RX - 2nd Gen (2004-2009) Discussion topics related to the 2004 -2009 RX330, RX350 and RX400H models

pcv valve(s)? symptoms? and how many of them?

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Old 02-10-20, 12:53 PM
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fabchef
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Default pcv valve(s)? symptoms? and how many of them?

Hi everyone, i was curious to know what are some of the symptoms of a failing pcv valve? i know there is the one right in front below the engine top cover (next to front ignition coils). I took that one out to have a look, it was quite dark, it did rattle lightly. i sprayed it with throttle body cleaner. What other signs that would show it going bad? will it throw a CEL?
also, is there just this one? or another? (seeing as it's a v6 engine not inline 4)? might the other one be the thicker tube that passes under the air intake assembly?
if there are 2, what's the part number? are they the same?
also, do they affect oil consumption?
thanks
fab

Last edited by fabchef; 02-10-20 at 12:57 PM.
Old 02-11-20, 07:24 AM
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mandyfig
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PCV valves are not expensive, replace them for peace of mind.
Old 02-11-20, 02:33 PM
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DennisMik
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There is only one pcv valve. It is part number 12204-31040. If it rattles, it is ok.
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