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02-03-2019, 01:19 PM
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#1
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Name: coorsman2005
Title: i like beer
Status: Not Here
Join Date: Jun 2011
Location: blackwell,ok
Member`s Gallery
Posts: 784
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06 Cummins code p0148 no power
As title says. Code p0148 no power at high rpms pops out the exhaust. It did throw a crank pos sensor. Put in a known good one that code stopped. Heres some things i have done. I ran the valve lash just for the hell of it. They were a little loose not bad there at spec now.
Changed fca with known good one. Installed railplug. Crank pos sensor
I hooked up my rail gauge and when it first starts it spikes up to like 15k. Then slowly drops to around 8k and stays. Under full throttle it will hit 10k. Then when you let off it will spike to 12k. But it idles at 8 k constant. In neutral if you rev it it will hit 15k but not when driving
The owner of the truck replaced the lp with a stock in tank. And put new fuel filter and air filter.
Truck is bone stock besides strait pipe.
What are some thoughts of what could cause this
__________________
08 3500 qcsb 6.7 6 speed manual, valair DD, all deletes efi live, arp studs&rocker studs, Vulcan hg w/orings, max spool valve springs, max spoolpush rods, SB66.
2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
Last edited by coorsman2005; 02-03-2019 at 01:21 PM.
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02-04-2019, 08:53 AM
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#2
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Name: coorsman2005
Title: i like beer
Status: Not Here
Join Date: Jun 2011
Location: blackwell,ok
Member`s Gallery
Posts: 784
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Any thoughts?
Im going to try to make it today and check the torque on the jnjector tubes
__________________
08 3500 qcsb 6.7 6 speed manual, valair DD, all deletes efi live, arp studs&rocker studs, Vulcan hg w/orings, max spool valve springs, max spoolpush rods, SB66.
2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
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02-05-2019, 06:22 AM
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#3
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Name: coorsman2005
Title: i like beer
Status: Not Here
Join Date: Jun 2011
Location: blackwell,ok
Member`s Gallery
Posts: 784
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Anyone
__________________
08 3500 qcsb 6.7 6 speed manual, valair DD, all deletes efi live, arp studs&rocker studs, Vulcan hg w/orings, max spool valve springs, max spoolpush rods, SB66.
2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
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02-05-2019, 08:31 AM
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#4
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Name: Mark Nixon
Title: No Savior among the flesh
Status: Not Here
Join Date: Feb 2009
Location: Brownville, Nebraska
Member`s Gallery
Posts: 8,676
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Quote:
Originally Posted by coorsman2005
...I hooked up my rail gauge and when it first starts it spikes up to like 15k. Then slowly drops to around 8k and stays. Under full throttle it will hit 10k. Then when you let off it will spike to 12k. But it idles at 8 k constant. In neutral if you rev it it will hit 15k but not when driving...
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Is 15k rail pressure the MAX you have at any time?
If so, you have a leak somewhere.
I'd suspect CP3 or injectors.
Mark.
__________________
If you or I did business like the PEOPLE in government do business, we'd be put in jail. Government is coercive.
Anarchy: The state of existence where there are no masters & no slaves. Therefore, Anarchy means the ABSENCE OF SLAVERY, or, in other words, FREEDOM.
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02-06-2019, 04:12 AM
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#5
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Name: coorsman2005
Title: i like beer
Status: Not Here
Join Date: Jun 2011
Location: blackwell,ok
Member`s Gallery
Posts: 784
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Yep. And 15k is at startup. Like 12 after that. At full throttle the most i have seen is 10. Until you let off then it spikes 12.
__________________
08 3500 qcsb 6.7 6 speed manual, valair DD, all deletes efi live, arp studs&rocker studs, Vulcan hg w/orings, max spool valve springs, max spoolpush rods, SB66.
2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
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02-06-2019, 05:28 PM
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#6
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Name: Cummins6.7trip
Title: Green Behind the Ears
Status: Not Here
Join Date: Aug 2015
Location: Pa
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Posts: 76
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Might be a silly question but have you checked the oil level to see if its rising or a good thing to do would be a injector return fuel test.
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02-06-2019, 06:35 PM
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#7
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Name: mikmaze
Title: Too Much Time
Status: Not Here
Join Date: Apr 2009
Location: Fairfield NJ
Member`s Gallery
Posts: 4,292
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blown pressure releif valve? plug it and drive it accordingly.
__________________
04.5 Qcab shorty EVIL TWIN CP3's 100 % over nozzles, ats 3 piece, HTT 64 71 13 ss over S480, arp's , GOEREND , Hamilton 181 210 & valve springs, UDC beta
2006 Liberty CRD w/ GDE eco
'91 JD 1070 dzl
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02-06-2019, 07:20 PM
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#8
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Name: Gwoody
Title: Switchblade Turbos
Status: Not Here
Join Date: Jun 2007
Location: Seneca Missouri
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Posts: 414
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Unplug the rail pressure sensor with the truck running and the rail pressure should max out.
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02-06-2019, 09:01 PM
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#9
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Name: coorsman2005
Title: i like beer
Status: Not Here
Join Date: Jun 2011
Location: blackwell,ok
Member`s Gallery
Posts: 784
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Quote:
Originally Posted by Cummins6.7trip
Might be a silly question but have you checked the oil level to see if its rising or a good thing to do would be a injector return fuel test.
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Yes. Oil level is a little low. So its not making oil. This was one thing i was thinking myself.
__________________
08 3500 qcsb 6.7 6 speed manual, valair DD, all deletes efi live, arp studs&rocker studs, Vulcan hg w/orings, max spool valve springs, max spoolpush rods, SB66.
