W203 220cdi
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C220 Cdi
W203 220cdi
My car won't rev above 3krpm and won't change down on kickdown .After driving a few miles this fault goes away but returns after a short time . The car is prone to stall when maneuvering in a tight place at very low revs and seems to be connected with use of the steering at full lock .There is also hesitancy and jerkiness when driving in traffic and very low revs .
No warnings are showing on the instruments . So far I have cleaned the Maf sensor although this was not a "thin wire " type but the Pierburg type with no difference . Disabling of the MAF sensor makes no difference to the car's performance ..I have also checked the level of the transmission fluid which is OK .
Any help welcomed with thanks .
No warnings are showing on the instruments . So far I have cleaned the Maf sensor although this was not a "thin wire " type but the Pierburg type with no difference . Disabling of the MAF sensor makes no difference to the car's performance ..I have also checked the level of the transmission fluid which is OK .
Any help welcomed with thanks .
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Joined: Mar 2008
Posts: 3,714
Likes: 56
From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
Just wondered how many Kms the car has done & whether you could scan for fault codes. To me it sounds more like an engine problem rather than transmission.
Take a look at these posts to see whether you can diagnose the problem:-
By ausmbtek :-Does it always have low power or is it fine then looses power after driving for a while?
Common issues are jammed turbo vanes, air flow sensors, EGR valve blocked, boost pressure sensor faults or vacuum leak to the turbo control valve or damaged intake manifold flaps.
Only having the fault code for low boost pressure and if there is never full power then I'd suspect the boost pressure sensor, vacuum leak or turbo vanes jammed.
Good power than loosing after extending driving (usually constant speeds) mostly jamming turbo vanes.
Cats usually give low power all the time, sometimes after changing the cats the air mass meter dies (it would already be failing, but the sudden increase in air flow takes it beyond it's useful range and trips a new code).
Cats on CDI2 engines (mostly ML270) regularly blocked up in Australia, CDI3 engines rarely block cats unless the driver is particularly gentle. This is due to fuel being more finely atomised/less soot on the CDI3 and later engines.
https://mbworld.org/forums/c-class-w...convinced.html
https://mbworld.org/forums/c-class-w...uch-power.html
Please Llet us know of the outcome,
John C.
Take a look at these posts to see whether you can diagnose the problem:-
By ausmbtek :-Does it always have low power or is it fine then looses power after driving for a while?
Common issues are jammed turbo vanes, air flow sensors, EGR valve blocked, boost pressure sensor faults or vacuum leak to the turbo control valve or damaged intake manifold flaps.
Only having the fault code for low boost pressure and if there is never full power then I'd suspect the boost pressure sensor, vacuum leak or turbo vanes jammed.
Good power than loosing after extending driving (usually constant speeds) mostly jamming turbo vanes.
Cats usually give low power all the time, sometimes after changing the cats the air mass meter dies (it would already be failing, but the sudden increase in air flow takes it beyond it's useful range and trips a new code).
Cats on CDI2 engines (mostly ML270) regularly blocked up in Australia, CDI3 engines rarely block cats unless the driver is particularly gentle. This is due to fuel being more finely atomised/less soot on the CDI3 and later engines.
https://mbworld.org/forums/c-class-w...convinced.html
https://mbworld.org/forums/c-class-w...uch-power.html
Please Llet us know of the outcome,
John C.
Last edited by Carsy; Sep 9, 2012 at 06:09 AM. Reason: add info
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C220 Cdi
Yes thanks indeed Carsy and apologies for not posting sooner .As I type the car is in the local garage to see if something can be diagnosed .It also needs a bottom ball joint in the front .It has covered 100k miles and is a 2001 model . Easily the most troublesome car I've had from suspension joints , bushes etc to electronic woes . Yet it's a very nice car to drive when it's running Ok which is why I've hung on to it .
I'll come back when I've got a diagnosis .Again apologies for my oversight . I know how it feels when information is not acknowledged .
I'll come back when I've got a diagnosis .Again apologies for my oversight . I know how it feels when information is not acknowledged .
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MBWorld Fanatic!
Joined: Mar 2008
Posts: 3,714
Likes: 56
From: 1 hours drive north of Sydney Australia
2007 W204 220CDI Classic Sedan
Well done . I will keep it in mind with mine. Interesting that you had no codes to point to the problem. Obviously you have a good mechanic.
John C.
John C.
