W119 EGR Code HELP!!! - Mercedes-Benz Forum

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post #1 of 3 (permalink) Old 05-20-2012, 10:48 PM Thread Starter
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Vehicle: 1994 E420/W124/M119 White/Creme, 226K
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Red face W119 EGR Code HELP!!!

I have a 1994 E420/124/W119 with 226k. Check engine light comes on intermittently, had Mechanic pull the code and tells me its EGR. He pulled the Egr valve, Cleaned and tested it, NOT the problem . Mechanic said the Intake Manifold may be getting clogged. Mechanic said NO Easy clean for this Car, Must pull the Intake Manifold. OK, So i pull the Breather assembly to see how difficult a job i am in for. Not the easiest ,I Understand. I see how the intake manifold attaches to the Plenum. One of the O-Ring seals between the Manifold and the Plenum is oily/dirty. ONLY ONE. The rest are squeaky clean. Can anybody give advice why this may be. The car is fuel injected and the injectors are located at the heads. I cant see this as being fuel and if the O-Ring seal is bad then it should be drawing air in or do i have the wrong information? The Mechanic also said that when the Vacuum line was disconnected the car should at minimal stumble or even die. He tells me she purred like a kitten. Can the Intake be cleaned without removal? Why is there oil/dirt at Plenum Seal? and could this be causing the EGR Code? No doubt i will have to pull the Intake. Is there any other advice for parts that should be replaced. Any and all advice would be greatly appreciated.
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post #2 of 3 (permalink) Old 05-21-2012, 03:36 AM
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post #3 of 3 (permalink) Old 06-04-2012, 02:26 PM Thread Starter
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