HPOP or IPR
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Posting Guru
Joined: Feb 2010
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From: Opelika, AL
HPOP or IPR
got a question for y'all
on a WOT run from 60-80mph, my HPOP will climb above 3000psi and then fall off to around 2400psi (kinda hard to watch for exact numbers at 80mph) at the same time my duty cycle will rise to around 75%.
Does this sound like the HPOP is getting weak or could it just be the IPR that needs to be rebuilt/replaced?
Also...the ICP sensor is fairly new maybe 10K miles on it. But there is a little oil in the connection. not like standing oil but just a light coat....the old sensor was the same way when i replaced it. is a little oil normal?
on a WOT run from 60-80mph, my HPOP will climb above 3000psi and then fall off to around 2400psi (kinda hard to watch for exact numbers at 80mph) at the same time my duty cycle will rise to around 75%.
Does this sound like the HPOP is getting weak or could it just be the IPR that needs to be rebuilt/replaced?
Also...the ICP sensor is fairly new maybe 10K miles on it. But there is a little oil in the connection. not like standing oil but just a light coat....the old sensor was the same way when i replaced it. is a little oil normal?
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
Remove the connector, and at idle, see if oil is leaking up through the sensor.
If oil is leaking past the o-ring and getting in the connector that is one thing (replace o-ring), but if it is leaking through the sensor then the sensor is not reading accurately and will eventually fail.
If oil is leaking past the o-ring and getting in the connector that is one thing (replace o-ring), but if it is leaking through the sensor then the sensor is not reading accurately and will eventually fail.
Butt-Head
Joined: Apr 2004
Posts: 9,448
Likes: 2,934
From: Reed Point, MT
got a question for y'all
on a WOT run from 60-80mph, my HPOP will climb above 3000psi and then fall off to around 2400psi (kinda hard to watch for exact numbers at 80mph) at the same time my duty cycle will rise to around 75%.
Does this sound like the HPOP is getting weak or could it just be the IPR that needs to be rebuilt/replaced?
on a WOT run from 60-80mph, my HPOP will climb above 3000psi and then fall off to around 2400psi (kinda hard to watch for exact numbers at 80mph) at the same time my duty cycle will rise to around 75%.
Does this sound like the HPOP is getting weak or could it just be the IPR that needs to be rebuilt/replaced?
Note to self.
Read the signature before you post, Cody
Pump time. If Stage 1's are using that much oil.....then you have a weak pump.
Posting Guru
Joined: Jan 2007
Posts: 2,364
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From: Gilbert Az.
Hey not to be a captain obvious but do yourself a favor and drop an LPOP in there at the same time as it would be a shame to not be able to feed that nice new pump!
Jim
...& fat Monty
Jim
...& fat Monty
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Posting Guru
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From: Gilbert Az.
Jim
...& fat Monty
Postmaster
Joined: Jul 2006
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From: Bend, OR
LPOP's are not something that have an expiration date on them, there is never any guarantee that a new LPOP will not fail or any number of issues will not happen...
Leave well enough alone, Do you also recommend replacing CPS's because your in there?
In over a million miles of driving these trucks, working on these trucks and lending a hand on these trucks (12 years) I have seen one LPOP issue.
Posting Guru
Joined: Jan 2007
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From: Gilbert Az.
Replacing a functioning LPOP when doing a HPOP is like changing the rear diff fluid because your doing an oil change... Just doesn't make sense.
LPOP's are not something that have an expiration date on them, there is never any guarantee that a new LPOP will not fail or any number of issues will not happen...
Leave well enough alone, Do you also recommend replacing CPS's because your in there?
In over a million miles of driving these trucks, working on these trucks and lending a hand on these trucks (12 years) I have seen one LPOP issue.
LPOP's are not something that have an expiration date on them, there is never any guarantee that a new LPOP will not fail or any number of issues will not happen...
Leave well enough alone, Do you also recommend replacing CPS's because your in there?
In over a million miles of driving these trucks, working on these trucks and lending a hand on these trucks (12 years) I have seen one LPOP issue.
Especially since the OP was referring to making big oil modifications to the top end witch is the only reason I suggested a new LPOP, had this been a stock truck thread it wouldn't have even crossed my mind, but he is talking VOLUME! Not stock!
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