While your VGT numbers may not be textbook they're certainly not bad at all. I would check boots for cracks or leaks at the clamps...maybe check the hose going to the MAP. May even be not having a perfect seal on the up-pipe to turbo seal. If all that is fine and it keeps kicking out the code I would then pull it and check the unison ring/clean the turbo. Check out Diesel Tech Ron's videos. He made a few on the turbo which should really help you figure things out.
P0299 and VGT 85% at idle
Hi all 2007 6.0 here is my prob a p0299, my VGT at cold start 85% till I drive and get rpm's to 1700 ish then it drops to normal rang drives great plenty of power and works great until i stop and let it idle then the VGT slowly go's up again (15 - 60 sec) to 85% ? I shut it off and with KOEO map 14.07 ebp 14.17 baro 14.21. then I start it KOER VGT starts out at 50-60 ish and go's back up to 85% and the map 14.6-.9 ebp 15.0-17.0 and baro solid 14.21 , now if I gun it the VGT drops to 40-60 ish and then go's back up to 85% ? it runs GREAT no issues but for the p0299 and engine light comes back on. any help would be welcome.
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normal MAP & EBP at idle
hi anyone know what the normal MAP & EBP at idle should be ?
www.powerstroke.org
Diesel Tech Ron's RIP Vid's are great have watched most for the 6.0 . I'm thinking the sticking turbo isan't the prob it doesn't stick at any % level it go's straight to 85% if cold or sat for 10 minuets or more then started if a worm start and ya tap the throttle it comes right off 85% down to 40-60% and then slowly creeps back up again. My very all be it limited knowledge of the turbo world says something is commanding it to go back to 85% but what the F do I know 🤣While your VGT numbers may not be textbook they're certainly not bad at all. I would check boots for cracks or leaks at the clamps...maybe check the hose going to the MAP. May even be not having a perfect seal on the up-pipe to turbo seal. If all that is fine and it keeps kicking out the code I would then pull it and check the unison ring/clean the turbo. Check out Diesel Tech Ron's videos. He made a few on the turbo which should really help you figure things out.
I can't recall if we have discussed it or not, but the VGT % duty cycle numbers are ONLY commands. Not indicative of a position of the turbo vanes themselves. So when the VGT % duty cycle changes, all we know is that the PCM is trying to make a turbo change. We do not know if the inlet guide vanes to the turbo actually change or not.
So when we see 15% or 85% VGT % Duty Cycle, we are generally being told that the PCM wants the turbo in a position that it is not able to get to. It can be EBP or MAP values, or air flow values that the PCM is wanting to push to a specific set point without success.
Since there is no "position indicator" component of the VGT actuator, it is flawed thinking to look at a VGT % Duty Cycle command value and think that it is associated with a certain actuator or turbo vane position. It is only a command to action that may or may not be met.
So when we see 15% or 85% VGT % Duty Cycle, we are generally being told that the PCM wants the turbo in a position that it is not able to get to. It can be EBP or MAP values, or air flow values that the PCM is wanting to push to a specific set point without success.
Since there is no "position indicator" component of the VGT actuator, it is flawed thinking to look at a VGT % Duty Cycle command value and think that it is associated with a certain actuator or turbo vane position. It is only a command to action that may or may not be met.
Ok got it there's no feed back loop to tell the PCM that it moved. so only based on sensor data MAP, etc the PCM thinks it needs in this case more boost so it commands a high boost signal to the VGT solenoid ? am i correct in thinking the higher the VGT% the more boost the PCM is asking for / thinks it needs?I can't recall if we have discussed it or not, but the VGT % duty cycle numbers are ONLY commands. Not indicative of a position of the turbo vanes themselves. So when the VGT % duty cycle changes, all we know is that the PCM is trying to make a turbo change. We do not know if the inlet guide vanes to the turbo actually change or not.
So when we see 15% or 85% VGT % Duty Cycle, we are generally being told that the PCM wants the turbo in a position that it is not able to get to. It can be EBP or MAP values, or air flow values that the PCM is wanting to push to a specific set point without success.
Since there is no "position indicator" component of the VGT actuator, it is flawed thinking to look at a VGT % Duty Cycle command value and think that it is associated with a certain actuator or turbo vane position. It is only a command to action that may or may not be met.
