justchaos
Aurora Newbie
97 aurora,blk/blk,no mods yet,154,000miles and still strong
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Post by justchaos on Jan 14, 2005 18:38:48 GMT -6
what should your oil pressure psi read? thanks jim
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Post by rocketman on Jan 14, 2005 18:57:15 GMT -6
My '01 and '03 read about 30 at idle and as high as 74 according to the DIC. The '01 is a V-8 as well. Don't know how the first gen should read. I run 5-30 Mobil 1 in both. It may vary with conventional oil, especially when cold.
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Post by Marc on Jan 14, 2005 20:03:00 GMT -6
My 2001 4.0: Cold Start.......68 - 70 lbs. Idle, warmed up.....13 - 15 lbs. Highway, 65 MPH......60 lbs. 5W-30 Quaker State & the PF-61 oil filter. ___________________ GM!!! BRING BACK OLDS!!!
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Post by kobalt on Jan 14, 2005 20:46:41 GMT -6
Marc is right on the ball. My SLS does not have an oil pressure readout in the DIC
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Post by Isnibs on Jan 15, 2005 13:08:13 GMT -6
Marc is right on the ball. My SLS does not have an oil pressure readout in the DIC Does it have an 'engine temp' ?
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Post by Aurora40 on Jan 15, 2005 13:29:36 GMT -6
Marc is right on the ball. My SLS does not have an oil pressure readout in the DIC I believe you can enable some more readouts on the DIC via some kind of hack or something. Check out cadillacforums.com if you are interested...
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Post by alijonny on Jan 15, 2005 17:36:43 GMT -6
i get up to 60-70psi at start up and as low as 8psi when idling in gear fully wamed up. about 40-60on the highway depending on speed/temp. 8 seems a bit low, but i assume these motors are built decently tight. ive heard 10psi for every 1000rpms. oh well, it hasnt gone to 0 yet btw, i am running 10w30 pennzoil
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Post by kobalt on Jan 16, 2005 0:06:41 GMT -6
Isnibs, as far as the analog guage, yes; DIC engine temp, no.
That's great news Aurora40, you can bet I'll be looking into enabling more DIC functions!
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Post by Isnibs on Jan 16, 2005 13:13:43 GMT -6
kobalt, I had one on my 1988 89 Touring Sedan DIC and miss it on my Aurora.
justchaos, I get up to 50-60 psi at start up and as low as 7-8 psi when idling fully warmed up in gear and 40-50 cruising. Just hitting 200,000 kms
Aurora40, Does that work for the Aurora? I doubt it but it would be nice.
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Post by Rocketv8 on Jan 22, 2005 13:15:18 GMT -6
about 63-65 psi on startup and 15-19 psi fully warmed at idle....oldsmobile engines were always notorious for lower oil pressures than say, chevys
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Post by Superdemon on Jan 23, 2005 1:22:26 GMT -6
I have seen my oil pressure as high as 120 PSI one day on a cold start. That seems a little high to me but as the engine warmed up it went down. So either that is a error of some kind or I have a really tight engine.
Mike
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Post by 1997aurora97 on Jul 7, 2005 21:34:55 GMT -6
I have a 97 and it will go as low as 7psi when at full operating temp. A while back it was falling below this and turning on the low oil pressure light it turned out that the pressure sensor was getting weak a trip to the dealer and a quick replacement of the defective sensor and I was on my way. The dealer says this is typical for this to happen and 9 time out of ten it is just a pressure sensor gone bad. but running at 65mph it was up around 30 to 40 psi
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Post by Custom88 on Jul 7, 2005 23:32:42 GMT -6
2001 V6 Aurora Cold start up: 94 PSI Cold engine Rev to 2,400 RPM 116 PSI warm engine, 55 MPH 62 PSI Warm engine, idle in gear 17 PSI Full throttle warm engine 75 PSI
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Post by oldsauroraman1 on Jul 8, 2005 8:01:49 GMT -6
GM states in the 1998 Shop Manual (4.0) that minimum pressure is 5 psi. After replacing my oil pressure switch my readings are higher. Others have mentioned this as well. So, must be that age lowers the oil pressure readings from the pressure switch. At 60 degrees, 82 psi. Cruising up the road at 55 and running temp, 46 psi Idle, fully warmed, 18 psi I am using Mobil 1, 10w30 Before replacing the pressure switch: Cold, 20 degrees, 72 psi Cruising and warmed up, 38 psi Idle and warmed up, 14 psi As you can see, the pressure switch does make a difference on these readings. In previous GM vehicles I have seen the same thing happen after changing the pressure switch. Remember also, the Northstar engine was designed from start to finish. Flow of the oil is very important, more so than pressure. This is part of the engineering that went into the cooling system - Run 50 miles with no coolant - mode. So, low pressure at idle is AOK, so long as you do not go under 5 psi! Then, the alarm will sound!
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Post by menshadow on Jul 31, 2005 1:36:51 GMT -6
Well, heck. Before joining, I went out and ordered a new oil pressure sending switch because I'm concerned about my oil pressure being too high! Cold start: 120 Warm idel: 25 60 mph warm: 50
So I don't know whether I should change the sending switch or not....
Open to suggestion!
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BNICOV
Aurora Lover
Posts: 782
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Post by BNICOV on Aug 11, 2005 13:30:52 GMT -6
Why bother, it seems it is working fine. I would worry more if you had very low pressure. Also, the grade of motor oil would make a difference. Make sure you are using the appropriate grade (It is 5W30 I believe) of QUALITY motor oil (don't use the 99 cent Wally Mart stuff).
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Post by TheLoveThatNeverDies on Aug 12, 2005 2:39:00 GMT -6
Along the lines of what oldsauroraman1 said - According to Alldata, the classics should have a pressure of 5 @ idle and 35 @ 2000 rpm.
-Shawn
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Post by oldsauroraman1 on Aug 12, 2005 8:55:40 GMT -6
Wow. 5w is a wee bit low for protecting a Northstar. 10w min. Some guys are running straight 30 in the summers.
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