W203 C220 CDI Lack of Power On Pickup

[hellgrace5]

Hello all !

I owned a W203 C220 CDI Mercedes. I have this problem. I pulled out 2 codes which are P1470 & P1403. I search around the forum and the P1470 code somewhat related to the boost controller around the turbo ? I thought of asking any professionals here to give me some more advice on these 2 codes.

 

[rpe2]

Hi, and welcome to the forums.

As you put the engine under load, do you hear a loud woosh, or whistle?

It sounds as though your intercooler or one of your turbo pipes may have burst.

 

[hellgrace5]

Hi.

I heard the loud whistle and hoosh sound when under load.
i replace the intercooler yesterday because the left side plastic is cracked and leaking. And i checked every piping, there is no leakage. Still it does not solve my issue

 

[rpe2]

Is your issue that the fault codes are there, or is it still lacking power?

 

[hellgrace5]

the fault codes and the lack of power.

 

[Blakey]

Could be your vacuum boost pressure transducer, item 10 in the link

http://www.detali.ru/cat/oem_mb2.as...603716.604&CT=F&cat=69J&SID=80&SGR=010&SGN=01

Or a split in any of the associated hoses, most usually perished or damaged rubber components can cause this.

Good luck and hope you fix it.

 

[hellgrace5]

@Blakey

Thanks for the info. May i know where is the vacuum boost pressure transducer located ? Is nearby the turbocharge, below air filter compartment ?

Thanks again

 

[hellgrace5]

Sorry for double post ! I have found the PRESSURE TRANSDUCER its infront of the coolant resevoir right. How do i determine if it is faulty. Thanks !

 

[hellgrace5]

@bump

Will very appreciate if someone enlighten me please ! Thanks in advance

 

[Blakey]

Carefully take the hose off (not the one that vents via a filter to atmosphere) and suck the hose. If you can draw air up then you have a leak, if not then it's probably the sensor.

Chris.