Turbo question - Ford Powerstroke Diesel Forum
 
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post #1 of 8 Old 09-08-2013, 08:10 AM Thread Starter
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Turbo question

I have a 2008 6.4 with approx. 88k miles on it. I have only owned since 72k miles. We had an ultralite bumper pull trailer until about 5 months ago and now have a 13k 5th wheel. I noticed this year that i couldn't pull any hills in Arizona headed to the white mountains without the ect going through the roof. I since have had the radiator replaced and that seems to have fixed that issue.

Now to my question. We recently pulled the 5th to SW Colorado for a few days. Serious climbs up to 10.5k and really had no issues with the truck. (trailer different story, return home had to put new tires on) What I did notice is that the turbo guage seems to stay at 20 psi unless i completely take my foot off the gas pedal. I got about 7.5 mpg on the way there and had exhaust clean twice on the 640 mile trip.

I am wondering if I should take to dealer and complain about the turbo or if that is normal. I have an extended warranty that should cover.

thanks.

2015 F350 4x4 Lariat
3.55 axle
Airlift LoadLifter 5000
42 gal. aux tank
Reese RP30869
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post #2 of 8 Old 09-09-2013, 06:09 PM
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What's your EOT temp?

Wondering if Oil cooler is plugged or something.
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post #3 of 8 Old 09-10-2013, 07:01 PM Thread Starter
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eot is 15 or less above the ect which from what i understand is acceptable?

2015 F350 4x4 Lariat
3.55 axle
Airlift LoadLifter 5000
42 gal. aux tank
Reese RP30869
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post #4 of 8 Old 09-11-2013, 06:22 AM
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Quote:
Originally Posted by glraz View Post
eot is 15 or less above the ect which from what i understand is acceptable?
Correct. Can you post your temps? What is the max difference you see?

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #5 of 8 Old 09-11-2013, 06:31 AM
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How does ect affect Turbo Boost?

To the OP, when I pull my 7500 lb TT my boost stays around 10-20 PSI, even on the flats. I think that part is normal, at least I hope

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post #6 of 8 Old 09-11-2013, 06:35 AM
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Oh another thing I would do is take off the map sensor, ebp sensor and tube and clean them really well. That will affect turbo boost.

08 F350 cc/sb 4X4
h&s minimaxx, 5" flo pro, 4" down pipe, no limit cold air intake, dirty diesel EGR delete with intake elbow, 6.0 exhaust manifolds, custom up pipes, ported intake manifold, Apex 71mm LP turbo, Rudy's cold side pipe, diesel site coolant and transmission filter, diesel site intercooler boots, ccv mod, bilstein shocks, gogo dd solenoid, HID lights, Airdog II 165, PMF traction bars, PMF drag link, moshimoto aluminum radiator
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post #7 of 8 Old 09-11-2013, 09:15 AM
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Those boost numbers are normal. Your pulling a great big heavy wind brake so your drivetrain is under load constantly, until you go down hill. Getting rid of that DPF and buying a "race" tuner will help a little with improving your fuel consumption.
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post #8 of 8 Old 09-11-2013, 10:17 AM Thread Starter
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The max diff I saw was 16 with a high being around 230's when I was really pulling . Ect never went above 220. Once it hit 220 the fan kicked in and cooled it down.

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2015 F350 4x4 Lariat
3.55 axle
Airlift LoadLifter 5000
42 gal. aux tank
Reese RP30869
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