I cleaned the one on our 3S-FE after reading this thread sometime ago.
When I removed it I discovered it was so clogged with crap, the shaft wouldn't even move.
I actually soaked ours o/nite and cleaned it the following morning. ( I used carby cleaner)
The thing that prompted me to do it was the way the car was running with A/C on. Or should I say, nearly stalling.
Anyway, I'd checked everything else tied in with the A/C and all was normal.
I also gave the Throttle Body a good clean while it was off too.
Made the world of difference!!
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