Is it possible to have this many codes!!!? - Mercedes-Benz Forum

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post #1 of 4 (permalink) Old 04-12-2010, 12:36 PM Thread Starter
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Vehicle: ML320
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Cool Is it possible to have this many codes!!!?

Hi All

Im a new member with a ML320 just given to me with running problems (1998 ML320 V6 190000 miles on the clock). The symptoms are:

1. Rough very lazy reving
2. Poor Acceleration - sometimes no more than 5mph
3. Turn her off and restart her after a minute then she runs ok with no real power or acceleration not passing 75mph and now and again losing power and cutting out

ODBII codes read as follows



From what i have read the p0170 and p0173 are pointing towards the MAF - i have a new one ordered in as well as new plugs and ht leads.

the p03** codes are misfires, showing on all cylinders accept no.6.

so the question is can these be caused by the maf coils plugs and leads or could there be anything else that could cause this?

thank you for reading

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post #2 of 4 (permalink) Old 04-12-2010, 06:48 PM
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Don't know about those codes; how's your fuel filter?

2005 S55
2003 ML350
2002 C240
1997 C280 Sport
1991 300SL
1986 190e 2.3 16V (2)
1968 W30 442
1988 46' Cougar US1 with Triple blown 572s
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post #3 of 4 (permalink) Old 04-12-2010, 07:55 PM
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Change the MAF, reset the codes and see how it runs.
My son generated 10 codes with bad MAF on his ML320.
You are still shy to his record.
Welcome to the forum
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post #4 of 4 (permalink) Old 04-13-2010, 03:27 AM Thread Starter
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thanks for your replies guys

will let you know after the change over - fuel filter was replaced 1 month ago so only other suspect is the pump other than the maf at the mo.


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