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Auto Eginuity recorded run, you guys see any red flags?
The engine install went pretty good. The truck seems to be running well also. I have been used to driving a chipped 6.4 so I know there is a huge difference. However I just feel that I have been having to put the pedal through the floor to make it go. At slower speeds like say 40 mph, 2500 rpm, my guage is only showing like 3 or 4 psi. Is that right? I did a road test this morning and recorded it with AE.
Can you guys take a look and tell me if something is messed up? I pulled the codes and this is what I got as well. But these could have been from the old engine. Not sure. Will have to clear and drive again.
3 or 4 lbs of what? Boost? I'm far from proficient at processing these numbers but I am picking it up, not me forte. But...it does look like the MAP's are a little anemic. Do you have an EGT gauge? It looks like the HPOP is working pretty good though.
3 or 4 lbs of what? Boost? I'm far from proficient at processing these numbers but I am picking it up, not me forte. But...it does look like the MAP's are a little anemic. Do you have an EGT gauge? It looks like the HPOP is working pretty good though.
3 or 4 psi of boost. Sorry. With help I did find that I had a bad EBP sensor, I have read this can cause the engine to possibly refuel?? So that is swapped out and is reading inline with the MAP sensor now. I will take it for a test drive here in a few. I do have a egt guage. I will report back after this next run.
Here is the second run. I still feel there is something a miss. Pedal to the floor EGT’s never went above 850 degrees. Fuel pressure dropped no lower then 58 psi. Maybe I am just crazy.
At 3:12:58 you have 28.9 lbs MAP with a base of 14.3 and a net of 14.6 lbs boost. Not setting the world on fire but more than what you are reading. I'd suspect a kink or blockage in your boost gauge feed. Also, you'll get the most boost under the worst of loads, uphill with a load on. Are you loading it? If you have an issue I'd look at fuel flow but it sounds like you have a fuel pressure gauge.
At 3:12:58 you have 28.9 lbs MAP with a base of 14.3 and a net of 14.6 lbs boost. Not setting the world on fire but more than what you are reading. I'd suspect a kink or blockage in your boost gauge feed. Also, you'll get the most boost under the worst of loads, uphill with a load on. Are you loading it? If you have an issue I'd look at fuel flow but it sounds like you have a fuel pressure gauge.
I haven’t ran it loaded yet and recorded. I pulled my cargo trailer and camper already but again throttle input seems to be more then I remember to get the stuff going. I will load up the trailer and record on the way to work tomorrow and see what we have. Maybe I have just lost the touch and need to relearn the truck. I just am trying to triple check before the 3 1/2 hour trip down to the campground on Friday.
Here is the latest. This is with pulling my cargo trailer that is approximately 6-7K pounds. Fuel pressure steady at 58 psi, egts never went over 1,000 degrees. I did a buzz test this morning that everything sounded great. A contribution test said PO284, #8 failed but if my memory serves me correctly isn’t that common?
You did hit 30 MAP at one point, that's almost 16 lbs of boost. I ran the buzz test too and it came up good, couldn't do the CCT because it requires a minimum oil temp of some sort. So...you're getting about 16 lbs boost there. Are you on a hill with it yet? Your highest boost numbers will come on a good hill climb, full throttle and higher RPMs. I have read that 20 is about the most you'll see with a stock truck. Everything else is pretty much stock, right? I don't know that 1000* EGTs is out of line for a stock truck but I never drove a stock one so I really don't know. Have you checked your boost feed line? Someone else really needs to chime in with their knowledge. I do see that your FIPW is staying down in the 2's for the most part and they are OK up to 3 or so. Additionally, you do have AD injectors with a PCM and an IDM for AB's, you would probably see some improvement by upgrading them.
I was wondering the same about the pcm. Hopefully more number friendly guys come and take a look. I appreciate your input for sure. I feel it’s gonna be something right in front of my face, that I am just not catching.
I cleaned up the data log, see below. I'm not so good at reading these logs so hopefully wiser noggins will chime in.
Only thing that stands out to me is the ICP duty cycle is low, maxing at like 35%. That ain't gonna go fast. Explains why the FIPW is squeaking out .28ms or so max. I guess there could be several reasons for that but I'd start with status of the IPR. New, old, found in a ditch? Also, condition of IPR harness and tinnerman nut?
Thank you for cleaning it up. I will inspect the IPR further tomorrow. It was the one that was on the engine when I got it. Engine has 73,000 miles on it.
The PCM doesn't make a difference for AB or AD injectors as they function identically. The IDM doesn't care either as it's possible to run any 7.3L from 1994.5 to 2003 on a 100A, 100, 110, or 120.
I have a couple of questions regarding the duty cycle:ICP...Don't the duty cycle parameters need to be adjusted in AE to something like 60% to get the desired reading? And while duty cycle shows low in that chart, ICP is good and goes up with RPM's, that sounds logical to me.
08-07-2018, 08:38 AM
