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Oil pressure gage low

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Old 07-12-2010, 12:33 PM   #1
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Default Oil pressure gage low

When sitting at a light in gear, my 98 TA a4 oil pressure gage drops very low. It hovers at or slightly below 20 psi. This only happens on very hot days after driving a while. Once the RPM's come up to 2000, the pressure will jump up to 30 and higher from there. When cold, it's at 40 psi. Here's a pic I snapped with the cell phone after 30 min of driving on an 85 degree day. Is this normal?
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Old 07-12-2010, 02:32 PM   #2
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I hope it is because my car does the same thing lol I believe it is normal
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Old 07-12-2010, 04:18 PM   #3
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it look normal, mine is lower then that at idle. when cold its around 37.
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Old 07-12-2010, 04:24 PM   #4
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Normal. Change to ls2 timing chain/ls6 pump if your paranoid. Mine has been doing this since I got it, still running fine.
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Old 07-12-2010, 04:32 PM   #5
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Cool thanks guys.
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Old 07-12-2010, 04:58 PM   #6
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mine never drops below 40, is over 60 when cold and pegs 80 on acceleration, i know there are huge variances in these gauges and how well they work from car to car but jeez...
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Old 07-12-2010, 05:07 PM   #7
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Quote:
Originally Posted by thatguy383 View Post
mine never drops below 40, is over 60 when cold and pegs 80 on acceleration, i know there are huge variances in these gauges and how well they work from car to car but jeez...
that sound does not right. 80 at woot or just normal driving ? man wat kind oil and filter u use ? 20w50 hehe ? mabe sensort is mess up or something
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Old 07-12-2010, 08:28 PM   #8
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mine was doing the same thing when i got it. the guy has 5w30 mobil1 oil in it....i put 10w40 reg vavolene oil in it and oil pressure bumped up about 15psi....then when i was doing my ls6 intake swap i snapd my oil pressure switch and put a new one in and when i started my car my oil pressure went up another 10. my car has high miles so i think the switch was all gummed up. the needle use to bounce around and now ima solid 40 at idle in gear
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Old 07-13-2010, 11:24 AM   #9
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Quote:
Originally Posted by killagt View Post
that sound does not right. 80 at woot or just normal driving ? man wat kind oil and filter u use ? 20w50 hehe ? mabe sensort is mess up or something
even when completely warmed up my camaro will hit near 80 psi (guage indicated) at near WOT
my silverado in sig is the exact same way except the silverado only goes to slightly over 60 on hard acceleration(not necessarily to WOT though) but does not drop below 40 , 0-40 syn. german castrol in both with ac delco filters
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1997, 1998, 1999, 99, camaro, car, gages, light, low, oil, operating, pressue, pressure, sitting, ss, trans, z28

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