced this or have guidance?

Summary of the thread

A 2015 Renault Megane with a gasoline engine was experiencing poor starting and increased fuel consumption. The initial suspicion was a throttle valve issue. A suggestion was made to also consider a defective accelerator pedal module as a potential cause. Ultimately, a mechanic confirmed the problem was indeed with the throttle valve, which was replaced, resolving the issues.

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4 comment(s)

jessicablaze1

Those symptoms definitely point to a throttle issue. Has the engine light come on? Sometimes a defective accelerator pedal module can cause those problems too.

finnhahn2 (community.author)

No engine light, surprisingly. The accelerator pedal module, eh? Can I check that myself, or does it need a diagnostic tool?

jessicablaze1

If there is no engine light, maybe check the car throttle. But I would not exclude a defective accelerator pedal module. Given the symptoms and mileage, I'd recommend a workshop. They can pinpoint the cause and save you potential headaches. Better safe than sorry!

finnhahn2 (community.author)

Took it to a local mechanic, and you were spot on – it was the throttle valve. New one installed and the car is running smoothly again. The total repair cost was 205€, which I think is reasonable.

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RENAULT

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MEGANE