no power help
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Senior User
Joined: Jan 2010
Posts: 240
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From: blue springs Missouri
no power help
Ok I have a 2000 7.3 the truck has 214,000 miles. It has a bully dog gt, filter mod, 4" down pipe with 5" back, fuel bowl plunger deleted, new batteries, new passanger uvch, new cps, used idm and ecm they both came out of a 01 7.3 that's all what the truck is doing is once it hits 4 th gear the truck falls on its face and just has no power. I have put the same tuner on a friends same year truck he only has a 4" Turbo back and on take off it blows 10x the amount of smoke mine does I have to floor it and all I get is a little puff. I have no clue what's up with my truck. Any ideas?
still plays with trucks
Joined: Mar 2004
Posts: 1,743
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From: Twin Falls Idaho
Is it RPM related? some thing else to look at is fuel pressure. Is it constant through out the RPM range. Also fuel restriction in the tank. plugged screens in the tank can cause this. install vaccum guage between the tank and the pump, should see no more than 5 lbs of VACCUM at idle. any more and you have clogged screens. do a search for Hutch and Harpoon mods on this sight. Something else that can cause loss of power at upper RPM is low HPOP pressure. You need someone with a good scanner to read this.
Barney
Barney
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Joined: Jan 2010
Posts: 240
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From: blue springs Missouri
If I floor the truck its like as soon as it hits 3rd it losses all power. And in 5th the truck sounds and feels as if it is only running on 6 cyl you have to all most floor it to get the power back when you wanna get moving. I've thought fuel pressure but it doesn't do it on my buddy's truck
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4000 rounds a min
Joined: Apr 2010
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From: Albemarle NC
Man you are making my head hurt, LOL. I would check everything Barney suggested as well as hooking up a fuel gauge to the back of your fuel bowl. And also check your EBPV tube and sensor if my mind is still with me I think it has something to do with fueling and if the tube is pluged it dont work right.
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4000 rounds a min
Joined: Apr 2010
Posts: 2,223
Likes: 0
From: Albemarle NC
If I floor the truck its like as soon as it hits 3rd it losses all power. And in 5th the truck sounds and feels as if it is only running on 6 cyl you have to all most floor it to get the power back when you wanna get moving. I've thought fuel pressure but it doesn't do it on my buddy's truck
still plays with trucks
Joined: Mar 2004
Posts: 1,743
Likes: 3
From: Twin Falls Idaho
If I floor the truck its like as soon as it hits 3rd it losses all power. And in 5th the truck sounds and feels as if it is only running on 6 cyl you have to all most floor it to get the power back when you wanna get moving. I've thought fuel pressure but it doesn't do it on my buddy's truck
Barney