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#1
11-28-2010, 01:46 PM
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99 E300 Diesel rough idle
My 99 E300 TD with 218K miles idles very rough, hot or cold. When this first started it would smooth out once warmed up. Now it just does it all the time from start up to a rough shut down. I'm looking for suggestions. Here is what I have done to the car in the past year. Last winter I replaced all the glow plugs and installed new Bozio injector nozzles. I also replaced the fuel filter and pre-filter. Then I replaced all of the fuel lines and o-rings except the ones to and from the tank. I purchased these lines all pre-formed with new fittings attached. Just remembered, Due to a check engine light on my dash, I had the engine scanned and it said I had a bad "air mass sensor". I replaced it with a new one but that did nothing to stop the rough idle. But it did take care of the check engine light. LOL! Any ideas on what my problem may be?
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Mike-in-Sky  99 E300 TD, Mostly wifes car. I'm going to steal it from her. 90 GMC 3500, 4X4 dually. My, I dare you to cut in front of me, truck 47 Harley Knucklehead hardtail, Ouch! 65 Harley Panhead 03 Harley Roadking 58 Jenny Last edited by Mike-In-Sky; 11-28-2010 at 02:14 PM. 
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