Had a cycling buzzing noise just behind the alternator - figured it was the EGR solinoid. The service advisor told me it was the 'throttle control module' that was bad, but the part they ordered was 5166555AB, which I am pretty sure is an EGR assembly. Hmm.

On the positive side, he said it would be in tomorrow.

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2005 Limited CRD

What you are describing is the noise the EGR flow control valve makes after the engine has been turned off. It looks like a "throttle control module" to the non-diesel. It's function is to close the butterfly valve shut when you turn the key to the off position to starve the engine of air so that it quits quickly rather than "Dieseling" the engine to a halt.

Prior to the EFI days, Dieseling was known to happen to an engine that would have a hard time stopping after the key was shut off on the ignition. The engine would sort of stuttuer to a stop.

There are three separate components with the word EGR in it.
1)EGR flow control valve
2)EGR
3)EGR Cooler

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2005 Black CRD Limited w/105,000 miles
Mann Provent 200, Airbox Mod, ORM Mod
New 545RFE, TC & Redesigned pump @ 25,020 miles
New EGR Flow Control Valve @ 25,020 miles
New Transfer Case input/output seals @ 32,787 miles
SEGR Kit @ 52,000 miles
SunCoast TC and Transgo Shift Kit @ 52,000 miles

Other name for EGR by some = _)(*&(*&%%^#$!@

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91 MB 300D 2.5L Turbo. Her's

05 MB E320 CDI. Mine

Yup, I'll second that.

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2005 Unlimited (LJ) Rubicon w/ 5.5" of total lift
Flat Fenders made by http://www.jpfaboffroad.com/

"Democracy is two wolves and a lamb voting on what to have for lunch.
Liberty is a well-armed lamb contesting the vote." - Benjamin Franklin, 1759

Other name for EGR by some = _)(*&(*&%%^#$!@

Too funny!

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2005 Limited CRD

Exhaust Gas Recirculation

Expect Getting Replaced

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06.5 Jetta TDI PKG 2 - Silver/Anth