2005 6.0 runs, starts, idles great no power!
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2005 6.0 runs, starts, idles great no power!
my problem child is still not behaving, i've done everything and the initial problem of no power remains, yes i even rebuilt the engine! it's a long sad story of amateurs with a steep learning curve but the fact remains that it still doesn't run right. i even took it to a dealer and gave them 4500 and got it back with no power. that was 3 years ago and i just parked it until i had the motivation and a few extra bucks to work on it some more. so here're the symptoms:
no power before 2000 rpm
no smoke
boost pressure doesn't ever exceed 20
i bought the AE program with the ford upgrade and recorded the last session, driving it as hard as it would go.
i've reviewed many threads over the years but haven't found my solution, i'm hoping that it might have been found recently.
no power before 2000 rpm
no smoke
boost pressure doesn't ever exceed 20
i bought the AE program with the ford upgrade and recorded the last session, driving it as hard as it would go.
i've reviewed many threads over the years but haven't found my solution, i'm hoping that it might have been found recently.
Lead Driver
Joined: Feb 2011
Posts: 8,241
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From: L.A. (Lower Alabama)
Ok Bill, I'll take a stab at it. EBP actual lagging so far behind desired? Or desired being so high in the first place. Throttle position was never over 50ish but with no load it isn't going to boost up anyway.
Remember when we played this game with my truck? Same issue and I was posting graphs and tables and monitoring and suspecting everything. Finally put a set of injectors in it (thanks again TD) and it ran great and is still doing good.
Remember when we played this game with my truck? Same issue and I was posting graphs and tables and monitoring and suspecting everything. Finally put a set of injectors in it (thanks again TD) and it ran great and is still doing good.
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the problem with either this program (AE) or the 2005 sensor array is that the EBP desired is in psi and the actual is in volts, i saw it too but cannot find an actual EBP in psi. so today I'm gathering up the tools to get an accurate fuel pressure and a boost pressure. I'm concerned that the VGT is not closing down the aperture. the sensor reads 85% at idle but i know that it isnt actual as there is no feedback from the solenoid. haha, disconnected it while running and the numbers still changed. so boost pressure and fuel pressure appear to be the information necessary. oh, and im going to need an alternator i believe, didnt that cure somebodies slow running 6.0?
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There was a very long thread about this same problem, i thought it was yours, Rusty, that was solved by changing the alternator. did I miss something? oh and bye the way, this truck has the whopping total of 180k miles with 3 hpop replacements, 2 of which occurred before i bought the truck. i got to put about 30k miles on it before it died. since when would injectors fail all at the same time and wouldnt they indicate with misfires? i did clean them up when i rebuilt the engine and replaced the damaged connectors. ford replaced the wiring harness and didnt see any injector problems.
Lead Driver
Joined: Feb 2011
Posts: 8,241
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From: L.A. (Lower Alabama)
At one point I did put an alternator on it and drivability improved but as bad as I wanted it to be the fix, it wasn't. the injectors proved to be the problem. The odd readings that didn't make sense also straighten out when they were replaced.
Just to condense two long threads into a paragraph, Toreador Diesel (a member here) looked at it with AE and and told me it had at least two maybe more bad injectors but couldn't say for sure which ones. I never asked but I think he was looking at FPW and it was high across the board. I never saw him look at the cylinder balance test (if he did) The truck ran VERY sluggish (barely drivable) and at the same time was getting terrible mileage. I think I understood that if numerous injectors are crapping out, at some point the cylinder contribution compensation strategy pulls the remaining good injectors BACK in an attempt to balance them. Result is fair idle, low power (improving somewhat at higher rpm), and very poor mileage. I had two cylinder balance codes come and go but no high/low injector codes, misfire count was always zero, and no Check Engine Light.
I haven't seen him post lately but maybe TD can offer a more complete explination if he sees this post.
Just to condense two long threads into a paragraph, Toreador Diesel (a member here) looked at it with AE and and told me it had at least two maybe more bad injectors but couldn't say for sure which ones. I never asked but I think he was looking at FPW and it was high across the board. I never saw him look at the cylinder balance test (if he did) The truck ran VERY sluggish (barely drivable) and at the same time was getting terrible mileage. I think I understood that if numerous injectors are crapping out, at some point the cylinder contribution compensation strategy pulls the remaining good injectors BACK in an attempt to balance them. Result is fair idle, low power (improving somewhat at higher rpm), and very poor mileage. I had two cylinder balance codes come and go but no high/low injector codes, misfire count was always zero, and no Check Engine Light.
I haven't seen him post lately but maybe TD can offer a more complete explination if he sees this post.
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I just wanted to run this by everyone before i threw 15 more benjamins at this problem. the truck is running about 80%, mileage is about 13, there are no leaks in the turbo system yet turbo is obvious, you can hear it all the time even at idle and you can hear it wind down after the engine is turned off.
low end torque is about 50% until you hit about 1500 rpm then it kicks in.
engine idles at 900
fuel pressure is 60+
the numbers on the first chart havent changed.
Are we down to Injectors now?
low end torque is about 50% until you hit about 1500 rpm then it kicks in.
engine idles at 900
fuel pressure is 60+
the numbers on the first chart havent changed.
Are we down to Injectors now?