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p0400 replaced egr valve,map sensor, cleaned pipe

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Old 07-18-2017, 09:46 PM
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ml320
p0400 replaced egr valve,map sensor, cleaned pipe

Hello, any help would be greatly appreciated. I have replaced the
egr valve,map sensor, cleaned egr pipe that goes to manifold.
Checked all vacuum lines for leaks checked sel on egr valve working.
Code coming on at between 30 and 35 miles per hours.
Not sure were to go next.
Thanks for any suggestions
Old 07-20-2017, 03:50 AM
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2002 ML 320 & 2006 ML500
Check for constant vacuum at the port in the diagram while the eng. is running.
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File Type: pdf
EGR Function #1.pdf (37.0 KB, 227 views)

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