No power 6.0 psd
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7th Gear
Joined: Dec 2025
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No power 6.0 psd
Hello all, I recently rebuilt the engine in my 2007 6.0. Main bearings, rod bearings, piston rings, every sensor and oring as well.
Since I put it back together, it has VERY little power until about 1500 rpm. Then dumps smoke and rev quickly.
I have tried swapping known good parts with following: Good hpop, FICM, PCM, new filters, 3 different icp sensors, icp pig tail, ipr valve.
is it possible I timed it wrong? I thought I wouldn’t have cam/crank sync…
ICP will slowly climb then take off in relation to the rpms. Ebp, and boost sensor are at 15psi warmed up. Turbo is new and has been checked.
Since I put it back together, it has VERY little power until about 1500 rpm. Then dumps smoke and rev quickly.
I have tried swapping known good parts with following: Good hpop, FICM, PCM, new filters, 3 different icp sensors, icp pig tail, ipr valve.
is it possible I timed it wrong? I thought I wouldn’t have cam/crank sync…
ICP will slowly climb then take off in relation to the rpms. Ebp, and boost sensor are at 15psi warmed up. Turbo is new and has been checked.
Thread Starter
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7th Gear
Joined: Dec 2025
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that’s just ebp and maf psi sorry not boost sensor. It’s makes 28 psi once it gets past 1500. It’s definitely fuel or hpo related
Hotshot
Joined: Apr 2010
Posts: 19,066
Likes: 240
From: Saratoga Springs,UT
Post ICP & IPR @ KOEO
Post ICP & IPR @ Idle @ normal temp in park or neutral A/C off
Post those again ICP & IPR @ 2500rpm in park @ normal temp A/C off
In fact post all sensor data this way for any sensor
Post ICP & IPR @ Idle @ normal temp in park or neutral A/C off
Post those again ICP & IPR @ 2500rpm in park @ normal temp A/C off
In fact post all sensor data this way for any sensor
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7th Gear
Joined: Dec 2025
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It’s not letting me post a pic, but
icp 570 ipr 24% warm at idle
icp 700 ipr 30% warm in drive
also starts fine hot/cold no misses or anything.
icp 570 ipr 24% warm at idle
icp 700 ipr 30% warm in drive
also starts fine hot/cold no misses or anything.
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Hotshot
Joined: Apr 2010
Posts: 19,066
Likes: 240
From: Saratoga Springs,UT
Your video sounds like normal spools time for turbo
turbos take a second or two to fully kick in
I may missing something from video though
all sensor testing in park or neutral for this first round of tests nothing in drive for first part test
Here is Ford spec sheet follow directions top left pdf
Last edited by BLADE35; Dec 9, 2025 at 10:27 PM.
Thread Starter
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7th Gear
Joined: Dec 2025
Posts: 7
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Your video sounds like normal spools time for turbo
turbos take a second or two to fully kick in
I may missing something from video though
all sensor testing in park or neutral for this first round of tests nothing in drive for first part test
Here is Ford spec sheet follow directions top left
turbos take a second or two to fully kick in
I may missing something from video though
all sensor testing in park or neutral for this first round of tests nothing in drive for first part test
Here is Ford spec sheet follow directions top left
I’ll have my snap on scanner tomorrow to do more tests. Turbo is fine, there is low/ slow fuel output until it reaches 1500 rpm.
foot to the floor, no smoke, takes about 2-3 seconds to reach 1500, then dumps smoke and revs very quickly. Icp builds as the rpms slowly build, once 1500 rpm is reached icp spikes to 3500.
Token Redneck
Joined: Jun 2007
Posts: 9,339
Likes: 349
From: Breckenridge, TX
Put a fuel pressure gauge on and rule out the regulator spring hanging up. Which it's probably not if it runs fine on the top end. The 6.0 can start and idle on single digit fuel pressure, but it will never spool up like yours eventually does. Since it's a mechanical regulator the odds of being open too far at low draw and closing off at higher is unlikely unless your fuel pump is jacked.
Have you unplugged the MAF, MAP, EBP and BARO and run on the inferred values? EBP especially can do this exact thing. I'd have to pull the PC/ED manual but even if using an inferred strategy I think a bum sensor or chaffed wires can mess with the Vref signal if it shorts and goes out of range. Some scopes also pull the inferred data (specifically ICP_psi) and don't calculate based on the actual sensor voltage signal, but I'd think a Snap On would have the correct PID programed. Either way pulling connectors is free and you can confirm on the scope if the output changes on those four.
Have you unplugged the MAF, MAP, EBP and BARO and run on the inferred values? EBP especially can do this exact thing. I'd have to pull the PC/ED manual but even if using an inferred strategy I think a bum sensor or chaffed wires can mess with the Vref signal if it shorts and goes out of range. Some scopes also pull the inferred data (specifically ICP_psi) and don't calculate based on the actual sensor voltage signal, but I'd think a Snap On would have the correct PID programed. Either way pulling connectors is free and you can confirm on the scope if the output changes on those four.
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