Bad mpg, please help
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Joined: Jan 2010
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Bad mpg, please help
Hey guys, i have a 2000 F350, 7.3. Its got DP_Tuner, ITP fuel setup with adjustable pressure, straight piped, and a DIY air filter. Problem is my truck is only getting about 8mpg in the city and 10mpg on the highway. It wasnt that big of a deal until last meek when i found out i have to drive 4,600 miles to Wyoming and back. Its not the tranny because its been replaced. ANY ideas will be great.
I read a post about the ebp sensor. What does that do?
I read a post about the ebp sensor. What does that do?
Cargo Master
Joined: Apr 2007
Posts: 2,659
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Tell us a little more about your truck.
- How long have you had poor mileage?
- What size tires are you running?
- How fast do you drive on the freeway?
- Which tune do you use in the DP?
- Are you sure the fuel injectors are in good working order?
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1. About 8mo
2. 33' tires
3. Usually the speed limit (75) Keep rpm around 2k
4. Usually economy but sometimes stock. Stock tune gets same result as econo.
5. Nope how do i check?
Post Fiend
Joined: Mar 2007
Posts: 26,966
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From: Texas
Do you have gauges? If you put it in a performance or even the economy tune and really get on the skinny pedal, do you get heavy black smoke out the tailpipe?
I'd be checking for a boost leak. Maybe leaking up pipes.
I'd be checking for a boost leak. Maybe leaking up pipes.
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In econo it smokes sometimes, but not always. In performance i cant see anything behind me, but sometimes it smokes way more than others.
All i have is a tranny temp gauge.
Could this prob be caused by the ebp thing?
All i have is a tranny temp gauge.
Could this prob be caused by the ebp thing?
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
A clogged sensor and tube can affect readings the PCM uses in the fueling table, but it won't affect it that much. You really need an EGT (pyro) gauge and boost gauge. EGT's should be your top priority. It's easier to replace a transmission than an engine.
Check the up-pipes for signs of soot. Those are the pipes that go from the exhaust manifold up to the back of the turbo. If you see a bunch of black soot where they connect behind the turbo, that would explain a lot of the MPG and lack of smoke issue.
Check the up-pipes for signs of soot. Those are the pipes that go from the exhaust manifold up to the back of the turbo. If you see a bunch of black soot where they connect behind the turbo, that would explain a lot of the MPG and lack of smoke issue.
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Thread Starter
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New User
Joined: Jan 2010
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A clogged sensor and tube can affect readings the PCM uses in the fueling table, but it won't affect it that much. You really need an EGT (pyro) gauge and boost gauge. EGT's should be your top priority. It's easier to replace a transmission than an engine.
Check the up-pipes for signs of soot. Those are the pipes that go from the exhaust manifold up to the back of the turbo. If you see a bunch of black soot where they connect behind the turbo, that would explain a lot of the MPG and lack of smoke issue.
Check the up-pipes for signs of soot. Those are the pipes that go from the exhaust manifold up to the back of the turbo. If you see a bunch of black soot where they connect behind the turbo, that would explain a lot of the MPG and lack of smoke issue.
How do i check for clogged sensor?
There is some soot on the firewall behind the turbo, could that be the issur?
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WHAT????
Just to shed some light, the OP did not ask what your truck is getting, he needs help addressing a problem.
