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#1
03-14-2011, 10:57 PM
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w202 Charcoal Canister Question
Can anyone provide a link to, or spell out, instructions on R&R the charcoal canister/ filter for the EGR system on my '94 C280?
Is this the same canister for the fuel tank overflow? Lately the CEL has shown a code for the purge valve which I found to have a fine black grainular substance in it. I can only think that the charcoal filter/ canister has ruptured some how and is getting junk into the line. The purge valve itself seems to stop the charcoal from getting any further in the system. Thank you for the help!! Crash
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If it ain't broke take it apart and find out why.  1983 300SD, 4 speed 1994 C280 1987 300TD wagon 1996 HD Road King Ride in Peace Eric Peterson, Harley of Macon 
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#2
03-15-2011, 08:13 AM
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There isn't any canister for the EGR system.
What codes are you getting?? like, P0 400 or P0 441
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#3
03-15-2011, 06:52 PM
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Hey Doc.
It's been awhile since I last checked but I think it was PO443. A friend of mine has alldata and it shows this line going to the charcoal canister by the fuel tank. He was suppose to check for R&R directions for this canister but I haven't talked to him since this morning. Any way if you or someone else here has done this before I would appreciate some guidance and directions. Thanks.
__________________
If it ain't broke take it apart and find out why. 1983 300SD, 4 speed 1994 C280 1987 300TD wagon 1996 HD Road King Ride in Peace Eric Peterson, Harley of Macon
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#4
03-16-2011, 08:06 AM
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P0 443 is 100% about the electrical operation of the purge valve. amperage draw
Mounted next to the w/s washer reservoir, has lettering "MOT" on the top of it.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#5
03-16-2011, 10:26 AM
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And that is where I am getting charcoal. It has to be coming from the canister in the back fender well that the line connects to.
Can you supply me with instructions to R&R the canister? Any tips? Than you.
__________________
If it ain't broke take it apart and find out why. 1983 300SD, 4 speed 1994 C280 1987 300TD wagon 1996 HD Road King Ride in Peace Eric Peterson, Harley of Macon
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#6
03-16-2011, 03:31 PM
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Charcoal Canister is under the LF fender, removal of the inner liner is required.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#7
03-16-2011, 10:01 PM
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I was hoping someone on this forum had some experience or knowledge of removing and replacing the charcoal canister located in the back fender well by the fuel filler tube that seems to be the culprit. The purge valve is not my worry, I can get another one. The PO443 code is what led me to find the loose charcoal in the first place. I am concerned about the loose charcoal in the vaccum line that seems to be coming from a charcoal canister somewhere.
Thanks. Damnit Jim! I can't pull anymore teeth without a license!!
__________________
If it ain't broke take it apart and find out why. 1983 300SD, 4 speed 1994 C280 1987 300TD wagon 1996 HD Road King Ride in Peace Eric Peterson, Harley of Macon
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