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Old 08-13-2010, 07:02 AM
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Lack of power when towing?

Just a little background first. My truck is a 96 f-250 7.3. Mods include tymar intake, exhaust with down pipe, and php tunes 80 daily, 40 and 60 tow. The truck runs great until I start to pull a decent grade with my jeep behind it. It weighs with trailer only 6500 lbs or so. I just pulled the line of of the map sensor and hooked a smoke machine up to it to check for boost leaks and found nothing. Fuel filter is new(gets changed with every oil change) I also run fuel additives most of the time. Any ideas?
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Old 08-13-2010, 07:11 AM
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Oh ya the truck does not have a boost gauge.
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Old 08-13-2010, 07:12 AM
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Its really hard to tell whats going on. It should pull pretty good.
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Old 08-13-2010, 08:46 AM
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What gears does it have?
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Old 08-13-2010, 09:06 AM
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4.10 It has always handled my Jeep really well it just seems that I am pulling the same grades a bit slower
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Old 08-13-2010, 10:21 AM
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How many miles? What condition is the turbo in? Any play? any codes?
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Old 08-13-2010, 10:44 AM
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190,000 miles no codes, last time i looked at the turbo 6 months ago it all looked ok
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Old 08-13-2010, 10:51 AM
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So you have been using your truck to pull your Jeep on the same trailer for awhile and it has always been good but recently it seems to be getting gutless? How much? Like on a scale of 1 to 10 where is it now if it used to be 10? And when does it do it? Very bizarre that there would only be a power loss when hooked to a trailer and pulling a grade. Any other symptoms? Increased fuel consumption?

Could be a few things
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Old 08-13-2010, 01:27 PM
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Same jeep same trailer. Mileage does not seem to have changed. I used to be able to pull the grade out of town at 65mph with out much problem. Now I am down to 55 ish pulling the same grade.
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Old 08-14-2010, 02:29 AM
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Maybe the hill got steeper...
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