Hi all new to the forum, but ive been reading it for quite a while.

I have a 1993 300 D 2.5 turbo. This is not my first Mercedes diesel. but I have run into a difficult problem with this 1. I have an intermittent low power issue. When you started up cold hot turbo seems to work great has excellent power. But after it warms up or after a little bit of driving the power seems to go away.it feels really slow and sluggish like I can put my foot down and it's almost going nowhere. It seems like the power comes back after you shut it off and started back up. But that maybe a mistake but I do know that power is best when cold.

I have deleted the Egr but haven't completely removed it. I put a block off plate between the Egr and manifold and disconnected the vacuum hose to the EgR and plug it off I also disconnected the electronic actuator for the EgR.fuel filters have both been done in the last 3 months. I know my turbo works because when power is there it feels really good. But it just intermittently goes away. last time I check mileage average was about 28.5 with about 50/50 highway city.

at this point I will take any ideas anyone has. what could be causing interment low power brain storms and ideas are welcome from anyone and very much appreciated. I have provided all information I can think of. If any other info is needed please ask Thanks in advance