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richard_roth9

SantaFe Diesel Choking

Help! My 2015 Hyundai SantaFe diesel is choking! It's done 131k km and now it's jerking when accelerating, the check engine light is on, and it feels like I've lost half my power. The engine even stalls sometimes! Plus, a strong exhaust smell... Error memory isn't empty either. Any ideas?

Summary of the thread

A 2015 Hyundai SantaFe diesel is experiencing jerking during acceleration, loss of power, engine stalling, and a strong exhaust smell, with the check engine light on. These symptoms, along with a 'mixture adaptation' error, suggest a potential issue with the air intake system, possibly a leaking or scorched intake manifold. It is recommended to have a thorough diagnostic check at a workshop to prevent further engine damage.

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4 comment(s)

linastar1

The symptoms you are experiencing suggest a potential issue with the air intake system. Reduced engine power, rough running, stalling, and a strong exhaust smell can often be traced back to problems with the intake manifold. I experienced similar problems with a 2012 BMW 520d a few years back, which ultimately turned out to be a defective swirl flap actuator rod, causing improper air flow. Was there any error code?

richard_roth9 (community.author)

Swirl flap actuator rod? Interesting... So, what error code did your BMW throw? My SantaFe logged a general 'mixture adaptation' error, nothing too specific.

linastar1

The BMW logged a fault code related to the swirl flap actuator, accompanied by codes indicating a lean running condition. Given the 'mixture adaptation' error you have found and the other symptoms, I think your intake manifold could be scorched or leaking. I strongly suggest you take the Hyundai to a workshop for a thorough diagnostic check. Continuing to drive with this issue could potentially cause further engine damage.

richard_roth9 (community.author)

Okay, thanks for the heads-up! I took it to the shop, and you were spot on. Turns out the intake manifold was leaking due to scorching. Cost me 1180€ to fix. Ouch, but at least she's running smooth again.

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HYUNDAI

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SANTAFE