I've been taking of the advice of this forum and monitoring my new to me 06' F-350 with a scangauge II. It's been interesting to see the gauge results the one gauge I'm not sure about is my IRP duty cycle %.

I had to run to the other side of my metro area the other evening so I had a good hour and half of mostly interstate driving unloaded with no trailer. With the engine at operating temp (190-195°F) these were my ranges:

Idle 22-26%

Driving at 65mph: 34-42%

Heavy acceleration: 55-67%

Reading some older posts on the forum I found that my idle % looks normal. Are my cruising speed and acceleration % values normal???

Not sure if it makes a difference but truck is all stock and has 101K for mileage.

 

Andy they look similar to mine.

 

Okay that's good to know-Thanks.

One more to check off the list as good.

 

You really just don't want to see it trying to operate totally open or closed due to the ICP sensor data. You would never want to see the IPR % as low as 15% or as high as 85% closed. Anything in between is normal.

 

Per the PC-ED reference values tables, Hot Idle should be 22%, 30mph should be 29.3%, and 55mph should be 36.33%.

It also ways "reference values may vary as much as 20%", and are RPM and tire dependent, so it's not really a good answer for anything else other than diagnostic "what's way out of line here".

I look for consistency. My IPR% at hot idle has been 23% since I've been watching it, never less than 22 and never over 24. So I'm not worried until that changes.

 

With the truck fully warmed up in drive and AC on, i see .24-.25 on mine. If I put it in park and turn off AC, .21. In park with AC on, i see .22-.23.

As long as you don't see more than .25 when warmed up, in park, with accessories off, you're fine.

 

I'll keep an eye on how consistent my numbers stay.

I was planning to do the STC fitting upgrade this weekend so I wanted to know if my IPR was off I'd take a look at it while it was out anyways. I still plan to get the screen & o-ring kit for it while I'm at Autonation getting my STC kit.

 

and do the dummy plugs and stand pipes while your there.

 

I did the dummy plugs & standpipes a few weeks back. Just like I guessed nobody had replaced them prior. The original dummy plugs o-rings were deformed funny, but not as bad as some pictures I've seen online of them.

So far the only upgrade I've found on this truck is when I had the FICM off it had a re-manufactured International sticker on the bottom dated: November 2013.

 

Before you buy the IPR screen kit check the STC kit first it might be in the bag. The STC kit I bought from FICMrepair had it in the bag so now I have an extra IPR kit I don't need.

 

Thanks for the tip...you were spot on! I picked up my STC kit today and that same IPR screen kit was bagged separately but included inside the STC kit. Granted it's only $8.59 but that still saving money on a kit I wouldn't of used.