Turbo not spooling/working?
Thread Starter
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More Turbo
Joined: Oct 2012
Posts: 672
Likes: 8
From: Tampa, FL
Turbo not spooling/working?
Ok, today I changed the thermostat in my 04 6.0 and everything was doing great for several short trips (less than 10 miles total). I drove up to the 'depot tonight and everything was great on the way there, but on the way home I noticed a distinct lack of power that had previously been there in lower gears and I was blowing soot pretty good when that power wasn't present.
I got home turned it off, let it sit a bit and turned it back on. No pending codes, but when I restarted it, I didn't hear my favorite noise... the jet engine after 2 seconds of running.
I checked to make sure I hadn't blown a boot off, and I made sure the sensor going into the turbo was pushed in well.
This is an 04 that just had the EGR delete/oil cooler replacement along with a 4" exhaust completed last weekend. It's been running great until tonight. Are there any easy things to check before I take it to the shop?
I got home turned it off, let it sit a bit and turned it back on. No pending codes, but when I restarted it, I didn't hear my favorite noise... the jet engine after 2 seconds of running.
I checked to make sure I hadn't blown a boot off, and I made sure the sensor going into the turbo was pushed in well.
This is an 04 that just had the EGR delete/oil cooler replacement along with a 4" exhaust completed last weekend. It's been running great until tonight. Are there any easy things to check before I take it to the shop?
Thread Starter
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More Turbo
Joined: Oct 2012
Posts: 672
Likes: 8
From: Tampa, FL
Thanks for the response! Unfortunately, I'm a (barely) functioning 'tard when it comes to this engine, however, I'm learning very quickly.
I have a scangauge 2 that I can read, but don't have a boost gauge. I can check all the connections for sure, and spray some soapy water on the boots just to make sure I know what I know. Not sure what the IAT2 sensor is but I'll look it up. Thanks again!
I have a scangauge 2 that I can read, but don't have a boost gauge. I can check all the connections for sure, and spray some soapy water on the boots just to make sure I know what I know. Not sure what the IAT2 sensor is but I'll look it up. Thanks again!
Lead Driver
Joined: Sep 2012
Posts: 7,830
Likes: 96
From: Manteca,Ca
On the scangauge you will have to enter the numbers for boosthere they are
txd=07E0221440
rxf=046285140640
rxd=3010
mth=01220320ff6f
name=BST
IAT2 senser will be behind the fuel bowl in the intake
EBP senser will be off of the thermostat houseing ( right side) tube runs to the excust manafold
txd=07E0221440
rxf=046285140640
rxd=3010
mth=01220320ff6f
name=BST
IAT2 senser will be behind the fuel bowl in the intake
EBP senser will be off of the thermostat houseing ( right side) tube runs to the excust manafold
Thread Starter
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More Turbo
Joined: Oct 2012
Posts: 672
Likes: 8
From: Tampa, FL
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Elder User
Joined: Apr 2005
Posts: 907
Likes: 2
From: Jackson, TN
You might check the connector at the ebp sensor and also the connector on the vgt solenoid on the turbo. Also, look at the map sensor hose where it goes on the nipple on the passenger side of the intake manifold. If no problems are found at any of those places, you could have stuck vanes inside the turbo, a bad map sensor, bad vgt solenoid, or a few other possibilities.
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Lead Driver
Joined: Sep 2012
Posts: 7,830
Likes: 96
From: Manteca,Ca
Ok hokie , Its been awhile so I think you have to read( baro, to get the xx for bst (boost ) I gave you my numbers ,what elevation are you ,this could be the reasen for your bst # take a look at the x gauge book and then document. lets see from your gauge =
post like this at truck warm 190deg
koeo(key on engine off)
low ( idiol in park)
high ( 2500 rpm)
post= map,ICP,BST,ICPV,VGT(turbo duty cycle),
Hows the ficm vlt,batteries,alt. post those too.
If you need some of these Pids numbers theres a list in the Tech folders
post like this at truck warm 190deg
koeo(key on engine off)
low ( idiol in park)
high ( 2500 rpm)
post= map,ICP,BST,ICPV,VGT(turbo duty cycle),
Hows the ficm vlt,batteries,alt. post those too.
If you need some of these Pids numbers theres a list in the Tech folders
Thread Starter
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More Turbo
Joined: Oct 2012
Posts: 672
Likes: 8
From: Tampa, FL
Ok, I got up a bit earlier this morning before work and gave it another whirl. Reseated everything BUT the ebp sensor, because I couldn't get the damned thing off without removing a bunch of things that I don't have time for. So, I reseated the MAP sensor, the VGT solenoid sensor (which seems flimsy to me... doesn't sit quite like I'd expect it too), pulled the intake hoses, and was able to spin the turbo freely with no play in it.
Tonight I'll pull the hoses off and reseat the ebp sensor and look into pulling the ebt hose off and inspecting it.
Tonight I'll pull the hoses off and reseat the ebp sensor and look into pulling the ebt hose off and inspecting it.
Thread Starter
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More Turbo
Joined: Oct 2012
Posts: 672
Likes: 8
From: Tampa, FL
Update: I drove it to work this morning and the turbo is spooling up. So much that it blew off one of the hoses and I had to turn around to go home and reattach it.
So here's the fun: When the turbo's working, it's reading anywhere from 2 to upwards of 20 boost on the gauge while the EBP is only at 5. There are time where the turbo is NOT producing ANY boost and the EBP is 40+. There were times in my 20 mile commute where the smell of diesel was present inside the truck as well.
