ML320 starting problem
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Joined: Nov 2017
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ML 320 - 1999
ML320 starting problem
I'm having a starting problem with my ML 320 (1999); initially it started losing power at acceleration over 60km/h, it will occasionally pick up speed or jack until it returns to normal and characterized by hard start during the day but surprisingly started easily in the morning.
Then one day it cut off while idling and to this day never started and only cranks.
These are the error codes that came out P0156-O2 SENSOR CIRCUIT BANK 2, P0161 02 SENSOR HEATER CIRCUIT BANK 2 SENSOR 2, P0110- INTAKE AIR TEMP. SENSOR 1 CIRCUIT, P0300 - RANDOM MULTIPLE CYLINDER MISFIRE DETECTED, P0301 CYLINDER 1 MISFIRE DETECTED, P0302 CYLINDER 2 MISFIRE DETECTED.
I was planning on buying a new MAF sensor, Crank Shaft sensor and Oxygen sensors which are four in the vehicle. Please advice me on getting it fixed. (Spark plugs have recently been replaced.)
Thanking You.
Then one day it cut off while idling and to this day never started and only cranks.
These are the error codes that came out P0156-O2 SENSOR CIRCUIT BANK 2, P0161 02 SENSOR HEATER CIRCUIT BANK 2 SENSOR 2, P0110- INTAKE AIR TEMP. SENSOR 1 CIRCUIT, P0300 - RANDOM MULTIPLE CYLINDER MISFIRE DETECTED, P0301 CYLINDER 1 MISFIRE DETECTED, P0302 CYLINDER 2 MISFIRE DETECTED.
I was planning on buying a new MAF sensor, Crank Shaft sensor and Oxygen sensors which are four in the vehicle. Please advice me on getting it fixed. (Spark plugs have recently been replaced.)
Thanking You.
Last edited by Kabo Falco; Nov 30, 2017 at 01:21 AM.
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Joined: Oct 2011
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From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
It appears that you are having a fuel issue: fuel filter and/or fuel pump. Purchase a Fuel Pressure Gauge and check fuel pressure at fuel rail. Should be 55 psi with key in pos. #2.
If low or no fuel pressure, change fuel filter first.
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ML 320 - 1999
Thanks Maj. Dundee, I will do just that. will keep you posted.
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2003 CLK 320 THROTTLE PROBLEMS
I'm new to Mercs , the terminology, abbreviations used and this site so really trying to find my way. I purchased a beautifully maintained 2003 CLK 320 with a genuinely impeccable provenance, 165,000 kilometres, j ust two weeks ago. Test drive was perfect . Despite what I'm about to say I don't drive the car harshly. Over the last two weeks I've had two distinct problems.
1. Under moderate braking approaching traffic lights to a stop , the engine faulters , as if wanting to stall, catches itself and then runs fine . Slow braking there's no problem.
2. Under hard acceleration she violently cuts out as if the transmission (automatic) has just jumped out of gear, total loss of revs and accelerator control. There's a 2-5 second delay and all returns to normal ( really dangerous stuff). I'm about to buy a fault code reader as my first step ( would really appreciate any recommendations for which to purchase that will read the Mercedes codes in the $300 bracket) . I'd really appreciate any advice on problems 1. and 2. above please. Regards Nissrolet.
1. Under moderate braking approaching traffic lights to a stop , the engine faulters , as if wanting to stall, catches itself and then runs fine . Slow braking there's no problem.
2. Under hard acceleration she violently cuts out as if the transmission (automatic) has just jumped out of gear, total loss of revs and accelerator control. There's a 2-5 second delay and all returns to normal ( really dangerous stuff). I'm about to buy a fault code reader as my first step ( would really appreciate any recommendations for which to purchase that will read the Mercedes codes in the $300 bracket) . I'd really appreciate any advice on problems 1. and 2. above please. Regards Nissrolet.
