Loss of mpg after DPF replacement
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Loss of mpg after DPF replacement
2015 F250 6.7L SD
A few weeks back I had to replace my DPF. Once the DPF was replaced I still had a check engine light, which turned out to be a sensor further up the exhaust, and the DEF heater went out. It was after the DPF replacement and before the sensor replacement that I noticed the issue.
First thing I noticed was that the turbo had a louder and higher pitch whirl. This is my first diesel, so I didn't put much thought into it, maybe I just noticed it more now or something. It wasn't until I noticed that I was getting worse MPG per tank (hand calculated and metered) and it hasn't gone up, no matter how light footed I try to be.
I should also note that I have not towed anything since the repair, so it's mostly highway and unhooked miles.
Anyone experience this too? Any help would be awesome! Thanks in advance.
A few weeks back I had to replace my DPF. Once the DPF was replaced I still had a check engine light, which turned out to be a sensor further up the exhaust, and the DEF heater went out. It was after the DPF replacement and before the sensor replacement that I noticed the issue.
First thing I noticed was that the turbo had a louder and higher pitch whirl. This is my first diesel, so I didn't put much thought into it, maybe I just noticed it more now or something. It wasn't until I noticed that I was getting worse MPG per tank (hand calculated and metered) and it hasn't gone up, no matter how light footed I try to be.
I should also note that I have not towed anything since the repair, so it's mostly highway and unhooked miles.
Anyone experience this too? Any help would be awesome! Thanks in advance.
Tuned
Joined: May 2019
Posts: 279
Likes: 14
From: Brookings, SD
I don't have the answer for you, but a followup question. Who did the DPF replacement? I'd be talking with the shop that did it and see what ideas they may have. It may be worth a visit to a ford dealer also if they didnt do the initial work.
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Araltd
1997 - 2006 Expedition & Navigator
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Nov 12, 2011 02:02 AM