Oh and I just found out I have a 4" exhaust with no cat only a magnaflow muffler mite that be throwing off the EBP #'s to the PCM ?, I have a superchips dashpaq+ with 4 dif tunes in it I haven't tried them yet , mite that make a difference ?I can't recall if we have discussed it or not, but the VGT % duty cycle numbers are ONLY commands. Not indicative of a position of the turbo vanes themselves. So when the VGT % duty cycle changes, all we know is that the PCM is trying to make a turbo change. We do not know if the inlet guide vanes to the turbo actually change or not.
So when we see 15% or 85% VGT % Duty Cycle, we are generally being told that the PCM wants the turbo in a position that it is not able to get to. It can be EBP or MAP values, or air flow values that the PCM is wanting to push to a specific set point without success.
Since there is no "position indicator" component of the VGT actuator, it is flawed thinking to look at a VGT % Duty Cycle command value and think that it is associated with a certain actuator or turbo vane position. It is only a command to action that may or may not be met.
All those things will make a difference.
Do you have an aftermarket air intake also? I can't recall.
Nice clean undercarriage you have there!
Nice clean undercarriage you have there!
No I don't, Thanks yeah the truck is pristine, so far the only things not stock is the coolant filter I put on and the exhaust was there already and I put the dashpaq+ econ tune with 20% stiffer shifts, Oh and I saw I have a block heater on it just the heater element no plug in cord.Do you have an aftermarket air intake also? I can't recall.
Nice clean undercarriage you have there!
Are you hearing the turbo sound change when you first start the engine ?
have to be quick to get to hear the exhaust or have someone else start the engine
Normal to see the % cycle thru the ranges after the truck has been idling a few minutes
also at a stoplight the % will be pretty high, until you touch the accelerator pedal -- helps keep the turbo spooled up for when you are ready to take off
have to be quick to get to hear the exhaust or have someone else start the engine
Normal to see the % cycle thru the ranges after the truck has been idling a few minutes
also at a stoplight the % will be pretty high, until you touch the accelerator pedal -- helps keep the turbo spooled up for when you are ready to take off
I haven't tried to notice a sound change at start up I will check that today , after Idling a few min when up to temp I have seen it do the up & down of the VGT% but only some times and yes up to temp at stop lights it will be in the 70 ish range. I do have a 10% dead throttle at cold start and when up to temp its only a 5% dead throttle, but the overall APP is reading the throttle peddle movement but no motor response cold till 10% and worm till 5%Are you hearing the turbo sound change when you first start the engine ?
have to be quick to get to hear the exhaust or have someone else start the engine
Normal to see the % cycle thru the ranges after the truck has been idling a few minutes
also at a stoplight the % will be pretty high, until you touch the accelerator pedal -- helps keep the turbo spooled up for when you are ready to take off
Monitor for Idle Verification Switch
you wont get any throttle response until the PCM gets verification from the pedal switch
a worn pedal can cause some of your problems -- but otherwise sounds pretty normal to me
ForScan is the goto tool for these trucks -- the windows version will allow you to control the turbo while sitting still
BAFX or ObdLink MX+ adapters work well -- both ate bluetooth
you wont get any throttle response until the PCM gets verification from the pedal switch
a worn pedal can cause some of your problems -- but otherwise sounds pretty normal to me
ForScan is the goto tool for these trucks -- the windows version will allow you to control the turbo while sitting still
BAFX or ObdLink MX+ adapters work well -- both ate bluetooth
Ok so throttle sounds typical I can live with that , and yes I have the bafx and forscan win, forscan will let you simulate the PCM signal to VGT solenoid ? if so can I look in the pep hole on top of the turbo and see if the solenoid is moving or the unison ring or the vanes?, now my truck is a 2007 6.0 forscan will do that??? that would be awesome.Monitor for Idle Verification Switch
you wont get any throttle response until the PCM gets verification from the pedal switch
a worn pedal can cause some of your problems -- but otherwise sounds pretty normal to me
ForScan is the goto tool for these trucks -- the windows version will allow you to control the turbo while sitting still
BAFX or ObdLink MX+ adapters work well -- both ate bluetooth
Dam ya learn something everyday LOVE IT, I'm going out there now F-yeah How to use Output Control mode in FORScan 2.2.* - FORScan forumMonitor for Idle Verification Switch
you wont get any throttle response until the PCM gets verification from the pedal switch
a worn pedal can cause some of your problems -- but otherwise sounds pretty normal to me
ForScan is the goto tool for these trucks -- the windows version will allow you to control the turbo while sitting still
BAFX or ObdLink MX+ adapters work well -- both ate bluetooth
Yes to all thatOk so throttle sounds typical I can live with that , and yes I have the bafx and forscan win, forscan will let you simulate the PCM signal to VGT solenoid ? if so can I look in the pep hole on top of the turbo and see if the solenoid is moving or the unison ring or the vanes?, now my truck is a 2007 6.0 forscan will do that??? that would be awesome.
