VGT %
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Laughing Gas
Joined: Jan 2012
Posts: 1,103
Likes: 1
From: Lakeland, TN
VGT %
I programmed VGT % into my ScanGauge II tonight. It shows 85 (percent, I presume?) at idle, 55 or so at highway speeds, and once showed 46 when I quickly lifted my foot off the pedal. I never saw it go above 85. First, is this normal? Second, what is VGT % telling me?
Senior User
Joined: Dec 2011
Posts: 316
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I beleive thats good numbers. If u have doubts,take the turbo off . Once removed take the center band clamp off. Remove the hotside and go to chipping out the carbon and rust....more often times than not,turbos are diagnosed as bad because the veins are sticking.
Thread Starter
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Laughing Gas
Joined: Jan 2012
Posts: 1,103
Likes: 1
From: Lakeland, TN
Nah, not that curious. I assume that the VGT % is percent closed, as in if you could push it hard enough to open the vanes all the way up, then the VGT % would be zero percent. Correct?
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Answer : Yes
Sean
I'm hitting easy street
Joined: Nov 2009
Posts: 6,395
Likes: 27
From: Central Oregon
The VGT reading is a "desired" reading.
In the past, I was told with engine hot and at idle, my reading should be under 80%. Mine was like yours. Some said I had an issue with the vanes sticking, cause the PCM wasn't seeing enough EBP pressure, so it was requesting more. (Ford states 60-82% at idle)
Well, I since put in a new turbo, Powermax, and guess what? It still reads at around 85%.
So, I quit worrying about it! LOL
Here is a good look at the turbo and diagnostics.
http://www.fordtechservice.dealercon...6lvgtguide.pdf
In the past, I was told with engine hot and at idle, my reading should be under 80%. Mine was like yours. Some said I had an issue with the vanes sticking, cause the PCM wasn't seeing enough EBP pressure, so it was requesting more. (Ford states 60-82% at idle)
Well, I since put in a new turbo, Powermax, and guess what? It still reads at around 85%.
So, I quit worrying about it! LOL
Here is a good look at the turbo and diagnostics.
http://www.fordtechservice.dealercon...6lvgtguide.pdf
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Thread Starter
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Laughing Gas
Joined: Jan 2012
Posts: 1,103
Likes: 1
From: Lakeland, TN
The VGT reading is a "desired" reading.
In the past, I was told with engine hot and at idle, my reading should be under 80%. Mine was like yours. Some said I had an issue with the vanes sticking, cause the PCM wasn't seeing enough EBP pressure, so it was requesting more. (Ford states 60-82% at idle)
Well, I since put in a new turbo, Powermax, and guess what? It still reads at around 85%.
So, I quit worrying about it! LOL
Here is a good look at the turbo and diagnostics.
http://www.fordtechservice.dealercon...6lvgtguide.pdf
In the past, I was told with engine hot and at idle, my reading should be under 80%. Mine was like yours. Some said I had an issue with the vanes sticking, cause the PCM wasn't seeing enough EBP pressure, so it was requesting more. (Ford states 60-82% at idle)
Well, I since put in a new turbo, Powermax, and guess what? It still reads at around 85%.
So, I quit worrying about it! LOL
Here is a good look at the turbo and diagnostics.
http://www.fordtechservice.dealercon...6lvgtguide.pdf
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Brett Foote
I'm hitting easy street
Joined: Nov 2009
Posts: 6,395
Likes: 27
From: Central Oregon
That is about normal highway %.
Romp on it! You can see it get down to 14%. I have anyway.
Towing up grades with my TT at around 8000#, I will see in the 30's.
Normally, mine runs at highway speeds and minor grades here and there, 48-55%.
Edit: need to add, when I pull up to a light, it will be in the high 60's low 70's. Only in park will it rise to the 80's.
Edit: my 'P' key has issues!!! LOL
Romp on it! You can see it get down to 14%. I have anyway.
Towing up grades with my TT at around 8000#, I will see in the 30's.
Normally, mine runs at highway speeds and minor grades here and there, 48-55%.
