richardphoenix1

Seat Tarraco EGR Issues

I am writing to seek assistance with an issue affecting my 2018 Seat Tarraco, equipped with a diesel engine. The vehicle has accumulated 163325 km. Recently, I have observed symptoms of a potential malfunction within the exhaust gas recirculation (EGR) system. Specifically, the engine exhibits diminished power output, accompanied by the illumination of the check engine light. Furthermore, I have noted the emission of smoke during periods of acceleration, an irregular and rough engine idle, elevated fuel consumption, intermittent jerking during acceleration, and an unusual, pronounced hissing sound emanating from the engine compartment when accelerating. I suspect a defective or jammed EGR valve to be the root cause. I welcome any insights or guidance you may be able to offer.

The 2018 Seat Tarraco with a diesel engine exhibited symptoms such as reduced power, check engine light, smoke during acceleration, rough idle, increased fuel consumption, jerking, and a hissing sound, suggesting a malfunction in the EGR system. The suspected cause was a defective or jammed EGR valve. It was advised to have the EGR valve professionally diagnosed and potentially replaced, as cleaning might not provide a lasting solution. Following professional diagnosis, the EGR valve was confirmed defective and replaced, resolving the issues.

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4 comment(s)

The symptoms you describe do align with a potential EGR valve issue. I had similar problems with my Tarraco – reduced power, rough idle, and the check engine light illuminated. Has the catalytic converter been checked, as a faulty EGR can impact its efficiency? Also, does the hissing sound change with engine RPM? The check engine light could also indicate other issues, such as problems related to diesel engines.

Thank you for your insights. I will definitely have the catalytic converter checked. Regarding the hissing, it does seem to increase with RPM. When you experienced this issue with your Tarraco, was it consistently reproducible, or did it occur intermittently? Also, did you observe any smoke being emitted during acceleration?

The hissing increasing with RPM is very telling, and the smoke points strongly towards the EGR valve. In my case, it started intermittently but quickly became a constant problem. Considering the mileage and symptoms, I would strongly advise having the EGR valve professionally diagnosed and potentially replaced. It is possible to attempt cleaning the valve, but a lasting solution usually requires replacement. I suggest going to a workshop.

I appreciate you confirming my suspicions. I took the Tarraco to a reputable workshop, and they confirmed the EGR valve was indeed defective. The repair, including a new valve and labor, amounted to 355€. The car is now running smoothly again. Thank you for your time and expertise.

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SEAT

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TARRACO