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3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

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Old 03-24-2010, 07:00 AM   #1 (permalink)
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2001 e46 318i - dirty idle regulating valve

I've had to strip the throttle body because it was seized - been sat in the back of the car since last summer. That's all clean and working now, however, the idle regulating valve looks a bit gummed up inside. Can these valves be cleaned? if so what is the best method? Mine looks as though it can be dismantled by removing the roll pin that appears to hold or lock the 2 main parts together, anyone know if this is possible?

Thanks.
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Old 03-24-2010, 07:27 AM   #2 (permalink)
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you don't need to go as far as dismantling the part...

get yourself a can of brake or carb cleaner and clean out the gum and deposits as best u can... and re-install.

that is all you need to do.
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Old 03-24-2010, 10:55 AM   #3 (permalink)
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I tried the throttle body cleaner but the valve was still sticky so I dismantled it and did a thorough clean. Turns out the problem was not so much the muck inside the valve as the rust build around the armature, which you can only get to by dismantling the unit.

Anyway once apart I derusted, cleaned, soaked it in silicon oil, put it back together and whey hay it seems ok. If it doesn't work properly it'll be off down the scrappies for a second-hand one, coz new they're serious bucks.

Thanks for the help anyway.
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