Oh, one last thing. Turbo farts almost every time I let off the gas, whether it's abruptly or slowly. Don't know if that helps at all in the diagnosis.
So here's the fun: When the turbo's working, it's reading anywhere from 2 to upwards of 20 boost on the gauge while the EBP is only at 5. There are time where the turbo is NOT producing ANY boost and the EBP is 40+. There were times in my 20 mile commute where the smell of diesel was present inside the truck as well.
Oh, one last thing. Turbo farts almost every time I let off the gas, whether it's abruptly or slowly. Don't know if that helps at all in the diagnosis.
Lead Driver
Joined: Sep 2012
Posts: 7,830
Likes: 96
From: Manteca,Ca
You will have to pull the air filter box out to get to the EBP and tube the MAF is on top of that same line dont forget to hook that back up also the filter minder on the side, Check the coolent for diesel smell and cross yeold fingers that diesel is not there, could be the filter cap is cracked may have to chase that one down.
VGT (duty cycle) bst
koeo= 0
low =73
high =43 or operating or 2500 rpm
you can take the senser off and tube and run some weed eater line thru the tube also check the senser end for plugged soot.
the IAT2 senser spray the Tip with carb cleaner not the ELECTRICAL sideand ware some safety glasses
that stuff burns like 
. 1 more thing check the CAC boots again both sides if theres a crack in them theres part of the issuie.
VGT (duty cycle) bst
koeo= 0
low =73
high =43 or operating or 2500 rpm
you can take the senser off and tube and run some weed eater line thru the tube also check the senser end for plugged soot.
the IAT2 senser spray the Tip with carb cleaner not the ELECTRICAL sideand ware some safety glasses
that stuff burns like . 1 more thing check the CAC boots again both sides if theres a crack in them theres part of the issuie.
Thread Starter
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More Turbo
Joined: Oct 2012
Posts: 672
Likes: 8
From: Tampa, FL
You will have to pull the air filter box out to get to the EBP and tube the MAF is on top of that same line dont forget to hook that back up also the filter minder on the side, Check the coolent for diesel smell and cross yeold fingers that diesel is not there, could be the filter cap is cracked may have to chase that one down.
VGT (duty cycle) bst
koeo= 0
low =73
high =43 or operating or 2500 rpm
you can take the senser off and tube and run some weed eater line thru the tube also check the senser end for plugged soot.
the IAT2 senser spray the Tip with carb cleaner not the ELECTRICAL sideand ware some safety glasses that stuff burns like . 1 more thing check the CAC boots again both sides if theres a crack in them theres part of the issuie.
VGT (duty cycle) bst
koeo= 0
low =73
high =43 or operating or 2500 rpm
you can take the senser off and tube and run some weed eater line thru the tube also check the senser end for plugged soot.
the IAT2 senser spray the Tip with carb cleaner not the ELECTRICAL sideand ware some safety glasses
that stuff burns like . 1 more thing check the CAC boots again both sides if theres a crack in them theres part of the issuie.No diesel smell in the coolant although it was just flushed and replaced less than a week ago when the EGR was deleted and oil cooler changed.
What I've done so far is to remove the EGR throttle butterfly plate (egr deleted) just to make sure it wasn't sticking. I pulled the EBP sensor off and looked down the tube (didn't remove it) and it looks clean... a lot cleaner than I expected. The sensor was clean as well, but I understand that doesn't mean it's good. I reinstalled everything and watched the EBP gauge go from 50 down to 5 in 2 second increments. When it got down to about 13, the turbo spooled up a bit.
I'm going to take out the filter housing again and double check the CAC boot under there... that's one I haven't done much with on second thought.
THANKS AGAIN!!!
Thread Starter
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More Turbo
Joined: Oct 2012
Posts: 672
Likes: 8
From: Tampa, FL
Ok, been doing some programming. Here are the readings.
Low idle:
MAP: 14.9
BST: 0.2- 0.5
EBP: 5.8
VGT: 54
BAR: 14.6
ICP: 580
ICV: .81
FMP: 48.5
FVP: 13.5
High Idle (2500):
MAP: 28.4
BST: 9.2
EBP: 5.8
VGT: 65
ICP: 1778
ICV: 1.8
FMP: 48.5
FVP: 13.5
KOEO:
MAP: 14.4
BST: 0.2
EBP: 5.8
VGT: 0
BAR: 14.6
ICP: 0
ICV: .22
FMP: 48.5
FVP: 12.0
Oh hey, how about that, my scan gauge didn't read the following codes that the SCT tuner did:
P0069
P0113
P0470
P0472
P0478
P1102
Guess I have some researching to do...
Low idle:
MAP: 14.9
BST: 0.2- 0.5
EBP: 5.8
VGT: 54
BAR: 14.6
ICP: 580
ICV: .81
FMP: 48.5
FVP: 13.5
High Idle (2500):
MAP: 28.4
BST: 9.2
EBP: 5.8
VGT: 65
ICP: 1778
ICV: 1.8
FMP: 48.5
FVP: 13.5
KOEO:
MAP: 14.4
BST: 0.2
EBP: 5.8
VGT: 0
BAR: 14.6
ICP: 0
ICV: .22
FMP: 48.5
FVP: 12.0
Oh hey, how about that, my scan gauge didn't read the following codes that the SCT tuner did:
P0069
P0113
P0470
P0472
P0478
P1102
Guess I have some researching to do...