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+--- Thread: Idle oil pressure (/showthread.php?tid=1818)
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Idle oil pressure - Mrkentee - 06-08-2017
My idle (700 rpm) oil pressure is now consistently below 20 psi at 210°. As soon as rpm's come up, oil pressure comes up. No complaints, otherwise. Pump is shimmed.
I replaced the sending unit and it made no difference. There's only one sending unit that I'm aware of. Insite shows 1-2 lbs higher (fluctuates) than gauge. Oil pressure sensor voltage is 2.0 volts.
It's original with 760,000 miles on it.
Should I be thinking about replacing the oil pump?
RE: Idle oil pressure - redbeard - 06-08-2017
What engine do you have?
RE: Idle oil pressure - Mrkentee - 06-08-2017
(06-08-2017 )redbeard Wrote: What engine do you have?
CM 871
RE: Idle oil pressure - Hammerhead - 06-08-2017
You are in the same range as I am, same oil temp, same pressure, I think it's fine.
Just don't make prolonged dead idle a habit. I always bump to 900rpm if I have to idle. Dead idle (6-700rpm) is one of the hardest things there is on an engine.
RE: Idle oil pressure - Mrkentee - 06-08-2017
(06-08-2017 )Hammerhead Wrote: You are in the same range as I am, same oil temp, same pressure, I think it's fine.
Just don't make prolonged dead idle a habit. I always bump to 900rpm if I have to idle. Dead idle (6-700rpm) is one of the hardest things there is on an engine.
But when you're in traffic, there's nothing you can do.
RE: Idle oil pressure - Unilevers - 06-08-2017
set the idle up in insite, 700-800 is still easily doable and is much better than 600.
RE: Idle oil pressure - Hammerhead - 06-08-2017
(06-08-2017 )Mrkentee Wrote: But when you're in traffic, there's nothing you can do.
Agreed, but the duration of this is not really long enough to be a major concern.
Like Unilevers says you can bump it up some in Insite. Mine is set so that when the Cruise Control On/Off switch is set to Off I can use the Set/Resume switch to adjust dead idle settings, check to see if yours will do this as well.
RE: Idle oil pressure - Mrkentee - 06-09-2017
(06-08-2017 )Unilevers Wrote: set the idle up in insite, 700-800 is still easily doable and is much better than 600.
It's at 700 now. At 800 I would think it would lurch fwd when you let the clutch out. And you'd slip the clutch so much.
RE: Idle oil pressure - Mrkentee - 06-09-2017
(06-08-2017 )Hammerhead Wrote:(06-08-2017 )Mrkentee Wrote: But when you're in traffic, there's nothing you can do.
Agreed, but the duration of this is not really long enough to be a major concern.
Like Unilevers says you can bump it up some in Insite. Mine is set so that when the Cruise Control On/Off switch is set to Off I can use the Set/Resume switch to adjust dead idle settings, check to see if yours will do this as well.
Mine is set up that way, also. When I stop, I always kick it up to 800 or 900.
It hasn't been this low before. This just started recently. I'm just wondering if I shouldn't be planning on replacing the oil pump, if that would make a difference.