Mine was insanely clogged on the intake plenum side, I would not have even attempted to clean. Just replaced.

Ignore the OP's nonsense ramblings, just read the information from Duke -

http://www.peachparts.com/shopforum/tech-help/376014-500-sec-failed-smog-now-odometer-not-working.html

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]