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csv files attached... During my very expensive speeding ticket ride a little bit ago the truck was symptomatic but I did not get any lights or codes on the dash at any time... thanks for your help
A few more questions. How long has the current configuration of your rig been working well (new injectors, T500, DP tunes on the F6, etc.)?
What is the X/B mod?
Swamps stage 1 injectors - are those 160cc with stock nozzles?
This data is really curious. Pretty standard for the 1st third, except you are getting full ICP at only 39% pedal, though we don't know what the fuel pw is doing. Has that tune worked well for you in the past?
In the middle third, the data gets spiky, even before the ICP drops low and IPR% climbs quickly to 97%. And after that, the rig never really recovers, as episode after episode happens. ICP hits over 3800PSI at times, and even stays there for a bit. That would explain the P1209/1211 DTCs, but not why.
See how ICP, IPR and APP are spikey leading up to the event. Are you doing this with the pedal, or are you holding it steady?
Recommend another drive with more of a stock tune for those single shot injectors if you have one. Drive the same route and see what it does. Please add RPM, MFDES, FUELPW, MGP and IVS to your PIDS. You can drop the ICP volts. Let's see some idle data as well.
Also try a 20mph to 70mph WOT run where the speed limit allows, rolling into the pedal over 3 seconds, and hold it steady at 70mph if it will do it.
This is a tough one to remote diagnose. AE only puts out 1 data point a second, so that's harder to read. I'm trying to allow for that - the data might not be as spikey as it appears because of that low sample rate.
Engine oil level is at the fill line... I actually don't have stage one swamps anymore I have big injectors... I thought I had updated it on the website.. I have full force diesel 180cc 80% injectors... If you go back to the earlier part of the thread you can see the throttle pedal incorporated into the data...
Do I need to use something different to record data than auto enginuity? It's just what I already have.
At the fill line - so needs a quart or maybe 2? I'd top it off to make sure it's not a contributing factor to the low ICP at high demand.
Ok 180/80's - that explains the need for ICP to climb quickly, to keep some level of atomization. I have not seen much data with these larger nozzle injectors yet.
Yes sir - you have throttle pedal data - called accelerator pedal position or APP on the charts. I see I left off the labels - I went back and added them.
AE is fine - it's me being spoiled by high sample rate OBDII dongles and FORScan app. I think we will see enough with AE. If you can add more of the PIDs I noted, and take a couple more drives, additional data might help us narrow down the cause.
We need a clear timeline of when the X ran well, what mod/repair was done just before the issues you are seeing here began. With the stalling, the IPR valve replacement and ICP sensor replacement make sense. After that, pigtails and PCM to pigtail wiring checks with a meter while moving the wires are a good troubleshooting step, but maybe a longshot. That the ICP goes below normal idle value is interesting - I'd normally blame a sticking IPR for this behavior.
I mean it's at the full line... The oil is full... So it ran fine in its current configuration... Then randomly started not being able to idle without stalling... Replaced icp sensor with aftermarket one... Ran without stalling for a few days then started again so I put a ford sensor in and it improved some then put a 2nd ford sensor in and it ran and idled fine... At this time I didn't notice the current problem but it may have been present.. I don't drive the truck often enough at highway speeds to realize this problem... I took a load to the dump and it started doing this problem... It seemed like it was a pedal problem so I replaced the pedal assembly with a new ford assembly... The problem was still present so next I checked my IPR valve and it looked horrid... I tried to rebuild it but it actually broke coming apart... The rod tgag the magnet goes on was actually bent.. so I just bought a new one from ford.... The problem was still present in its current state... I do think that this problem happened in a singular occurrence months prior to the idling issue.
i’m interested to see what your fuel pressure is underload when you get that replacement gauge. That could be a factor though you’ve done the hutch mod and you have a nice fuel system.
I already have the isspro gauge installed... The baseline fuel pressure is 65... Under full WOT it only drops to 62 at lowest... It has a pretty new bosch pump along with Aa relatively new FASS pump acting as a lift pump... I though at first maybe fuel pressure was the problem but pressure is rock solid...
Icp sensor from ford dealership and ipr valve from riffraff as ford OEM part
ok, understood. Alot of the basic checks are coming back solid. What state are you in, sir? I see a Florence in Oregon, in South Carolina, and well, Italy.
...Does it act the same with the ICP disconnected? It will use the default tables for ICP and ignore the supposed low pressure.
Have you checked the IPR wiring way back into the harness? Could have a short where it’s commanding % but it’s not getting to the solenoid.
Have you checked this yet? Now with pigtails replaced, recommend wiggling the wires and checking for continuity/short to ground/short to pwr with a multimeter between PCM connector and IPR connector. That commanded IPR% climbing while ICP stays low might indicate an intermittent open circuit to the IPR coil. It's still strange to me because ICP is not responding for several seconds. Intermittent opens would glitch more often I would think.
ok, understood. Alot of the basic checks are coming back solid. What state are you in, sir? I see a Florence in Oregon, in South Carolina, and well, Italy.
Have you checked this yet? Now with pigtails replaced, recommend wiggling the wires and checking for continuity/short to ground/short to pwr with a multimeter between PCM connector and IPR connector. That commanded IPR% climbing while ICP stays low might indicate an intermittent open circuit to the IPR coil. It's still strange to me because ICP is not responding for several seconds. Intermittent opens would glitch more often I would think.
I will do this next... Is it safe to run off the table with sensor unplugged at 70mph? Makes me nervous to do.
I added a couple of quarts of oil... I used to run 5 gallons of oil since I have an after market dual oil filter setup... The stick reads 2 quarts high but it's possible that the stick is not accurate since it's the original dipstick that has been through 2 engine outs... Maybe it got bent at some point... I also have another FPR valve... It's in a motorcraft bag but I think it may be a fake but maybe it will work differently lol... I'd just like to put another valve in there for ****s and giggles since Fords quality is so great these days
