Need help
Hotshot
Joined: Apr 2010
Posts: 19,071
Likes: 240
From: Saratoga Springs,UT
Your Not getting the whole Storey the 5 Volts is just the V-REF signal its good to know that the vref signal is getting there though
• The PCM sends a Vref of 5.0 volts
to the engine sensors except for
CMP and CKP which generate
voltage through the collapse of a
magnetic field.
• The PCM uses 5 volts as the
reference voltage to maintain
consistency throughout all
operating conditions.
• The Vref is conditioned by the
sensors then returned to the PCM
for use in determining the fueling
to the engine sensors except for
CMP and CKP which generate
voltage through the collapse of a
magnetic field.
• The PCM uses 5 volts as the
reference voltage to maintain
consistency throughout all
operating conditions.
• The Vref is conditioned by the
sensors then returned to the PCM
for use in determining the fueling
strategy.
You need to test the signal return and compare the voltage you get to the scale in the sensor overveiw in the 6.0L Bible
The best way is to get a scangaugeII or AutoEnginuty with ford bundle and test at KOEO and Low Idel and again at High Idel. I suppose you could do with a DVM but you will need a helper at High Idel
Do to the fact the sensors need to be within 0.5psi of each other might be tuff to use a Volt reading with a converting from scale. And maybe you could just compare the volt readings to get an Idea But Im Not shure if each sensor modifys the volt readings the same or equall since there ALL pressure sensors I think they each work the same but not shure
Postmaster
Joined: Jan 2008
Posts: 3,174
Likes: 10
From: Kansas City MO
Bump. My truck has consistently continued the issue over 1900' in elevation. Has the issue been resolved axle? I'm replacing my engine, and the people I ordered it from said that there is an adjustment procedure for the vgt. Has anyone heard of this. I'm wondering if I just had my chain yanked.
Thread Starter
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New User
Joined: Mar 2012
Posts: 10
Likes: 0
run6.0run, no my issue has never been solved, just kinda been dealing with it cause i cant seem to get any answers. I am at or over the 2000 feet elevation most of the time and it seems if i am pulling a hill it will do it if I dont gear down and its almost lugging a bit, if it starts to do it I just put my foot into it untill it gears down then it stops and runs great again.
Postmaster
Joined: Jan 2008
Posts: 3,174
Likes: 10
From: Kansas City MO
I'm wondering if its a maf issue. I thought I read something in diesel power, it was one of the diesel power challenge trucks, and they had a boost fooler to combat an issue that sounded like what we are experiencing.
Thread Starter
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New User
Joined: Mar 2012
Posts: 10
Likes: 0
Would yours stop if you got it down a gear too? Was it only at higher elevations? How can you adjust the vgt? Mine did it with the stock turbo and I was sure it was a turbo issue so I put in the powermax and it still continued. I had a green cold air intake when it started then went back to stock and now have a banks and it has done it on all three. Maf makes sense though.
Hotshot
Joined: Apr 2010
Posts: 19,071
Likes: 240
From: Saratoga Springs,UT
Would yours stop if you got it down a gear too? Was it only at higher elevations? How can you adjust the vgt? Mine did it with the stock turbo and I was sure it was a turbo issue so I put in the powermax and it still continued. I had a green cold air intake when it started then went back to stock and now have a banks and it has done it on all three. Maf makes sense though.
05+trucks dont have a MAF Not shure about 04
You have to get the Operating Values for sensors Below take the reading at KOEO & Low Idel & High Idel
BARO
MAP
EBP
Maf sensor too if you have one
My Bet is on one of these sensors being Bad
You need a gauge that reads Live Data
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Postmaster
Joined: Jan 2008
Posts: 3,174
Likes: 10
From: Kansas City MO
Performance machine told me that I could adjust the vgt. I told him I'd like to know how if so. He said he would put a write up on it with my engine. I think they're full of it. But, I never had the issue on a stock turbo. But I had to drive with my stock one broken ( i was half way up vail pass and i went ahead n pulled the grade, loaded) and wasn't sure that when the old one broke, it didn't mess something else up. I've only seen this issue with the power max. I thought my issue might be related to the powermax with a manual trans. Btw, what is the sensor that's on the air intake plumbing before the turbo, I always thought it was the maf.
Lead Driver
Joined: Mar 2010
Posts: 5,505
Likes: 256
From: Woodbridge, Ontario, CA
It IS the MAF sensor (as well as IAT #1). The only 6.0L engine that doesn't use a MAF is a later-build '05 model year. For '06 and '07 the MAF sensors returned.
Postmaster
Joined: Jan 2008
Posts: 3,174
Likes: 10
From: Kansas City MO
I need to get out my old diesel power mags and find the article that mentioned the turbo prob. I remember that they said this guys truck was having issues in the high elevation(they were in Colorado) so they added something, can't remember what it was. Axel, have you had your truck in any lower elevation and been able to replicate the popping? I live at 900' and my truck never has done it here. Only around 1900' n above.
Hotshot
Joined: Apr 2010
Posts: 19,071
Likes: 240
From: Saratoga Springs,UT
I thought 05+ none used Maf Now I know the whole story
So another way to tell would be to verify the sensor itself after the Air Filter
6 wires sensor would be MAF/IAT
2 wire IAT Only
Postmaster
Joined: Jan 2008
Posts: 3,174
Likes: 10
From: Kansas City MO
Would yours stop if you got it down a gear too? Was it only at higher elevations? How can you adjust the vgt? Mine did it with the stock turbo and I was sure it was a turbo issue so I put in the powermax and it still continued. I had a green cold air intake when it started then went back to stock and now have a banks and it has done it on all three. Maf makes sense though.
Postmaster
Joined: Jan 2008
Posts: 3,174
Likes: 10
From: Kansas City MO
There is NO WAY to Manualy adjust the VGT Its electronicaly controlled by the sensors Listed Below
05+trucks dont have a MAF Not shure about 04
You have to get the Operating Values for sensors Below take the reading at KOEO & Low Idel & High Idel
BARO
MAP
EBP
Maf sensor too if you have one
My Bet is on one of these sensors being Bad
You need a gauge that reads Live Data
05+trucks dont have a MAF Not shure about 04
You have to get the Operating Values for sensors Below take the reading at KOEO & Low Idel & High Idel
BARO
MAP
EBP
Maf sensor too if you have one
My Bet is on one of these sensors being Bad
You need a gauge that reads Live Data