2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
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02-06-2019, 09:02 PM
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#10
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Name: coorsman2005
Title: i like beer
Status: Not Here
Join Date: Jun 2011
Location: blackwell,ok
Member`s Gallery
Posts: 784
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Quote:
Originally Posted by mikmaze
blown pressure releif valve? plug it and drive it accordingly.
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I removed the stock releif and installed plug. No change.
__________________
08 3500 qcsb 6.7 6 speed manual, valair DD, all deletes efi live, arp studs&rocker studs, Vulcan hg w/orings, max spool valve springs, max spoolpush rods, SB66.
2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
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02-06-2019, 09:05 PM
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#11
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Name: coorsman2005
Title: i like beer
Status: Not Here
Join Date: Jun 2011
Location: blackwell,ok
Member`s Gallery
Posts: 784
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Quote:
Originally Posted by Gwoody
Unplug the rail pressure sensor with the truck running and the rail pressure should max out.
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I did unplug the fca with no change. Also u swapped with a known good fca. Could the cp3 be taking a dump. I have never been around a truck with a bad cp3. What do they start out doing. I assumed they just totally quit like most other pumps.
__________________
08 3500 qcsb 6.7 6 speed manual, valair DD, all deletes efi live, arp studs&rocker studs, Vulcan hg w/orings, max spool valve springs, max spoolpush rods, SB66.
2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
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02-07-2019, 07:08 PM
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#12
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Name: Cummins6.7trip
Title: Green Behind the Ears
Status: Not Here
Join Date: Aug 2015
Location: Pa
Member`s Gallery
Posts: 76
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The few failing pumps I've seen started out as excessively long cranking to get it started.
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02-09-2019, 06:55 AM
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#13
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Name: Red Sleeper
Title: Too Much Time
Status: Not Here
Join Date: Aug 2009
Location: Lone Star State
Member`s Gallery
Posts: 4,582
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My dad’s CR lost a CP3 due to a plugged inlet screen on his aftermarket fuel pump. Low on power but still had enough fuel flow to crank normally and run. Just no damn power.
New CP3 restored years of slowly reduced power. Truck runs strong as ever now, some 375k later.
__________________
Nick J
'14 Silverado LTZ 5.3 4wd
'05 Cummins QCSB 4wd 48re
'91 Cummins w350 5spd
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02-09-2019, 10:04 AM
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#14
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Name: coorsman2005
Title: i like beer
Status: Not Here
Join Date: Jun 2011
Location: blackwell,ok
Member`s Gallery
Posts: 784
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Tinkering with this truck again. When I first started the truck this morning. Rail psi was idiling around 5k. I unplugged the fca. It spiked up full psi 25-30k. Plugged it back in psi slowly dropped back to normal.
Took the truck for a drive. As it hit operating temp it lossed power and rail psi. At full throttle it wouldn’t even hit 5k. When I got to my house I unplugged the fca. With no change in rail psi 3-5k idiling. Reved it up plugged in or unplugged 8 k max.
What you guys think now.
__________________
08 3500 qcsb 6.7 6 speed manual, valair DD, all deletes efi live, arp studs&rocker studs, Vulcan hg w/orings, max spool valve springs, max spoolpush rods, SB66.
2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
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02-10-2019, 08:42 AM
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#15
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Name: coorsman2005
Title: i like beer
Status: Not Here
Join Date: Jun 2011
Location: blackwell,ok
Member`s Gallery
Posts: 784
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Truck is fixed loose connector tubes. Runs great now no codes
__________________
08 3500 qcsb 6.7 6 speed manual, valair DD, all deletes efi live, arp studs&rocker studs, Vulcan hg w/orings, max spool valve springs, max spoolpush rods, SB66.
2008 megacab 4x4 dually 12v build in progress
1990 2wd d100 4bt nv5600 vailair single disk in progress
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02-10-2019, 09:28 AM
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#16
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Name: Mark Nixon
Title: No Savior among the flesh
Status: Not Here
Join Date: Feb 2009
Location: Brownville, Nebraska
Member`s Gallery
Posts: 8,676
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Hell, we talked about those in my last phone call and you just now looked at them?
At any rate, glad it's cooperating.
Mark.
__________________
If you or I did business like the PEOPLE in government do business, we'd be put in jail. Government is coercive.
Anarchy: The state of existence where there are no masters & no slaves. Therefore, Anarchy means the ABSENCE OF SLAVERY, or, in other words, FREEDOM.
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02-11-2019, 07:45 AM
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#17
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Name: 4x4dually
Title: Moderator
Status: Not Here
Join Date: Jan 2007
Location: Stillwater, OK
Member`s Gallery
Posts: 31,789
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How the hell did your tubes come loose?
__________________
Jory 2009 4x4 3500 MCLB
"There are people far less intelligent than you making a living doing this stuff." - Jeff Mumau
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02-11-2019, 07:57 AM
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#18
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Name: Mark Nixon
Title: No Savior among the flesh
Status: Not Here
Join Date: Feb 2009
Location: Brownville, Nebraska
Member`s Gallery
Posts: 8,676
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Not adequately tightened, then they loosened themselves with heat cycles.
It's actually fairly common, especially with the 5.9 connector tubes, as they are a bit flimsier.
Mark.
__________________
If you or I did business like the PEOPLE in government do business, we'd be put in jail. Government is coercive.
Anarchy: The state of existence where there are no masters & no slaves. Therefore, Anarchy means the ABSENCE OF SLAVERY, or, in other words, FREEDOM.
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