Oil pump Diags?
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Cargo Master
Joined: Oct 2005
Posts: 2,599
Likes: 2
From: Farmington NM
Oil pump Diags?
So if you pull the oil filter cap and crank, will it spray oil , or overflow?
When I crank for 15 seconds, all it does is fill the bowl , will not overflow.
Is there a way to tell if it is the pump, regulator? or something else?
When I crank for 15 seconds, all it does is fill the bowl , will not overflow.
Is there a way to tell if it is the pump, regulator? or something else?
Thread Starter
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Cargo Master
Joined: Oct 2005
Posts: 2,599
Likes: 2
From: Farmington NM
Thanks God mark is online!!!!!!!!!!!!!
Ok If i remove the oil filter and oil filter cap. Then crank the engine for 15 seconds, What should happen?? Should it slowly fill, in 15 seconds it was just to the lip of the oil bown, Or should it fill rapidly, spray out, ot something like that??
I am trying to diag the oil pump without a pressue guage.
Ok If i remove the oil filter and oil filter cap. Then crank the engine for 15 seconds, What should happen?? Should it slowly fill, in 15 seconds it was just to the lip of the oil bown, Or should it fill rapidly, spray out, ot something like that??
I am trying to diag the oil pump without a pressue guage.
Thread Starter
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Cargo Master
Joined: Oct 2005
Posts: 2,599
Likes: 2
From: Farmington NM
Full story, I was crusing at 75 13 miles into texas heading east. I Noticed that she was loosing power, over the next few minutes i had to keep it floored to have any power, she then died. As she was dieing I pulled codes and saw Low injector Pressure, I looked at ICP pid and it was around 550-600, with commanded pressure at 20K
Now when I crank the ICP is never over 150 to 175.
I was trying to go through the list of what could cause low ICP.
Low oil, Nope, at the full mark.
Bad oil pump? While cranking for 15 secounds the dash guage does not move. With cap off it does not fill. I do not have a oil pressure guage with me.
Fleet Owner
Joined: Nov 2003
Posts: 27,901
Likes: 3,617
Thanks God mark is online!!!!!!!!!!!!!
Ok If i remove the oil filter and oil filter cap. Then crank the engine for 15 seconds, What should happen?? Should it slowly fill, in 15 seconds it was just to the lip of the oil bown, Or should it fill rapidly, spray out, ot something like that??
I am trying to diag the oil pump without a pressue guage.
Ok If i remove the oil filter and oil filter cap. Then crank the engine for 15 seconds, What should happen?? Should it slowly fill, in 15 seconds it was just to the lip of the oil bown, Or should it fill rapidly, spray out, ot something like that??
I am trying to diag the oil pump without a pressue guage.
Fleet Owner
Joined: Nov 2003
Posts: 27,901
Likes: 3,617
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Cargo Master
Joined: Oct 2005
Posts: 2,599
Likes: 2
From: Farmington NM
ok, thanks, If the pump was bad, should I see allot of flow, or do I need to look down stream?
Can you give me some idea what to look for.
I am on my way to Asheville NC. My grand ma went into hospis, and only has a few more days.
Can you give me some idea what to look for.
I am on my way to Asheville NC. My grand ma went into hospis, and only has a few more days.
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Thread Starter
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Cargo Master
Joined: Oct 2005
Posts: 2,599
Likes: 2
From: Farmington NM
i guess I am not. on the last car i had that i thought had a bad pump. If you loosned the oil filter and cranked it, oil would shoot everywhere.
Fleet Owner
Joined: Nov 2003
Posts: 27,901
Likes: 3,617
I just read your post #5.
Don't think you can blame the oil pump w/ what you have seen so far. A high pressure oil pump leak can cause low base oil pressure while cranking. I was always skeptical of this, but was recently "schooled" on how it can happen (thanks to jboczar and several others).
Just for grins, did you pull the connector off of the ICP sensor and give it a try? Might be worth it, but it sure is fitting the scenario that was described to me w/ the HPOP leak.
Don't think you can blame the oil pump w/ what you have seen so far. A high pressure oil pump leak can cause low base oil pressure while cranking. I was always skeptical of this, but was recently "schooled" on how it can happen (thanks to jboczar and several others).
Just for grins, did you pull the connector off of the ICP sensor and give it a try? Might be worth it, but it sure is fitting the scenario that was described to me w/ the HPOP leak.
Fleet Owner
Joined: Nov 2003
Posts: 27,901
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The IPR does not usually fail. there is a general type test for it, I will try to track it down.
BTW - I would just try removing the harness from the ICP, not removing the ICP (at least not yet). If you start w/ the harness removed, you should go ahead and replace it.
I hope I am wrong about the HPO / HPOP leak and I wish you good luck in your repair and trip. I will stay tuned in case I can help any. Also, it was fantastic of Blaine to track down some weekend help for you. This is a really good bunch of guys on the Forum!!
BTW - I would just try removing the harness from the ICP, not removing the ICP (at least not yet). If you start w/ the harness removed, you should go ahead and replace it.
I hope I am wrong about the HPO / HPOP leak and I wish you good luck in your repair and trip. I will stay tuned in case I can help any. Also, it was fantastic of Blaine to track down some weekend help for you. This is a really good bunch of guys on the Forum!!
Fleet Owner
Joined: Nov 2003
Posts: 27,901
Likes: 3,617
The IPR (injection control pressure regulator) is duty cycled by the PCM. You can use an ohmeter to test continuity through the IPR itself (should be between 3 and 15 ohms). Also, The IPR valve is basically a solenoid and that if 12 volts is applied it would close the valve. There are better tests w/ the right equipment. Don't know of anything else right now.
Senior User
Joined: May 2009
Posts: 311
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From: Clearwater
If you hold down the drain back valve in the oil filter housing and crank it, as long as the housing is filling up your base oil system is ok. Since you have a 2003 model year, it is very unlikely to be a leak. Unplug the icp sensor, if its still a no start then pull the ipr valve and check the screen for debris or deformation, if thats ok then you need a high pressure oil pump.