EGR Valve on 1999 ML320
#12
Yes, you will be able to take just the tube out, but you have to manuver little with it ones it's loose, since it has a bent to it. Loosen it up at the EGR valve first, then at the intake manufold. Watch for the thin gasket between tube flange and manufold. Mine was clogged completely.
#14
No, but over the top of your engine behind the right side cylinder bank next to throttle valve body. Easy task, half hour and you done. Here is picture of my tubing at about 150K miles, it was completely shut closed!
Last edited by mbenz80; 10-21-2009 at 11:28 PM.
#15
thanks, do you recommend buying the new tube and gaskets and be done with it? I see some other members attempt to clean it out with Gummout, not sure if that is effective or not and whether you can really get to all the walls inside that tube that way. I just ordered a new tube and gaskets anyway, for 100 bucks what the heck......which includes me ordering the brake light switch too, to eliminate the left two brake light warnings on the instrument cluster. (or so they say on here...)
#19
Thank you all for the encouragement and pointers. I cleaned my EGR tube and found that it was completely clogged up. The mechanic told me it was going to burn at least$400.00 in my wallet so doing what I best...I decided to muster some courage and did the job myself instead of forking out 400 bucks. My ML320 drives better and with more power to say the least. It took me 3.5-4hours to do it but i did it. My advice to anyone trying to fix their egr tube is to get a 8inch adjustable wrench and and other smaller wrenches for the job. I had to run to my neighbor for the wrench. Follow the instructions from the folks on here and you will be just fine.
After cleaning the tube, I also invester in a pocket scanner to clear the check engine light since autozone said they could not do it for me due to liability reasons.
After cleaning the tube, I also invester in a pocket scanner to clear the check engine light since autozone said they could not do it for me due to liability reasons.
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