Edit: need to add, when I pull up to a light, it will be in the high 60's low 70's. Only in park will it rise to the 80's.
Edit: my 'P' key has issues!!! LOL
Elder User
Joined: Jul 2012
Posts: 834
Likes: 0
From: tonopah, az
85% is all the way closed to aid in warming up the engine, 15% is all the way open from what i have read anyways
Thread Starter
|
Laughing Gas
Joined: Jan 2012
Posts: 1,103
Likes: 1
From: Lakeland, TN
That is about normal highway %.
Romp on it! You can see it get down to 14%. I have anyway.
Towing up grades with my TT at around 8000#, I will see in the 30's.
Normally, mine runs at highway speeds and minor grades here and there, 48-55%.
Edit: need to add, when I pull up to a light, it will be in the high 60's low 70's. Only in park will it rise to the 80's.
Edit: my 'P' key has issues!!! LOL
Romp on it! You can see it get down to 14%. I have anyway.
Towing up grades with my TT at around 8000#, I will see in the 30's.
Normally, mine runs at highway speeds and minor grades here and there, 48-55%.
Edit: need to add, when I pull up to a light, it will be in the high 60's low 70's. Only in park will it rise to the 80's.
Edit: my 'P' key has issues!!! LOL
Hotshot
Joined: Apr 2010
Posts: 19,072
Likes: 242
From: Saratoga Springs,UT
VGT% here the Value
VGTDC # 0 73 43 0 - 100 PERCENT Turbo Duty Cycle
First # is at KOEO
2nd# is Idel
3RD# is 2500 rpm
Last 2 #s is Range
With the right stratigy if you idel long enough PCM will sweep the veins Most folks notice this by the Change in Tone in the Exhaust at Idel
VGTDC # 0 73 43 0 - 100 PERCENT Turbo Duty Cycle
First # is at KOEO
2nd# is Idel
3RD# is 2500 rpm
Last 2 #s is Range
With the right stratigy if you idel long enough PCM will sweep the veins Most folks notice this by the Change in Tone in the Exhaust at Idel
Thread Starter
|
Laughing Gas
Joined: Jan 2012
Posts: 1,103
Likes: 1
From: Lakeland, TN
VGT% here the Value
VGTDC # 0 73 43 0 - 100 PERCENT Turbo Duty Cycle
First # is at KOEO
2nd# is Idel
3RD# is 2500 rpm
Last 2 #s is Range
With the right stratigy if you idel long enough PCM will sweep the veins Most folks notice this by the Change in Tone in the Exhaust at Idel
VGTDC # 0 73 43 0 - 100 PERCENT Turbo Duty Cycle
First # is at KOEO
2nd# is Idel
3RD# is 2500 rpm
Last 2 #s is Range
With the right stratigy if you idel long enough PCM will sweep the veins Most folks notice this by the Change in Tone in the Exhaust at Idel
Thread Starter
|
Laughing Gas
Joined: Jan 2012
Posts: 1,103
Likes: 1
From: Lakeland, TN
The VGT reading is a "desired" reading.
In the past, I was told with engine hot and at idle, my reading should be under 80%. Mine was like yours. Some said I had an issue with the vanes sticking, cause the PCM wasn't seeing enough EBP pressure, so it was requesting more. (Ford states 60-82% at idle)
Well, I since put in a new turbo, Powermax, and guess what? It still reads at around 85%.
So, I quit worrying about it! LOL
Here is a good look at the turbo and diagnostics.
http://www.fordtechservice.dealercon...6lvgtguide.pdf
In the past, I was told with engine hot and at idle, my reading should be under 80%. Mine was like yours. Some said I had an issue with the vanes sticking, cause the PCM wasn't seeing enough EBP pressure, so it was requesting more. (Ford states 60-82% at idle)
Well, I since put in a new turbo, Powermax, and guess what? It still reads at around 85%.
So, I quit worrying about it! LOL
Here is a good look at the turbo and diagnostics.
http://www.fordtechservice.dealercon...6lvgtguide.pdf