In park or neutral I can't bump the RPM of my truck up and hold it at a steady high idle. It either wants to start climbing towards the top end or does nothing at all. Is this type of thing common? Is there a fix or am I stuck with it?
Thanks in advance.

Check your LP and OPS. SInce you are using greasecar kit, also check the way the fuel run to the IP.

I hate to see it but I see a moderator spanking/redirect coming.

Have you checked for dtc's? Your trucks computer may have them even though the ses light isn't on. Does it surge while on diesel or WVO or both? In the past when my truck has surged it has been the beginning of a pmd issue. Did you mount a new pmd in your bumper or remove the old one from the pump and put it in your bumper? If it is the latter it may be time for a new one.

How do you haul your family around? I thought the max seats in a burb was 9. Mine has 8. I have 5 kids and everyone here in CA thinks my family is huge. It's almost time to get a 15 passenger van.:D I know the fords have diesels.

Do you have a high idle switch, or are you trying to do it with your foot? I've only been able to hold RPM's steady with my foot once, and that was while paying close attention to sound and oil PSI. And only put your foot down until it starts revving, and hold your foot. How far will it go before it quits increasing RPM?

Finally, check all above mentioned things, such as LP, OPS, and codes.

It's normal,,, if you want a higher Idle.. Search for High Idle Mod.

I read somewhere that that is one of the symptoms of an IP going out.
That said, I bought mine with 140,000 miles on it, it did the same thing
from day one, and now has 210,000 on it - I think it's normal, I'm not
changing Injection Pump for that :)

I once heard that one check for IP would be to hold 2000 RPM with your foot........Again just something I heard.

Louis

Get a scanner on it. Mine surged like this and the metering valve was cracked. That means a new IP. Check the obvious things, though, before going to the trouble of pulling the pump.

Mine does he same thing. Had a P0251 code once upon startup(it stumbled) then found out my lift pump was bad. Still does the rev thing if I barely touch the peddle and hold it. IDK, I guess I'll find out when something breaks.

I hate to see it but I see a moderator spanking/redirect coming.

Sigh. Search. FAQs.

look here (http://www.dieselplace.com/forum/showpost.php?p=800863&postcount=1)

or here (http://www.dieselplace.com/forum/showpost.php?p=2126661&postcount=7)

Sorry. I tried the search function and didn't know what to type in to the search parameters to find these. Thank you for directing me.

Look up Broken Armature Shaft. See if it helps.

The way i take what he is saying to mean is that he just wants to hold it at a couple hundred RPM faster than idle (for whatever reason). You really cant do that with your foot. The throttle pedal is way too sensitive. To get it to idle a little faster youd need the fast idle switches but if i remember correctly those only work with the truck in park and your foot off the brake.

The way i take what he is saying to mean is that he just wants to hold it at a couple hundred RPM faster than idle (for whatever reason). You really cant do that with your foot. The throttle pedal is way too sensitive. To get it to idle a little faster youd need the fast idle switches but if i remember correctly those only work with the truck in park and your foot off the brake.

That's my take also, it is nearly impossible to adjust the idle a few hundred RPM higher than normal with the foot on the pedal.

I try the odd time so see if I can idle at a steady 1000, just for fun, and if you try long and hard enough, and the moon is just right, with my head tilted just so, maybe I can, for a short while, but it's a challenge.

So unless you are experiencing any problems other than what is virtually impossible anyhow, don't jump out and replace any good parts, just drive.

Ah... I read that 'starts climbing toward the top end' as self-directed...

If it's just touchy throttle, Holyoak, then these guys are absolutely correct, as usual.

These drive-by-wire pedals are a little touchy. As is the case with most stuff, if it ain't broke, don't fix it.

:)

Jim

Yes, exactly, that's what I was asking about. The throttle is so sensitive I can't bump the idle up a little and get it to level off.
Ex. Say at a long stop light on a hot day to help the a/c push a little more cool air. This is one of the reasons I might try this.
Again, thanks folks. Looks like I'm not going to be under the hoos this weekend...

Thats what i was thinking was that you were trying to rev the engine so the AC would work a little better. Its the only thing that made any sense to me. High idle switches wont help you there unless you put it in park and turn them on tho. You'll just have to live with its sensitivity. Its been a while since i tried but if i remember right it was easier to hold it at 1500 or so than it was to try and hold it at 900 or 1000. It might take 1500 to get the AC to work good on a hot day sitting still anyways, since you wont have the trucks forward movement pushing air thru the condenser, it will all be up to the fan to pull the air thru.