2001 Powerstroke oil pressure Zero @ Idle - Ford Powerstroke Diesel Forum
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Old 08-13-2007, 12:55 PM
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2001 Powerstroke oil pressure Zero @ Idle

I have a 2001 f350 oil level is 1 qt over full on fresh oil change oil pressure on manual guage checked on HPOP resivoir in place of the oil pressure switch shows zero at idle and around 20psi @ WOT I just changed the g-roter pump and seal that sit behind the harmonic balancer what else could I possibly spend my money on I have no more hair to pull out!
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Old 08-13-2007, 01:08 PM
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Quote:
Originally Posted by odsather View Post
I have a 2001 f350 oil level is 1 qt over full on fresh oil change oil pressure on manual guage checked on HPOP resivoir in place of the oil pressure switch shows zero at idle and around 20psi @ WOT I just changed the g-roter pump and seal that sit behind the harmonic balancer what else could I possibly spend my money on I have no more hair to pull out!
main bearings are the most common cause of real low oil pressure if the pump and regulator are good........im surprised it even fires if its showing 0 at idle.....are you sure the gauge is correct??
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Old 08-13-2007, 02:18 PM
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oil pressure is zero on an installed manual guage

since post we removed the hpop resivoir to check regulator and interior hp regulator I m Still at a loss
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Old 08-13-2007, 06:19 PM
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Of course if it still runs at idle w/ 0psi wait a minute or to & it will definatly dye starving the hpop. This procedure you might not want to tackle. The check valve in the rear oil cooler adaptor could have a small piece of debris causing it to stay partially open. I had a 7.3 one time i was repairing that had blew a small plug out of the rear portion of the cam area. But that procedure means the tranny will have to come out. That will be your last resort unless you find something else wrong. The older models had the valve barbed into the housing but the newer ones like yours was changed to a snap ring style. The barbed type would come loose causing the valve to go sideways & stick open causing no psi what so ever.
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Old 08-13-2007, 06:51 PM
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Has ne 1 offered the idea of the base for the oil filter it might be bypassing allhte time..Just a suggestion.....seams 2 me like the oil is in free flow "so2speek",somethiing is keeping the system from building pressure B4 the HPOP I dont believe it is hte HPOP not the LPOP something is just letting the oil bypass.. that is Y i guessed the filter housing or base which ever you chose to call the mouting for it...... Bill
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