Thirstymerc
New Member
- Joined
- May 24, 2015
- Messages
- 4
- Car
- 06 ML500, 01 ML270CDI
Hi Guys,
I've just been through the whole choked inlet manifold saga with my ML270. At the EGR was putting into limp mode with a 3000 rev cap. I've removed the swirl flaps and cleaned the EGR. Since putting it all back together it ran fine for a couple of weeks. I put the remaining pipe on yesterday between the air box and the plastic box in the corner of the engine bay which I assume to be some kind of cold air draw. Now it has no power again but without the rev limit. I suspected I'd somehow hit something that had disabled the variable turbo boost so I checked it on Star Diag. The only code was yet another EGR code. If that were the case is it possible this is a different kind of limp mode which disables boost but doesn't limit revs? I know that the turbo actuator is controlled my vacuum as is the EGR. Is it possible that I've done something to the vacuum system that has disabled both the egr and the turbo but is only showing an EGR code. Where is the vacuum generated? I pulled the hoses at the EGR and turbo solenoids and there is a slight vacuum at each when idling. Any pointers would be greatly appreciated.
Cheers,
John
I've just been through the whole choked inlet manifold saga with my ML270. At the EGR was putting into limp mode with a 3000 rev cap. I've removed the swirl flaps and cleaned the EGR. Since putting it all back together it ran fine for a couple of weeks. I put the remaining pipe on yesterday between the air box and the plastic box in the corner of the engine bay which I assume to be some kind of cold air draw. Now it has no power again but without the rev limit. I suspected I'd somehow hit something that had disabled the variable turbo boost so I checked it on Star Diag. The only code was yet another EGR code. If that were the case is it possible this is a different kind of limp mode which disables boost but doesn't limit revs? I know that the turbo actuator is controlled my vacuum as is the EGR. Is it possible that I've done something to the vacuum system that has disabled both the egr and the turbo but is only showing an EGR code. Where is the vacuum generated? I pulled the hoses at the EGR and turbo solenoids and there is a slight vacuum at each when idling. Any pointers would be greatly appreciated.
Cheers,
John