1998 ML320 Fuel Trim Bank 1 & 2 What is the problem? Thanks.
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Joined: Jan 2005
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1998 ML320 Fuel Trim Bank 1 & 2 What is the problem? Thanks.
Hi everyone. I am new here. I am helping my brother with his 1998 ML320 with 110K miles. We are trying to get his Check Engine light off. I pulled the codes with my scanner and it came up Fuel Trim Mal. Bank 1 and then Bank 2 also. I didn't write down the code #'s but I can pull them again if that would help. Is this a Mass air sensor problem or ?. Can it be cleaned or ?. Any info would be appreciated. Thanks.
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Joined: Nov 2001
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From: Philadelphia area
2010 ML550, 2010 E350 4M, 1966 Corvette Convt C2
Could be a number of things. Most generic scanners do not pinpoint the problem but only give a general idea or area where the problem exists. Why don't you take it to a dealer have him diagnose it with the Star diagnostic system and get a correct diagnosis to eliminate guess work and throwing parts at it.
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Joined: Sep 2004
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98 C-230
Hi twilight,
Iv'e heard on the boards about cleaning the mass airflow sensor with throttle body cleaner that says "no residue" on the can. i have never tried this myself so if you go that route you do so at your own risk, but if it don't work now and you have checked for loose wires and vacum hoses, i don't see what it would hurt. pulled the same code on my c-class and it turned out to be a mass airflow sensor. my dealer charged $415 or somthing in that neighborhood, parts and labor. but i am on pretty good terms with my dealer, and iv'e heard other people say they paid more. so a word to the wise - change your air filter regularly. I agree with sosh about throwing parts (esp high $ ones) at something. and the dealer can tell you exactly what's up, but airflow meters are a common problem, they get dirty, they quit working. if you are convinced it's the airflow meter, and can't get it to work, i would take $500 or so in my pocket to the dealer and make one trip.
hope it's cheap, good luck with the car.
Iv'e heard on the boards about cleaning the mass airflow sensor with throttle body cleaner that says "no residue" on the can. i have never tried this myself so if you go that route you do so at your own risk, but if it don't work now and you have checked for loose wires and vacum hoses, i don't see what it would hurt. pulled the same code on my c-class and it turned out to be a mass airflow sensor. my dealer charged $415 or somthing in that neighborhood, parts and labor. but i am on pretty good terms with my dealer, and iv'e heard other people say they paid more. so a word to the wise - change your air filter regularly. I agree with sosh about throwing parts (esp high $ ones) at something. and the dealer can tell you exactly what's up, but airflow meters are a common problem, they get dirty, they quit working. if you are convinced it's the airflow meter, and can't get it to work, i would take $500 or so in my pocket to the dealer and make one trip.
hope it's cheap, good luck with the car.
