Help cls320 2005 om642 egr/remap/limp mode. Short shifting

[H22221]

Hi,

So, my egr broke, so I got a remap to map it out, worked fine for 20 minutes albeit shift points were at 3500 to 3600 rpm (not sure why!), then limp mode. Code was for glow plug not actuating, cleared and was fine for a short drive. Then I recalibrated the throttle valve actuator and it kept going into limp mode with no codes when I cleared the codes it was sluggish, worse than the stock map.

Tried to put stock map back on with egr delete and the same again straight into limp mode.

So I put the base map on again and obviously straight to limp as egr is broken.

Ordered a replacement egr which should be here tomorrow, and hopefully it will be fine.

But what I'm wondering is why the shift points changed from 4k to 3.5/3.6k with a performance remap on it?

And how can it go into limp mode with no codes?

Does the egr need to be functional even if it's mapped out? I would think not?

Any help is much appreciated.

Thanks

 

[Larkone]

Faulty actuator gives limp mode with no codes as do leaks/splits in the pipework as a starter. If the EGR was mapped out did they check that it was in the closed position and not jammed open?

 

[H22221]

Faulty actuator gives limp mode with no codes as do leaks/splits in the pipework as a starter. If the EGR was mapped out did they check that it was in the closed position and not jammed open?

Thanks. Egr is definitely closed, I took it out and checked, also popped the cover off to double check it wasn't opening etc (cover is not in the trans tunnel!!! Woops!) .

Ok, I will have a look at the actuator if it still goes into limp after egr swap. I think I may have messed it up by recalibrating the throttle valve actuator, but surely that would get sorted on returning to stock map with egr delete, so may be the actuator.

Is there anyway to test it? My scanner actuates it with car at idle and it seems to work at 10% and 90% with boost pressure rising or falling....

Thanks for the response

 

[alexanderfoti]

The re-map was bad.