sophieweber1
Seat Leon gearbox issues
Summary of the thread
A 2002 Seat Leon with a gasoline engine is experiencing gearbox issues, including slipping, unclean shifting, and grinding noises, accompanied by the check engine and transmission indicator lights. The error memory suggests a torque converter issue, which is confirmed by a transmission specialist as the cause of the problems. The solution involved replacing the defective torque converter, resolving the issues and restoring smooth operation.
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4 comment(s)
sophieweber1 (community.author)
The grinding is mostly noticeable between 2nd and 3rd gear. The check engine light and transmission indicator light lit up at the same time after I felt a big shudder and loss of power. Could it be anything else besides the torque converter?
thomasfuchs1
Sounds like a classic torque converter failure, especially with the grinding between 2nd and 3rd and the sudden shudder. That lock-up clutch in the converter is probably toast. Given all the symptoms and the error code, it’s highly likely the automatic transmission converter is defective. I'd recommend taking it to a reputable transmission specialist to confirm and get it sorted. It's not a cheap fix, unfortunately.
sophieweber1 (community.author)
Took it to a transmission specialist and you were spot on. Torque converter was indeed the culprit. Ouch, 2120€ later, it's fixed, but at least it's running smoothly again. Thanks for the help!
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SEAT
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LEON
thomasfuchs1
Whoa, that sounds rough! A failing torque converter can definitely cause those symptoms. The engine surge especially points towards the lock-up clutch malfunctioning. Does the grinding noise happen in all gears or just some? Also, did the check engine light come on before or after you noticed the other issues?