ForScan is handy to mess around with controlling parts of the truck
Ok heres what I did , first got it all set up the VGT (control) and VGT read KOEO got under the hood and yes i could feel and hear it actuating the VGT solenoid when I would move the slide bar in control window, then next I put MAP (read), EBP (read) and engine rpm read and control, KOER set rpm to first tick it raised rpm's to 1100 ish and then moved the slid bar for the VGT 85%~50%~15% back and forth a few times and watching the MAP and EBP #'s I did not see any change in the MAP or the EBP #'s and did not hear any tone changes in the motor. I don't know **** about this but my limited understanding thinks I should have seen or heard some kind of change ? or am I off in the weeds here ?Yes to all that
ForScan is handy to mess around with controlling parts of the truck
Just go 99 - 100 on the control
this is a quirk of ForScan, it will fully open and fully close the VGT
you should hear the exhaust goto a deep sound, then to the jet engine
yeah, map and ebp should have been changing
All this may mean the solenoid is not getting control voltage or the unison ring is stuck or the solenoid has a hydraulic problem
what you are doing is commanding the vgt, it then has to respond
you could use a small light bulb in the harness to see if the brightness changed -- like a #194 or 168
this is a quirk of ForScan, it will fully open and fully close the VGT
you should hear the exhaust goto a deep sound, then to the jet engine
yeah, map and ebp should have been changing
All this may mean the solenoid is not getting control voltage or the unison ring is stuck or the solenoid has a hydraulic problem
what you are doing is commanding the vgt, it then has to respond
you could use a small light bulb in the harness to see if the brightness changed -- like a #194 or 168
I like it that sounds like a plain, that's exactly what I'm trying to do , confirm that the ring is moving or not and to what degree if possible. Thank you!Just go 99 - 100 on the control
this is a quirk of ForScan, it will fully open and fully close the VGT
you should hear the exhaust goto a deep sound, then to the jet engine
yeah, map and ebp should have been changing
All this may mean the solenoid is not getting control voltage or the unison ring is stuck or the solenoid has a hydraulic problem
what you are doing is commanding the vgt, it then has to respond
you could use a small light bulb in the harness to see if the brightness changed -- like a #194 or 168
Yep did the forscan control with it out and watched the solenoid move through it's paces 0%-20%-50% etc , then put back warm motor rpm's 2000ish forscan commanded and I could hear and the rpm would rise and fall with the % commanded seems to be working well. cleaned the EBP sen's & tube got the EBP back in and at first cold start the VGT only 65-75% but by the time i got the forscan running it went down to 15%. took some vid's cold , warm and WOT she ran GREAT but it wont let me up load .mp4 files WTF. the good news is after cleaning the EBP sen's the EBP % are up a bit and after driving 50-60 miles with multi starts and stops and long idles NO MORE P0299 or CEL and it does seem as though it makes boost sooner then it did It will still some times go to VGT85% or 15% at an idle but I'm very happy at the moment if it stays this way it's a WIN, I'm guessing the EBP is on it's way out.Just go 99 - 100 on the control
this is a quirk of ForScan, it will fully open and fully close the VGT
you should hear the exhaust goto a deep sound, then to the jet engine
yeah, map and ebp should have been changing
All this may mean the solenoid is not getting control voltage or the unison ring is stuck or the solenoid has a hydraulic problem
what you are doing is commanding the vgt, it then has to respond
you could use a small light bulb in the harness to see if the brightness changed -- like a #194 or 168
1 - 20 of 26 Posts
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