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It will walk you through setting up FORScan on a laptop, or FORScan Lite on your phone, how to set up the PIDs to monitor, how to check for DTCs (codes), how to take a drive and log these PIDs, and how to view them afterwards. If you'd like, post your log file here and we will graph it for you. You are bound to have some codes stored that might point us in the right direction as well.
Originally Posted by RacinJasonWV
...I think the most helpful data from FORScan in these cases is when it’s charted. I haven’t used it myself...
Perfect! I will do that tomorrow assuming the cable arrives. Under what conditions would be best? Forgive me if this doesn't even apply. I have never used a program like this or logged anything. Log during start up, cold idle and drive, its death at op temp, and no start crank?
It seems like the batteries are acceptable now that they're charged and I am not abusing them by cranking constantly.
I mentioned that mainly as a reference point. The PCM has some requirements to see or it will never start. This is one of them. Yep, just something to keep in mind as you’re fighting through this.
Originally Posted by BioEng494
With ICP, obviously the data collection will help but could that be a temperature-dependent problem?
No idea. Just another one of those required to start things to keep in mind.
Originally Posted by BioEng494
Would it be worthy for me to still replace the fuel pump? When looking under the truck, it looks that perhaps it is still the original fuel pump (or a really dirty OEM replacement) and I read that it is a good idea to replace as regular maintenance about every 100k.
I think a better thing to do is monitor actual fuel pressure, especially when it dies. There’s a way to measure from the fuel bowl drain. Not the best method since it is pre-filter but considered “easy”. https://www.ford-trucks.com/forums/a...4&d=1592859516
I haven’t heard of issues with pumps based on 100k. I thought the diesel pumps lasted a long time.
Originally Posted by BWST
I'm hurt...
So you want me to have problems requiring the charting tool?!?
I know I know, it would be good to have a baseline. One thing that’s stopped me so far is I use the OBD port for the Edge monitor. One of these days I’ll get a splitter for it. At least I have the dongle and FORScan downloaded in case it’s needed. Never had the dongle connected to the truck yet though. Currently connected to my daily driver car.
You can check fuel pump function pretty easily. Add a section of 5/16” ID tubing (cheap vinyl tubing from hardware store is fine) to the water drain discharge line. Make hose long enough to reach a bucket, etc on the ground. Open valve and drain filter, then turn key on and observe flow and volume before pump times out. Flow should be steady and free of air and you should get about a quart of fuel from pump.
I would consider doing the in-tank and pre-pump mods no matter what the current problem is. Adding a serviceable pre-pump filter and getting rid of the failure prone pickup foot is worth the trouble.
...Log during start up, cold idle and drive, its death at op temp, and no start crank?
Yes sir. Start FORScan and get to the screen that lets you hit "play" per the directions in the link, and the program will start logging until you hit 'stop', at which point you can save the file and use excel to graph it, or post it and we'll get it done. If the issue occurs within an hour of driving, the file size should be small enough to post.
Originally Posted by RacinJasonWV
So you want me to have problems requiring the charting tool?!?
I know I know, it would be good to have a baseline. One thing that’s stopped me so far is I use the OBD port for the Edge monitor.
I like teasing you guys with the Edge Monitors (great instant data), but you know I like logged data to see and diagnose a challenging issue. I pester @ESwift for the same reason. If you two were my kids, I'd knock your heads together. I think I'm just jealous.
I'd address the oil and fuel leaks first. Mainly because it's simple mechanics and no tech needed. Plus they gotta be fixed anyway.
If the oil level falls too low the engine will not run. Nice design feature, fwiw.
If the injector O rings are bad the oil can pump into the fuel tank. This will inflate your MPGs and drain the oil level. And make the fuel in the bowl black. Did not hear this in your description, but FYI.
There is a clamp near the turbo pedestal that commonly wears thru the fuel line, resulting in a solid fuel leak. Take a peak there.
I just delete both of those fuel line clamps on every truck I work on.
You guys and your ugly edge monitors suction cupped to the windshield....
I have FSL on my Android head unit, but really only fire it up if I’m having a problem or I’m bored and want to see how things look for some reason. The same would apply to using a handheld android device. I don’t feel the need to monitor ‘all that’ all the time.
I just delete both of those fuel line clamps on every truck I work on.
Mine are deleted thanks to your advice.
Originally Posted by SkySkiJason
IYou guys and your ugly edge monitors suction cupped to the windshield....
Sounds like someone else is jealous too.
Originally Posted by SkySkiJason
II don’t feel the need to monitor ‘all that’ all the time.
Mine incorporates the EGT sensor and displays the TFT. That’s the main use. Oh and the cheap backup camera!
The other 3 PIDS are random based on my current mood. Typically EOT is one of them. It was purchased years back before dongles and FORScan was a thing, so gave me the ability to read codes etc.
I’m not into the giant head units. But if those were available years ago then I may have went that route. Who knows, I may let PMS take hold and want one later.
I'd address the oil and fuel leaks first. Mainly because it's simple mechanics and no tech needed. Plus they gotta be fixed anyway.
If the oil level falls too low the engine will not run. Nice design feature, fwiw.
If the injector O rings are bad the oil can pump into the fuel tank. This will inflate your MPGs and drain the oil level. And make the fuel in the bowl black. Did not hear this in your description, but FYI.
There is a clamp near the turbo pedestal that commonly wears thru the fuel line, resulting in a solid fuel leak. Take a peak there.
Very true about the leaks, they are definitely on the list... I think I discovered the low oil=no start unfortunately haha. Also, luckily, the fuel in the bowl was very clear but that is good to know. And I will check out that fuel line as well.
To everyone eagerly awaiting the results from today's demise... I tried importing them three times into the PID Charting Tool with no luck (Excel Online, Google Sheets, and actual Excel). For various reasons, they didn't work. Perhaps it is related to the fact that it is 81k rows. Is anyone able to help me interpret this tangled mess? Thank you!
Last edited by BioEng494; Apr 24, 2023 at 08:48 PM.
Just looking around line 61500 and seeing idle speed, correct injection pressure, and a 9% pressure regulator duty cycle tells me it's likely NOT a high pressure oil leak as suspected.
I know I know, it would be good to have a baseline. One thing that’s stopped me so far is I use the OBD port for the Edge monitor. One of these days I’ll get a splitter for it. At least I have the dongle and FORScan downloaded in case it’s needed. Never had the dongle connected to the truck yet though. Currently connected to my daily driver car. 
I think I'm just jealous.
