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jakob_zimmermann5

Seat Arosa diesel engine issue

I am writing to inquire about a potential issue with my Seat Arosa, build year 2000, diesel engine. The check engine light illuminated recently, and the engine is now prone to stalling at idle. Furthermore, there is a noticeable reduction in engine power. I suspect a defective fuel regulator. Could this be attributed to a failing high pressure pump?

Summary of the thread

The conversation centers around a Seat Arosa diesel engine issue where the check engine light is on, the engine stalls at idle, and there's a reduction in power. The initial suspicion is a defective fuel regulator, potentially linked to a failing high-pressure pump. A similar issue was resolved by addressing the fuel regulator, and diagnostics confirmed this as the problem, with repairs authorized to resolve the symptoms.

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4 comment(s)

friedrichdrache1

Sounds like a similar issue I had with my Arosa. Check engine light, rough idling, and loss of power. Did you notice any change in your fuel economy before the other symptoms?

jakob_zimmermann5 (community.author)

Yes, the fuel efficiency has definitely decreased lately. I have been monitoring it closely. You mentioned a similar issue. Was it also related to the fuel regulator, or something else?

friedrichdrache1

Yes, it turned out to be the fuel regulator in my case as well. The mechanic told me it's a common issue when the high pressure pump starts to go. Honestly, you're probably best off getting it checked out by a professional.

jakob_zimmermann5 (community.author)

Thank you for sharing your experience. The diagnostics confirmed a defective fuel volume regulator, which they believe is linked to the high pressure pump. Repair cost is estimated at 1510€. I have authorized the repair. It is a steep price, but hopefully this resolves the rough idling, engine misfire and poor fuel economy issues.

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SEAT

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AROSA