Mokka Jerking Whistling Acceleration

Got a 2017 Vauxhall Mokka diesel. Check engine light is on and the car jerks when accelerating. Also hear a whistle, almost like a hissing, when I put my foot down. Sometimes stalls at idle and fuel consumption seems higher than usual. Power is definitely down. Suspect a bad boost pressure sensor. Any ideas?

4 comment(s)

Hissing and jerking under acceleration on a diesel often points to a boost leak, could also be the turbo itself, or the air intake. Has the car been scanned for fault codes? A faulty boost pressure sensor could definitely cause these symptoms. Cable or plug connection of the component defective?

I haven't had it scanned yet, but I suspect that the cable/plug of the sensor are the problem. Where exactly should I be looking for leaks or connection issues?

Given the symptoms and your suspicion about the boost pressure sensor, I would check the sensor's wiring and plug first. A visual inspection for damage or loose connections is the first step. I'd advise taking it to a workshop, it really sounds like a bad boost pressure sensor

Cheers. Took it to the shop. Bad boost pressure sensor. They replaced it and cleared the codes. Cost me 95€. Runs like new again.

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