Help help help codes no power please
- Thread starter TXlineman83
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ncollins64
Well-known member
Well any luck with this yet?
TXlineman83
New member
Matt at gearhead seems to agree with the bad Fuel Rail Pressure sensor. I have one coming tomorrow.
TXlineman83
New member
ncollins64
Well-known member
Probably 2 or 3 more weeks in the shop getting painted then I'll throw the trans in.
TXlineman83
New member
Nice. I'm hoping this FRP sensor comes in today and fixes my problems. Going to go ahead with the MAP sensor and clean it real well too.
TXlineman83
New member
$37 dollar part. I'll know this evening if this cures my heart aches
ncollins64
Well-known member
It better fix it
TXlineman83
New member
http://youtu.be/TCONJgdd3ac
0-80 full throttle. Still no low end boost.
New FRP sensor and cleaned MAP, IAT
0-80 full throttle. Still no low end boost.
New FRP sensor and cleaned MAP, IAT
TXlineman83
New member
What about an EBP sensor. Could that have anything to do with VGT boost. I thought I once heard it controls the vanes accordingly. Anyone confirm that.
09strokerpwr
New member
I know this winter when my ebp tube froze up I would build boost super fast and have no power
TXlineman83
New member
Well hell. I have no low boost. Kinda like a dead VGT. Everything else seems to be up to par. As far as I can tell at least. Still researching
dsberman94
Well-known member
Is the vgt working? If you were to switch the cts to the highest amount of gauges possible and watch FRP, boost, back pressure, vgt % if possible? Anything else that would help to watch all at the same time guys?
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what about the MAF sensor ?
TXlineman83
New member
TXlineman83
New member
My friend with the CTS is not here so I'm left with my SCT. If I unplug the VGT u can listen and watch the difference in the motor. But it build no boost on the low end like it should. I'm getting about 33 lbs boost max where I should be getting around 55 I believe
TXlineman83
New member
While I'm at the dealer. I'm considering EBP sensor and tube. Along with perhaps return to stock and reflash my truck with a solid ford backbone to start fresh on. Y'all think that may help as well
dsberman94
Well-known member
When we did work on a 6.4 we had an issue with the vgt solenoid going bad somehow. No reason for it to happen but it did. What will it do in park if you give it fuel? RPMs go to where and react how? Are you able to move the vgt arm with the truck running?
TXlineman83
New member
Can not move arm while truck is running. It's pretty dang tight. Hope that's how it should be. Will build no boost if I recall in park but will rev as high as u want.. Put it into drive. Stand on break and put pedal to the floor. Truck will not go over 1000rpm
Last edited:
dsberman94
Well-known member
Good. Your not supposed to be able to move the vgt arm while running. Our issue was that we could move the arm with the truck running. Pretty much rules out your vgt actuator being bad.
I'll let these more experience guys help out some more. I was trying to help from my experience working on the engine but I feel this is over my head. My best suggestion is to go through your engine very methodically and look for any plugs or connections that may not be plugged in all the way, at all, or securely. If you were pushing to get it done, and I understand why you were, there's a good chance they missed something. I know we missed one plug each of 2 times we took the cab off.
I'll let these more experience guys help out some more. I was trying to help from my experience working on the engine but I feel this is over my head. My best suggestion is to go through your engine very methodically and look for any plugs or connections that may not be plugged in all the way, at all, or securely. If you were pushing to get it done, and I understand why you were, there's a good chance they missed something. I know we missed one plug each of 2 times we took the cab off.
