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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

HELP Predator Problems!

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Old Aug 20, 2004 | 10:41 PM
  #31  
SpartanDieselTech's Avatar
SpartanDieselTech
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From: Hendersonville, NC
Originally Posted by dani9678
FastF350,
I noticed in and earlier post that you said that your turbo seemed to rev up and down while you were at a steady speed and sometimes the engine would get real quiet like a gas engine and then get loud like a diesel again. My dad has a 2003 KingRanch F-350 dually with the Edge-Juice module, 3 pod pillar(which has the EGT,boost,and tranny temp.), 4 inch exhaust from turbo back and a reusable filter like a K&N. He had all of this installed about 6 months ago and he could burn them tires with no problem. He had thought the truck was powerful before the upgrade and had no idea that it had that much more potential. He started noticing this problem with the engine fluctuations about 1 month ago and also noticed that he doesn't have the power he once had. It is almost like he has the power mode set in the first position. Did you ever figure out what was causing the problem with yours?

Matt,
Jacksonville, FL

P.S. I posted some pics of his truck in my gallary if anybody wants to see how it looks.
I'm not sure specifically what Fast was describing, but both of those issues in generalization are normal engine functions.

As for the turbo, the 6.0 uses a Electronic Variable Response Turbocharger. The vanes inside the turbo are adjusted electronically; as engine load increases and decreases the turbo will *spool* up and down to provide the exact amount of boost commanded by the PCM. This is a normal function.

The engine is also supposed to go nearly silent when cruising downhill at 0% throttle (idle) as nearly no fuel is being sent to the engine. Fueling is not restored until the load is once again increased. This can occur on even the slightest downhill slopes or coasting.

From reading the end of your post it seems like you may have other issues involved than that, though. Did the loss of power happen to occur around the time of an oil change?

A single bad sensor, a high oil level, a chafed wiring harness, or anything simple could be the cause of such an effect...
 
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Old Aug 20, 2004 | 10:45 PM
  #32  
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FastF350
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Originally Posted by dani9678
FastF350,
I noticed in and earlier post that you said that your turbo seemed to rev up and down while you were at a steady speed and sometimes the engine would get real quiet like a gas engine and then get loud like a diesel again. My dad has a 2003 KingRanch F-350 dually with the Edge-Juice module, 3 pod pillar(which has the EGT,boost,and tranny temp.), 4 inch exhaust from turbo back and a reusable filter like a K&N. He had all of this installed about 6 months ago and he could burn them tires with no problem. He had thought the truck was powerful before the upgrade and had no idea that it had that much more potential. He started noticing this problem with the engine fluctuations about 1 month ago and also noticed that he doesn't have the power he once had. It is almost like he has the power mode set in the first position. Did you ever figure out what was causing the problem with yours?

Matt,
Jacksonville, FL

P.S. I posted some pics of his truck in my gallary if anybody wants to see how it looks.

Not yet i will be taking it in tomorrow. We will see what they say. It started when i had the latest flash done to my truck and i loaded the predator then unloaded the predator and it went away. But now its really bad with nothing loaded. I am thinking i may have gotten a messed up predator or i did something wrong... even when it came to me the box was all messed up and looked like someone tossed it in the box. i really didnt think about it but now i am just trying to make it all seem clear.
 
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Old Aug 20, 2004 | 10:55 PM
  #33  
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PSD the (going silent) that i am having is really weird. Foot off gas(diesel) and stopping or even stopped in park. It sound like the vanes go flat and then open wide up. Of course with the exhaust you can hear it loud and clear. Its running but sounds like some one just started it and you here the jet fire up. If you remember the other day i told you i noticed i was only hitting 28MAX psi and i usually see 32-35 the vane thing is starting to make me wonder.
 
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Old Aug 21, 2004 | 06:58 AM
  #34  
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VTC actuator sticking???
 
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Old Aug 21, 2004 | 08:41 AM
  #35  
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I tried to picture the technology of this variable vane turbo and could not FATHOM how they could adjust the vane angle on something spinning @ 20,000+ rpms
Just knew it would implode at any second !!!

But then I heard that it's not actually the spinning Turbo blades that are being adjusted, but vanes right before the inlet to adjust the OPENING into the turbo...
somewhat like your A/C vents you can open and close to change the flow.... isn't that correct ?

Makes for a MUCH simpler engineering solution than the one I had pictured
 
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Old Aug 21, 2004 | 09:27 AM
  #36  
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SBV45
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Joined: Aug 2003
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From: Central Texas
Originally Posted by FastF350
What do you guys make of these.

P0266 cylinder2 control Mod
P0603 Power trans Keep Alive Mod
P2263 Turbo boost system

Werent there last night. And its going in tomorrow!
P0266 cylinder2 + you have an imbalance on #2. Its not firing right for some reason.

P0603 Powertrain Control Module Keep Alive Memory (KAM) Error. Get that one all the time with uploading the Predator. I just clear it and it goes away.

P2263 Turbo/Super Charger System Performance
Ford Bulletin: Low Power/No Boost and/or Code P2263:
If the turbocharger is suspected to be the cause of low boost, it should be tested by manually activating the variable geometry turbo control valve. The engine should be at operating temperature. Using the WDS active commands in datalogger, monitor EBP, VGT%, RPM abd MGP. Set the RPM to 1200 and the VGT% to 0 and record the EBP and MGP readings. Increase VGT to 85% and watch for an increase in EBP and MGP, and listen for a whistle from the turbo. If there is no pressure increase or whistle, check the control wiring for the VGT by installing a est light in the VGT harness and commanding the VGT from 0-85%--the light should be off and then slowly brighten. If the wiring checks out, replace the VGT control valve (P/N 3C3Z-6F089-AA) and retest. If the condition is unchanged, then replace the turbocharger. Broadcast Message 0887.
Engineering is currently investigating false P2263 codes. Broadcast Message 1290
 
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