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I chose to swap out the tiny turn because it began to whistle and was about to pop. Purchased a cartridge, cleaned off the area, and then replaced it. After around 200 yards of testing, I noticed that it smelt hot. I checked it out, and the turbo is rather hot. I got the following codes upon plugging it in: 452A DPF and 4507 EGR.
I attempted to force a regeneration, but it refused, and I clearly don't know how to direct it to do it that way. At rest, the data stream shows a back pressure of around 13. Prior to my turbo replacement, the vehicle was operating normally with only a little lag. After a reasonably easy turbo replacement, I don't understand how awful things got. Something is going on that I am not seeing.
Any assistance would be very valued.
Thank you ahead of time.
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Turbo failure in the X5 E70
Personally, I think the DPF is to blame for the turbo's failure more than the other way around.
If the turbo is becoming really hot, it's likely that the DPF has to be removed and cleaned.
Is it really going to transition from small to big turbo? I'm worried that a vacuum problem is keeping it stuck on tiny turbo, which will eventually cause it to overheat.
If the turbo is becoming really hot, it's likely that the DPF has to be removed and cleaned.
Is it really going to transition from small to big turbo? I'm worried that a vacuum problem is keeping it stuck on tiny turbo, which will eventually cause it to overheat.
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Labusthetormentor
- Posts: 40
- Joined: Mon Feb 02, 2026 9:03 pm
The response is appreciated. How can I tell whether it's switching? I know I sound dense, but no idea. I was planning to replace it all with new hoover line that I got specifically to get rid of that. I would prefer not to remove the dpf because I've heard it's a pain, but if it's necessary, then it must be done.