This thread may be of some help to you if you are getting stuck navigating the endless maze of diagrams in the FSM.

https://www.ford-trucks.com/forums/1...-diagrams.html

 

Had To go to Work Wednesday, We had the first big Windstorm of 2021 Tuesday night and I woke up at midnight in pitch black darkness and howling Dogs. Utilities got slapped hard , and I'm gonna be a Rich Dead Man, ( from lack of sleep) with 28 Hrs of OT..... Oh well, my wife will enjoy it...I"m back on the Hunt Sunday.....




Yeah, I know my big fat Thumb......

 

I was one of those folks affected by the windstorm - power out 2 days, cable out 1. Generator got a workout. Thank you for your work on the utilities, Coax.

 

Thanks, after 31 years of this abuse, 272 days and I'm out, I'm getting too old for this young Mans game, Then I can sit on my porch and yell at the new guys to fix my Cable!

 

Very tough and dangerous job. Thank you for what you do on a daily basis.

Early congratulations on your retirement!

When I first joined the military, I was an outside plant technician. I used to climb telephone poles and all sorts of cool stuff, for a young man. Seems like a lifetime ago now...

 

Yeah, They took our hooks away around 2008, Like all Corporations, too much Liability, Gave us longer-Boom buckets. (I'm not complaining) Most of the Senior Guys all have blown Disc's so it's a natural Progression I guess....

 

I think you said the IVS was going on and off, but in the chart you provided the IVS was at idle. If PCM sees idle it will ignore all the other PIDs.

Otherwise if I followed along correctly it seems the PCM is getting good signals from the pedal assy. Then the PCM gives the info to AE so you can read the PIDs. So I think all of that is good.

Maybe the thing to look at is PCM output, like commanded pulse width and IPR duty cycle. If those PIDs change but the truck never goes off idle the problem is downstream of the PCM. If the PIDs do not change the problem is in the PCM.

 

Sorry, It's Hard to see, But look at the chart again..... The light Green line is the IVS signal, It stays off at idle, But it wakes up way too late after the pedals already halfway to the Floor and halfway thru the RPM rise. The Pedal itself was reporting to the PCM, and IVS did too, For some reason the timing was way off. And No response from the engine. Go Figure..

 

Looking at the PID screencap the IVS is red. Not so familiar with AE but I'm guessing red is bad. Applying that screencap Accel pedal position of 54% to the graph looks like approx 47 on the time axis. The IVS was at idle at that time, waking up to run position for a brief moment at 55 on the axis.

Do you have adjustable pedals?

Just feeling my way here, happy to be corrected.

 

Additional IVS reading.

 

Nah, It's the line graph that shows the timing, and the reason the Numeric graph goes red is when the MIL light activates showing the PCM has locked the Idle out. No correction, I didn't understand it either. I've had to reeducate myself with the small details of AE lately.. and Yes my brain is tired......

and yes I've got adjustable, Which means 200$ difference between Aftermarket and OEM. I've gone thru 2 new afterM units and My newest unit from RiffRaff showed up last Friday, I hope I will become the Poster boy for us using NOTHING but OEM on these trucks. All cause I tried to save some Bucks........I'll know tomorrow...

 

PCM does not "lock out" the idle state. PCM ignores the other PIDs when the IVS declares idle state.

Pretty sure your parts are good but if you want another adjustable pedal assy I have a NIB spare.

 

I wonder if there is a timeout between the IVS indicating the pedal is not at idle any more and the PCM seeing a change in APP Sensor values. If not, try dismounting the IVS and trigger it manually then press on the pedal to see if you are able to get the engine to get off idle.

 

Not to Nit Pik here, but from where I'm at, not much difference between "Ignoring" and "lock out"....but I get what you're saying. lol! and I've got 3 New NIB pedals here already, That's my Quandary.. I'm getting ready to install Clay's OEM unit today......I'll keep ya'll posted.

But Thank you for the Offer....

 

Well, I'm Gonna State, Right here, Right Now, that I'm NEVER EVER gonna put another Aftermarket Part in my Ride again..... Yup I said it.... I installed The OE replacement pedal from RiffRaff today, and sure enough, It Runs like a Top. No Coughs No Blimps No Issues. All this Heartburn for 200$ Savings? I have learned my lesson. I shopped for the most name brand aftermarket part I could Find, The most reliable vendor, Rock Auto, and everything was great. It was a Standard Motor Parts unit, appeared to be well made, No issues installing it, Dropped right in...... Lasted for about 2 hrs. total drive time and went completely stupid. Okay,I said, Bad Part, it happens these days... Notified the vendor, No Problem had another shipped out that Day. Dropped the replacement in....DOA . WTF? Well, Ya'll know the rest. So 30 days and $1,300 later, I'm ecstatic that she's running, and relieved I don't have to dig into the wiring, I'm gonna be Gun shy for awhile until I regain confidence that ANY part can be trusted for any length of time. I know nothing Lasts forever, but Damn.... I ran some Data Files on AE, and They are showing just what we think they should. I just think Paying $700.00 to replace a $1.00 microswitch is Fricking ridiculous....I need a drink....