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Fullback Intake Manifold Issue

My 2020 Fiat Fullback diesel is showing intake manifold flap control problems at 69605 km. Symptoms include reduced power, rough running, jerking when accelerating, a loud hissing sound from the engine bay, and increased fuel consumption. Diagnostics suggest a defective switch. Anyone else experienced this with their Fullback?

A 2020 Fiat Fullback diesel is experiencing intake manifold flap control problems, manifesting as reduced power, rough running, jerking during acceleration, a loud hissing sound, and increased fuel consumption. Diagnostics suggest a defective switch as a possible cause. A similar issue was resolved by replacing faulty parts in the intake manifold, leading to improved vehicle performance.

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4 comment(s)

I've had very similar symptoms with my Fullback. Reduced power and a hissing noise definitely sound familiar. Was it like the engine was struggling to breathe properly? Did you notice it more at certain speeds or when going uphill?

Yes, your description aligns precisely with what I'm seeing. The engine does seem to struggle. The issue is more pronounced at lower speeds and under load, like going uphill. How did you resolve your issue?

I didn't manage to fix it myself. I took it to a workshop as soon as I could. They confirmed it was the intake manifold and replaced the faulty parts. Runs like new again now.

Thanks, your experience confirms my suspicions. I'll arrange for professional diagnosis and repair, expecting a similar intake manifold issue. The estimated cost is 465€.

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FIAT

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FULLBACK