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View Full Version : Ml320 goes into limp mode


pinky1970
23rd September, 2010, 09:11 AM
Ml320 sometimes goes into limp mode and misfires when i start and put under load up hill, getting ideas, i have just changed the plugs.
oldford
23rd September, 2010, 10:04 AM
Start by having the fault codes read and then post them.
pinky1970
23rd September, 2010, 10:17 AM
Fault code showing, different banks and diferent cylinders, it not the same cylinder or same bank, otherwise i would think the coil pack. cant remeber the code number.
trigital
23rd September, 2010, 10:26 AM
Change fuel filter.
bonecrusher
23rd September, 2010, 08:01 PM
Check the map sensor
tech111
23rd September, 2010, 08:10 PM
try to clean the throttle valve, and clear adaptation.
Albanais
23rd September, 2010, 08:40 PM
Change fuel filter.

Yep mate change the fuel filter, replace the battery , i think this gives to you problems which you will never know from where they comes, then check if the problem persists
pinky1970
10th October, 2010, 10:17 AM
Hi there, yesterday had full service and more, drain all greabox and replace with new filter & oil, new battery, full service, drain all brake fuild and replace with DOT4, 2 new engine mounts, new sterring pump, new fuel filter.new abs speed senor.

it strange it now feels slower than before, revs ok, feels like im towing something.

here are the codes ask for

P0383
P0178
P0173
P0178
P0173
P0301
P0302

CAN ANYONE HELP OR ANY IDEA WHAT ELSE I CAN DO, SINCE SERVICE IT HAS GONE INTO LIMP MODE 4 TIMES.
pinky1970
10th October, 2010, 10:26 AM
sorry codes are

P0303
P0170
P0173
P0170
P0173
P0301
P0302
sogaro
10th October, 2010, 01:20 PM
[QUOTE=pinky1970;800365]sorry codes are

P0303 cylinder 3 misfire
P0170. Fuel trim (bank 1 malfunction)..........leakage in air system, intake air leak, EVAP canister purge valve, fuel pressure pump, H02 sensor and injectors
P0173......Fuel trim (bank 2 malfunction)..........leakage in air system, intake air leak, EVAP canister purge valve, fuel pressure pump, H02 sensor and injectors

P0170
P0173
P0301 cylinder 1 misfire
P0302 cylinder 2 misfire
bonecrusher
10th October, 2010, 04:14 PM
Have a look at the map sensor
rocket1
10th October, 2010, 06:34 PM
hi
this problem is a airflow meter, vacuum or air leak, or both!:hmmmm2:
pinky1970
10th October, 2010, 09:28 PM
When you say airflow meter, do you mean air mass senor.
Albanais
10th October, 2010, 09:44 PM
When you say , do you mean air mass senor.
yes
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conect
12th October, 2010, 09:24 PM
did the problem occur b4 changing the plugs or after ?

if it was doing it b4 then the usual cause is the air mass sensor but the adaptation data will need resetting after replacement as previous posts have mentioned

the wiring to the coil packs can rub through on the rocker cover bolts

if the misfire occured after replacing the plugs then more likely to be plug leads swap them to different cylinders and see if the misfire moves

good luck
conect