Seat Altea Engine Problems

I am very frustrated. My Seat Altea (2004, gasoline engine, 130659 km) is showing some alarming symptoms. The check engine light comes on sometimes, and the car jerks violently when accelerating. I also hear a whistling noise, almost like a loud hissing, during acceleration. Sometimes, the engine even stalls when idling. Fuel consumption has increased noticeably, and engine power is clearly reduced. Could a faulty boost pressure sensor be the culprit? Perhaps a defective cable or plug connection? This is impacting the turbo system.

4 comment(s)

I own a Seat Altea as well, and I think I had a similar problem with the turbo system. The engine light came on, and I experienced some power loss. I am not 100% sure, but could it be related to the turbo boost? Did you notice any unusual noises?

That's interesting. Now that you mention it, there's a faint whistling and hissing sound when accelerating. What was the solution in your case?

Yes, the whistling and hissing sound sounds very familiar. If it is indeed the turbo boost, then it is very similar to the issue I had. I am not an expert but it could be a boost leak. I would strongly recommend visiting a workshop to have it properly diagnosed.

Good news, the problem is fixed! The cable connection to the boost pressure sensor was faulty, just like I thought. After replacing the connector, the engine runs like new. The repair cost 95€. Thanks for the help!

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