matsfire10
LandCruiser diesel performance decline
Summary of the thread
A 2013 Toyota LandCruiser with a diesel engine is experiencing a decline in performance, increased fuel consumption, engine stalling at idle, and smoke during acceleration, with the check engine light on. The suspected cause is a defective mass air flow (MAF) sensor. Cleaning the MAF sensor provided only temporary relief, and a permanent solution involved replacing the sensor, which resolved the issues. It is recommended to have the vehicle properly diagnosed and the MAF sensor replaced if necessary.
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4 comment(s)
matsfire10 (community.author)
Thanks for your reply. I have not yet attempted cleaning the sensor. What were the long-term effects after cleaning the sensor? Did the check engine light disappear permanently?
manuelwinkler1
Cleaning it only gave me a brief respite, maybe a week or two. The check engine light came back, and the symptoms gradually returned. Honestly, after messing with it for a bit, I just took it to a workshop. They confirmed it was the MAF sensor and replaced it. Solved everything. Probably best to get it properly diagnosed.
matsfire10 (community.author)
I appreciate the advice. Based on your experience, I will take it to a trusted workshop for a diagnosis and potential MAF sensor replacement. Thank you for sharing your experience; it has been most helpful. The repair eventually cost me 365€.
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TOYOTA
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LANDCRUISER
manuelwinkler1
Hey, I also drive a LandCruiser, though I can't recall the exact year. I had almost the exact same symptoms a while back – the poor fuel economy was driving me nuts, and the stalling was just plain embarrassing. I remember cleaning the MAF sensor, which helped a bit temporarily, but the light kept coming back on. Did you try cleaning the sensor already?