W203newbie2021
New Member
Hi all,
I have a 2006 W203 220 CDI that has a low boost issue in high gears/speed. After all my troubleshooting I suspect the actuator but hopefully someone here can help.
Mileage 114k
Codes p2359 p0299
- I have checked all hoses and replaced one intercooler hose as oil residue was seeping out o ring seal (long shot but needed doing anyway)
- replaced MAP (was a freebie off a friend)
- cleaned EGR (didn't seem that bad)
I used aluminium speed tape to attach to actuator arm to the turbo to determine if arm was moving but the tape did not tear or even seem to be any different so highly suspect actuator not moving. This would explain why I have turbo all day long in low gears and limp mode comes on when on motorway.
I have removed the actuator and looked inside and found no obvious signs of broken wires etc. I need to take it to work to test with multi meter.
My only thing I'm thinking to check is the inlet port motor and maybe putting the resistor across is but not sure where this is on this model.
DOES ANYONE KNOW LOCATION PLEASE.
If my turbo actuator is not the fix is this likely the turbo?
Turbo inlet blades show no sign of wobble and only oil residue was in the intercooler pipes (I've been in and out a few times and after wiping not seen much build up) and the turbo vanes seem to be moving freely by hand (now actuator is removed).
One last point, can I drive without the actuator installed? I have put it all back together and I think I can hear a relay clicking (suspect to do with unplugged/removed actuator).
Thank you for your help.
Weekend mechanic.
I have a 2006 W203 220 CDI that has a low boost issue in high gears/speed. After all my troubleshooting I suspect the actuator but hopefully someone here can help.
Mileage 114k
Codes p2359 p0299
- I have checked all hoses and replaced one intercooler hose as oil residue was seeping out o ring seal (long shot but needed doing anyway)
- replaced MAP (was a freebie off a friend)
- cleaned EGR (didn't seem that bad)
I used aluminium speed tape to attach to actuator arm to the turbo to determine if arm was moving but the tape did not tear or even seem to be any different so highly suspect actuator not moving. This would explain why I have turbo all day long in low gears and limp mode comes on when on motorway.
I have removed the actuator and looked inside and found no obvious signs of broken wires etc. I need to take it to work to test with multi meter.
My only thing I'm thinking to check is the inlet port motor and maybe putting the resistor across is but not sure where this is on this model.
DOES ANYONE KNOW LOCATION PLEASE.
If my turbo actuator is not the fix is this likely the turbo?
Turbo inlet blades show no sign of wobble and only oil residue was in the intercooler pipes (I've been in and out a few times and after wiping not seen much build up) and the turbo vanes seem to be moving freely by hand (now actuator is removed).
One last point, can I drive without the actuator installed? I have put it all back together and I think I can hear a relay clicking (suspect to do with unplugged/removed actuator).
Thank you for your help.
Weekend mechanic.