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#1
10-21-2005, 11:55 PM
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Rough Idle
<
What can I check?>> Take it to AutoZone, Checker, or ADvance, and they will pull the code for free. no obligation. The book of generic codes is the same for all vehicles under OBD2, in effect since 1996, and they will look it up for you. I am guessing a small vacuum leak. Jim in Phoenix 
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#3
10-23-2005, 02:59 PM
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I brought it to Advance Auto. They pulled the code, and as suspected, "EGR flow". I did a search here and found that these engines seem to plug up the EGR tube. Tomorrow I'll yank it off and see what's up. I'll also pull the EGR valve - its probably crudded up and needs a good cleaning. Hopefully, that will fix the problem. I'll let y'all know what I find.
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Thank You! Fred 2009 ML350 2004 SL600 2004 SL500 1996 SL600 2002 SLK32 2005 CLK320 cabrio 2003 ML350 1997 C280 Sport
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#4
10-24-2005, 07:23 PM
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Pulled the EGR valve today. There was carbon build up around the seat, plunger, and seat chamber. The valve could not close becuase it was so fouled up with build-up. Cleaned it all up with dentist's tools. The engine hasn't idled this nicely in a long time. I guess it has been getting worse over time and I simply didn't notice it.
All fixed - thanks for the advice!
__________________
Thank You! Fred 2009 ML350 2004 SL600 2004 SL500 1996 SL600 2002 SLK32 2005 CLK320 cabrio 2003 ML350 1997 C280 Sport
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