Low Oil Pressure at idle ( Searched )
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Low Oil Pressure at idle ( Searched )
So my situtation is this: At idle my oil pressure reads about 15-18 psi. I'm idleing around 750 like normal, but my oil pressure is low. Oil pressure will rise to 60 as I get higher in the rpm's, like normal. So far I've replaced the Rear Main Seal ( did it when tranny was down for clutch ), Oil Sending Unit, and now the two O-rings under the oil filter pedistal ( all three things were leaking prior ), and yet my oil pressure is still low at idle. Seems like the oil pressure is fine until something opens up ( Theromostat? ). For example, tonight on my way from home, the car was still warming up on my drive home when I hit a red light. While at the light I was idleing at 1k ( Oil Pressure was at 30 psi ), then it sounded like the Theromstat had opened ( seemed more like a choke for a carb, as I don't recall a Thermo affecting idle ) and I was idleing at around 700-750 and my oil pressure dropped to 15-18 psi. Any ideas what's causing this? best I can tell I have no more oil leaks. I am useing the stock gauge to judge all this, but I never had a problem with my oil pressure until I replaced my Rear Main Seal. I doubt my stock gauge went faulty the same time I replaced that seal. On a side note also, my temp gauge ( stock ) seems to read alittle over normal temps sometimes, i.e. 3/4 or 5/8 of the gauge. Not sure if the two could be interelated or not, but temp problem was happening before the oil pressure.
P.S. will be replaceing stock oil pressure gauge this weekend now that I got my Fc3s.org pedistial on tonight.
P.S.2 And yes, the oil is full
P.S. will be replaceing stock oil pressure gauge this weekend now that I got my Fc3s.org pedistial on tonight.
P.S.2 And yes, the oil is full
Last edited by 83/86Rx7; 05-06-04 at 08:35 PM.
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You might want to replace the oil pump itself. When my motor was being built, the builder (Bruce Turrentine) replaced the pump....I think he does this for all motors he builds as a precautionary measure. Also, when you put the new gauge in, its a good idea to have a seperate (new( sender. You can get an adaptor plate from Racing Beat that'll make the install of a pressure sender (and temp sender) super easy. If I remember right, the parts only ~$50. Good luck.
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Oil thermo pellet is prolly shot, resulting in low oil pressure... here's a link from Reted's web site.. it should explain everything..
http://fc3spro.com/TECH/HOWTO/OTB/otb.html
http://fc3spro.com/TECH/HOWTO/OTB/otb.html
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Hrmm, it say's on Reted's how-to, that the stock oil pressure should be between 10-20 psi at idle, but my owner's manual, and if i remember right some posts, said stock oil pressure should be 30 psi at idle. Who's right?
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looking for a few more insights to low oil pressure and which stock pressure is correct!
Some info on the car also:
'86 Sport
78k miles
No air pump/ac-cv
rest of my mods seem irrelavent like my exhaust, new drive shaft w/ replaceable U-joints, clutch etc.
Some info on the car also:
'86 Sport
78k miles
No air pump/ac-cv
rest of my mods seem irrelavent like my exhaust, new drive shaft w/ replaceable U-joints, clutch etc.
Last edited by 83/86Rx7; 05-07-04 at 09:19 PM.
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Originally posted by 83/86Rx7
looking for a few more insights to low oil pressure and which stock pressure is correct!
Some info on the car also:
'86 Sport
78k miles
No air pump/ac-cv
rest of my mods seem irrelavent like my exhaust, new drive shaft w/ replaceable U-joints, clutch etc.
looking for a few more insights to low oil pressure and which stock pressure is correct!
Some info on the car also:
'86 Sport
78k miles
No air pump/ac-cv
rest of my mods seem irrelavent like my exhaust, new drive shaft w/ replaceable U-joints, clutch etc.
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