Sluggish Accel - Low Power
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New User
Joined: May 2011
Posts: 18
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From: Lima Peru
Sluggish Accel - Low Power
I own a 2000 Excursion with a 7.3l Turbo diesel.
Previous owner had a BullyDog chip on it. I've been told the truck had lots of power and smoked a lot, and that the chip stopped working.
When I got it, it run without the chip. The Emission system light has been on since i bought it. The truck's acceleration is very sluggish, I mean, VERY, it progressively speeds up, if the road has a slope it wont go faster that 40MPH. I can't feel it accelerate. This engine should have enough power/torque.
I have 37in tires on it, but even before the truck behaved the same.
Any suggestions how to fix this? What should I look for? Exhaust? Sensors? Injector?
I will add a chip/programmer later, but want to fix this first.
Appreciate comments!
Previous owner had a BullyDog chip on it. I've been told the truck had lots of power and smoked a lot, and that the chip stopped working.
When I got it, it run without the chip. The Emission system light has been on since i bought it. The truck's acceleration is very sluggish, I mean, VERY, it progressively speeds up, if the road has a slope it wont go faster that 40MPH. I can't feel it accelerate. This engine should have enough power/torque.
I have 37in tires on it, but even before the truck behaved the same.
Any suggestions how to fix this? What should I look for? Exhaust? Sensors? Injector?
I will add a chip/programmer later, but want to fix this first.
Appreciate comments!
Got Data?
Joined: Dec 2012
Posts: 4,261
Likes: 1,397
From: Lake Stevens, WA
Yep, good plan. Get that rig to 100% first before adding programming. It would be good if you could get the codes read so we can see what that Service Engine Soon light is telling you. This truck takes a special code reader, not the standard auto store type. Many of us use the Auto Enginuity software to do it, but there are others.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Yeesh... I don't know how many 7.3L techs they have in Lima, but the 7.3L can trick an inexperienced one into replacing parts without fixing the problem. Get the readings and see if you can consult before you gut the truck and your wallet.
Cargo Master
Joined: Oct 2010
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Elder User
Joined: Jun 2012
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From: N. Va.
I agree. Start with getting the emission system light issue corrected. It may be a multitude of small issues that are adding up to your power loss that you will need to track down and fix one by one. From your symptoms I would start with verifying your fuel pressure. Do a search and you will find tips on hooking up a pressure gauge at your fuel filter.
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New User
Joined: May 2011
Posts: 18
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From: Lima Peru
Damn national dealer wont accept to let my truck in their shop because they say its too old!! They dont even want to scan it!
Any ideas on how to identify the problem? Any PC software available or programmer to to the job?
Any ideas on how to identify the problem? Any PC software available or programmer to to the job?
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
AutoEnginuity. Find the nearest rep to save on shipping/time. You'll have a very powerful troubleshooting tool with that (for a great price)... it's what many of us use. All you need is the base package with a Ford bundle added. All for less than $400 U.S.
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bigadam
1999 - 2003 7.3L Power Stroke Diesel
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Mar 16, 2005 10:29 PM