IPR Questions
Thread Starter
|
Semper Fi
Joined: Feb 2011
Posts: 771
Likes: 1
IPR Questions
I have read than worn or sticking IPRs will cause poor idle and longer starts when hot. Mine seems to be leaking oil and I have rougher idle and longer start up when hot. I do not have access to a scanner.
I bought the o-ring kit from Bob to reseal the IPR. will a leaking internal o-ring cause those conditions? Or is it mechanical wear requiring total replacement.
Truck has 198k and dont mind putting a new part on but figured $11 o-ring kits is the first logical step.
Any advice is appreciated.
I bought the o-ring kit from Bob to reseal the IPR. will a leaking internal o-ring cause those conditions? Or is it mechanical wear requiring total replacement.
Truck has 198k and dont mind putting a new part on but figured $11 o-ring kits is the first logical step.
Any advice is appreciated.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
If it is leaking oil then it needs new o-rings and while you have it out make sure the the valve action is ok. You can do this without taking it apart. See the bottom of page 3 in the below attached PDF. If it seems to stick then you can try some solvent. If it still sticks you will have to take it apart.
Also check the ohms on the winding of the solenoid. It should be between 10 and 10.8 ohms and steady. If the reading fluctuates then the winding is going bad and can cause a rough idle. The solenoid is what opens and closes the valve and also holds it steady for a smooth idle. If the winding is inconsistent the valve will no be held steady nor open and close smoothly.
Also check the ohms on the winding of the solenoid. It should be between 10 and 10.8 ohms and steady. If the reading fluctuates then the winding is going bad and can cause a rough idle. The solenoid is what opens and closes the valve and also holds it steady for a smooth idle. If the winding is inconsistent the valve will no be held steady nor open and close smoothly.
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Ohm across the 2 pins on the solenoid.The PCM uses a 400 hertz signal to control the IPR. The IPR controls how much high pressure oil reaches the injectors which
is the ICP. The amount of ICP determines how much fuel is injected and that determines RPM.
Thread Starter
|
Semper Fi
Joined: Feb 2011
Posts: 771
Likes: 1
Trending Topics
Elder User
Joined: Feb 2006
Posts: 547
Likes: 0
From: Tennessee
If it is leaking oil then it needs new o-rings and while you have it out make sure the the valve action is ok. You can do this without taking it apart. See the bottom of page 3 in the below attached PDF. If it seems to stick then you can try some solvent. If it still sticks you will have to take it apart.
Also check the ohms on the winding of the solenoid. It should be between 10 and 10.8 ohms and steady. If the reading fluctuates then the winding is going bad and can cause a rough idle. The solenoid is what opens and closes the valve and also holds it steady for a smooth idle. If the winding is inconsistent the valve will no be held steady nor open and close smoothly.
Also check the ohms on the winding of the solenoid. It should be between 10 and 10.8 ohms and steady. If the reading fluctuates then the winding is going bad and can cause a rough idle. The solenoid is what opens and closes the valve and also holds it steady for a smooth idle. If the winding is inconsistent the valve will no be held steady nor open and close smoothly.
Is the initial fluctuation normal, or a cause for concern?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Post Fiend
Joined: May 2009
Posts: 5,470
Likes: 3
From: Pea Ridge, AR
You are fine, initial fluctuations can be caused from a lot of things. Initial "Charge" of the windings, or simply you had the meter in "auto" ranging or similar and it was settling in on the correct range.
Elder User
Joined: Feb 2006
Posts: 547
Likes: 0
From: Tennessee
One last question for me, and I'll post it on spongecop's thread as it may help him as well.
I got my IPR out and rebuilt, and re-installed. After I put it all back on the truck and tightened down the 3/4 tin retaining nut, I do notice that there is a very slight side-to-side movement on the solenoid- I don't remember if it was there or not beforehand, but I think I've tightened down the retaining nut as much as I care to without damaging it.
Is just a bit of movement normal on the solenoid? If not, the only other thing I can think of is maybe to take the nut back off, and reinstall it turned around so that the 'flat' side of the nut is making contact with the spacer as opposed to the 'indented' side of the nut-
Feedback always appreciated!
I got my IPR out and rebuilt, and re-installed. After I put it all back on the truck and tightened down the 3/4 tin retaining nut, I do notice that there is a very slight side-to-side movement on the solenoid- I don't remember if it was there or not beforehand, but I think I've tightened down the retaining nut as much as I care to without damaging it.
Is just a bit of movement normal on the solenoid? If not, the only other thing I can think of is maybe to take the nut back off, and reinstall it turned around so that the 'flat' side of the nut is making contact with the spacer as opposed to the 'indented' side of the nut-
Feedback always appreciated!
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
That type of twisting movement won't affect how the needle valve moves back and forth inside the IPR. The nut is to prevent the solenoid from sliding back and forth on the IPR barrel which would affect the needle.
Thread
Thread Starter
Forum
Replies
Last Post
kjs5055
Ford Inline Six, 200, 250, 4.9L / 300
4
May 8, 2017 01:37 PM
Fordenthusiasts
1999 - 2003 7.3L Power Stroke Diesel
8
May 10, 2016 10:28 PM
icrman
1987 - 1996 F150 & Larger F-Series Trucks
1
Jun 24, 2008 11:48 PM
