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Pete
Pete, Mercedes Mechanic
Category: Mercedes
Satisfied Customers: 29116
Experience:  Over 15 years experience as a Mercedes dealer technician
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Ml320: My 2008 ml 320 starting running very sluggish, very

Customer Question

My 2008 ml 320 starting running very sluggish, very slow to accelerate and also difficult to maintain speed going up hill. Already changed fuel filter. Any more ideas?
Submitted: 2 years ago.
Category: Mercedes
Expert:  Pete replied 2 years ago.
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
Two other common components that will cause this fault here besides the fuel filter is a restricted exhaust component like a restricted resonator or catalytic converter needing replaced or an issue with the mass air flow sensor sending an incorrect engine air flow reading needing replaced.
I would have these checked to see if either are the cause here and once the affected component is located it will need replaced to correct the issue from there.
Thanks Pete