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 Post subject: EGR Air Flow Control Valve
PostPosted: Thu Sep 08, 2022 4:10 pm 
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Joined: Mon Apr 30, 2007 11:54 pm
Posts: 111
Location: Rockville, Maryland
Looking for a used in good operating conditions an Air Flow Control Valve for a 2005 CRD
PIERBURG # 39002015F.
Not available new in USA, found several in Europe but they do not ship to USA.

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 Post subject: Re: EGR Air Flow Control Valve
PostPosted: Fri Sep 09, 2022 12:04 am 
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Sergio del Castillo wrote:
Looking for a used in good operating conditions an Air Flow Control Valve for a 2005 CRD
PIERBURG # 39002015F.
Not available new in USA, found several in Europe but they do not ship to USA.

Should be plenty of them around since many have removed their EGR parts.
Be careful though, the gears in the operator on the side of the FCV are notorious for stripping and hanging up causing the butterfly plate in it to limit air flow and boost from entering the intake manifold.
Just curious why you need one; if it is defective, it can easily be disabled by removing the butterfly plate out of it. Only two small torx screws holding it to the shaft. Only takes about 15 minutes to take the FCV apart and remove the butterfly plate and then put it back together. You don't even have to take it off the engine to do this. :D

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 Post subject: Re: EGR Air Flow Control Valve
PostPosted: Fri Sep 09, 2022 1:18 pm 
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Joined: Mon Apr 30, 2007 11:54 pm
Posts: 111
Location: Rockville, Maryland
Long history short:
Bought the CRD new Feb. 2005, now 260K miles. Some 4x4 wheeling (skid pans and dif. air operated lockers, front and rear), some city commuting, lots of highway miles, (driven from MD to WA several times, pulled trailer from St. Louis, MO to MD several times.). Stock engine with Provent added in 2009, drains directly to the crack case via the turbo oil return tube with a check valve. This solved the issue of clogging the EGR valve.

Last couple of years, an occasional P0299, checked the vacuum tubes and found them OK, checked the relay and also found OK. Just noticeable light lack of power for about 1 to 2 minutes during acceleration from a stop light once in a while. Last year added occasional P0401, mostly after being parked for a long time. Replaced EGR valve, no change. This used to be an constant issue before the Provent.

My diagnostic: If the Flow control valve does not open completely, causes low boost condition,and if it opens complete all time, causes insufficient flow (EGR). Thus, removing the butterfly disk will solve one issue but not both.

Why to replace it ?. Eliminate the continuous CEL on the dash board. Do not plan to have a re-tune or other modification done to the ECM.

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 Post subject: Re: EGR Air Flow Control Valve
PostPosted: Fri Sep 09, 2022 1:20 pm 
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Joined: Mon Apr 30, 2007 11:54 pm
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Location: Rockville, Maryland
Sorry: CRANK CASE not "crack case"

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