Boost problem *** UPDATE ***
Thread Starter
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Elder User
Joined: May 2010
Posts: 691
Likes: 0
From: Ohio
zipExport-2017-02-14_07-03-667.zip This was from my way home this morning. cruise set at 55 then I started the log file.
Lead Driver
Joined: May 2014
Posts: 6,545
Likes: 13
From: Virginia Beach VA
Sorry Will. I'll look at the morning zip file this morning, was a rough day yesterday at work, visited the Vet last night.
I do see the first log file shows EBP dropped and RPM was constant. Try wiggling the wire to EBP and see if you can force the change while watching Torque in real time.
Can't remember, are you EGR deleted?
I do see the first log file shows EBP dropped and RPM was constant. Try wiggling the wire to EBP and see if you can force the change while watching Torque in real time.
Can't remember, are you EGR deleted?
Thread Starter
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Elder User
Joined: May 2010
Posts: 691
Likes: 0
From: Ohio
Sorry Will. I'll look at the morning zip file this morning, was a rough day yesterday at work, visited the Vet last night.
I do see the first log file shows EBP dropped and RPM was constant. Try wiggling the wire to EBP and see if you can force the change while watching Torque in real time.
Can't remember, are you EGR deleted?
I do see the first log file shows EBP dropped and RPM was constant. Try wiggling the wire to EBP and see if you can force the change while watching Torque in real time.
Can't remember, are you EGR deleted?
Lead Driver
Joined: May 2014
Posts: 6,545
Likes: 13
From: Virginia Beach VA
Dog will be fine, thanks for asking.
For today and tomorrows drive, display EBP, Boost, MAP and VRef. I want to see if there's a correlation. VRef should be 4.8-5.0v. Lets see if VRef remains steady when the boost issue happens.
MAP-BARO=Boost and looking at the morning drive file, MAP is fluctuating when it occurs, BARO is constant and boost drops. Have you a real gauge for boost as the digital display only does the math and that's what it displays. Curious to see real boost number, not necessary to buy a gauge.
When it happens, can you tell the boost comes off and trucks down on power? Engine noise change? Did you clean the MAP sensor with something or just brush it off and replaced the hose leading to it?
For today and tomorrows drive, display EBP, Boost, MAP and VRef. I want to see if there's a correlation. VRef should be 4.8-5.0v. Lets see if VRef remains steady when the boost issue happens.
MAP-BARO=Boost and looking at the morning drive file, MAP is fluctuating when it occurs, BARO is constant and boost drops. Have you a real gauge for boost as the digital display only does the math and that's what it displays. Curious to see real boost number, not necessary to buy a gauge.
When it happens, can you tell the boost comes off and trucks down on power? Engine noise change? Did you clean the MAP sensor with something or just brush it off and replaced the hose leading to it?
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Thread Starter
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Elder User
Joined: May 2010
Posts: 691
Likes: 0
From: Ohio
Dog will be fine, thanks for asking.
For today and tomorrows drive, display EBP, Boost, MAP and VRef. I want to see if there's a correlation. VRef should be 4.8-5.0v. Lets see if VRef remains steady when the boost issue happens.
MAP-BARO=Boost and looking at the morning drive file, MAP is fluctuating when it occurs, BARO is constant and boost drops. Have you a real gauge for boost as the digital display only does the math and that's what it displays. Curious to see real boost number, not necessary to buy a gauge.
When it happens, can you tell the boost comes off and trucks down on power? Engine noise change? Did you clean the MAP sensor with something or just brush it off and replaced the hose leading to it?
For today and tomorrows drive, display EBP, Boost, MAP and VRef. I want to see if there's a correlation. VRef should be 4.8-5.0v. Lets see if VRef remains steady when the boost issue happens.
MAP-BARO=Boost and looking at the morning drive file, MAP is fluctuating when it occurs, BARO is constant and boost drops. Have you a real gauge for boost as the digital display only does the math and that's what it displays. Curious to see real boost number, not necessary to buy a gauge.
When it happens, can you tell the boost comes off and trucks down on power? Engine noise change? Did you clean the MAP sensor with something or just brush it off and replaced the hose leading to it?
Thread Starter
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Elder User
Joined: May 2010
Posts: 691
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From: Ohio
Thats where I was looking but didn't want to toss dollars at it without being sure. I'll data log my trip to work again tonight and post up file when I get home tomorrow morning. Have a good day talk to you tomorrow. Thanks
Postmaster
Joined: Aug 2015
Posts: 3,910
Likes: 18
From: NW IA
Did you take the hose off both ends, blow through it and check to make sure nothing is sticking inside the port of the sensor itself?
Oops, I see you used a new hose, so no problem there.
Thread Starter
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Elder User
Joined: May 2010
Posts: 691
Likes: 0
From: Ohio
Replaced the hose and used trimming wire to clean port out. Never even removed the MAP sensor. Intake should be clean the EGR was deleted long ago.
Lead Driver
Joined: May 2014
Posts: 6,545
Likes: 13
From: Virginia Beach VA
Any codes? Is Torque the only reader or do you have ForScan? If not, download ForScan for Windows, set the comport correctly to see the OBD dongle and scan it. It does a really good job of a deep scan, ECM, PCM and everything.
Posting Guru
Joined: Dec 2016
Posts: 1,284
Likes: 2
From: Bozeman MT
My take on your log file, Row 22 of the Log:
The air management looks fine.
BUT, fuel management changes:
The ICP Volts drop causing less power - then ECM is commanding VGT to increase in order to compensate and keep MPH.
The air management looks fine.
BUT, fuel management changes:
The ICP Volts drop causing less power - then ECM is commanding VGT to increase in order to compensate and keep MPH.