What's wrong with this car

[amazighman]

(W203 C220 CDI auto 2006.)

Hello

I just came back from work 20 miles motorway drive , The car started behaving strange... It sort of accelerates and decelerates and revs fluctuate.... Even if I floor It down the rev counter climbs very gradually... No power

I thought I might have Stuck turbo vanes, Put a can of Wynns turbo cleaner and the car ran beautifully for two weeks and today the issue came back again, issue is there when engine is up to temperature.

No fault codes , Egr replaced , Could this be the Turbo actuator playing up? Had an over boost fault stored last month , cleared it and never came back.
Cheers

 

[mersum1es]

is it revving over 3000 (=limp mode)?

What code reader you used?

 

[amazighman]

Yes revs up to red line.
Icarsoft 980

 

[Deleted member 149005]

Is MB’s way of telling us we are in lockdown

 

[mersum1es]

If no fault codes (I am not 100% sure carsoft can detect 100% codes), car thinks all is ok. So live data when fault is on will perhaps tell something (MAF, speed sensor, temp, pressures etc)... always worth to check TCU/connector oil.

 

[amazighman]

I want to buy one of these ebay ebay cheapo data loggers... See if it picks up anything.
Transmission connector is good.

 

[amazighman]

I want to buy one of these ebay ebay cheapo data loggers... See if it picks up anything.
Transmission connector is good.

 

[mersum1es]

cant crasoft log a data?

 

[amazighman]

Not sure...

 

[mersum1es]

Here SDS is again showing its superiority; you can perform individueal component test.

Of course all live data is also available though simultaneous logging is not as good as it could because stupid logger can't use different scaling for different channels, if logging chart curves. Table type data works but there problem is refresh rate if need to be seen delays between signals.

 

[amazighman]

As my Icarsoft hadn't been updated for ages , I did an update and went to try it and hey presto flagd two faults
Now its showing the following fault codes

P2133 Throttle / Pedal position sensor/switch F intermittent
P2144 Throttle /Pedal position sensor/switch F High

 

[mersum1es]

Probably pedal then.

 

[amazighman]

Was showing 2 glow plug faults before I did the Icarsoft software update....
After the update it only shows pedal faults.
Glow plugs wouldn't cause poor acceleration .

 

[grober]

If the turbo is vacuum operated?
Mercedes Sprinter Turbo – Limp Home – Diagnosis and Fault Finding

 

[amazighman]

No turbo actuator is electromechanical