Odd idiling

[DieselFreak92]

Recently my truck has been idling weird. When I first start it everyday I let it warm up a bit then go on my way but until I drive it for a good bit there is an odd idle. Usually it idles at just over 500 rpms but it will fluctuate sporadically and the needle will jump maybe 50-75 rpms. But after I drive for a bit it seems to go away. This also doesnt happen on every cold start, only sometimes. There is no loss in power and after I drive it for a bit the idle is fine. What could it be?

 

[Powerstroke Cowboy]

When was the last time you changed you oil???? Or checked the level of your oil???

Could be your IPR to..

 

[DieselFreak92]

Oil was changed about 2000 miles ago. Haven't checked the level lately but will do so in the morning.

 

[DcMoore]

Check your oil level and I would say clean your IPR.... So, what Cowboy said.

 

[DieselFreak92]

How do I do this? Is there a write up somewhere? I googled it and found some stuff but its all very technical and I couldnt understand it.

 

[Tom S]

http://powerstrokearmy.com/forums/showthread.php?t=1776

There are instructions in there on how to clean your IPR courtesy of the library at PowerStrokeArmy.com


Dieselsite also sells rebuilt IPR's I do believe.

 

[DieselFreak92]

Thank you sir. Is there any benefit to a rebuilt IPR other then the fact that it is clean?

 

[Powerstroke Cowboy]

Thank you sir. Is there any benefit to a rebuilt IPR other then the fact that it is clean?

If your IPR is good just dirty, then yes that would be the only benefit of a new one...

 

[Tom S]

Clean is big time an issue on IPR's Look at the tiny parts.

I have seen some even better ones but that was what I could find quick.

 

[Talyn]

What color is your CPS?

Grey CPS can cause this idle issue.
I have it myself.

 

[Whytry]

Dang that needle is tiny

 

[strokefreak]

changed my cps last night from grey to black. major change. and they are cheap.

 

[Talyn]

not to many places to get a black CPS now. =)

Yeah, the smallest part of the truck is in that IPR and it will keep the whole truck from doing anything.

 

[ActionRick]

Clean the FPR screen . it sounds like there is air in the system . The return screen is how the air is removed .

Its rare that cleaning the IPR will help . There is a very fine filter that protects it ( edge) .. Most times they are worn & need replacement ...

Also , try unplugging the ICP sensor , see if the idle evens out...

 

[strokefreak]

did you get it figured out dieselfreak?

 

[DcMoore]

Clean the FPR screen . it sounds like there is air in the system . The return screen is how the air is removed .

Its rare that cleaning the IPR will help . There is a very fine filter that protects it ( edge) .. Most times they are worn & need replacement ...

Also , try unplugging the ICP sensor , see if the idle evens out...

That is wrong.

 

[DieselFreak92]

To be honest it just kinda stopped happening about a week after I posted. Cleaned the IPR anyway and hasn't given me trouble since

 

[strokefreak]

okie dokie.

 

[DieselFreak92]

Problem has come back. Not sure why I put that I cleaned the IPR, because I didn't. Where is the FPR screen located?

 

[SDS97_7.3]

If your talking about the screen on the fuel bowl. Its on the driver side, I believe somthing like 2 10mm bolts.