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Rpms dip/oil light comes on at idle

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Old May 10, 2016 | 11:04 PM
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Rpms dip/oil light comes on at idle

I've done a little research on this, mostly see people say it could be bad oil pressure? Tbh I know a bit about cars but I'm no mechanic. Its come on once or twice at high speeds too when I'm really getting into the throttle. Basically I'll be driving, come to a stop and it will idle, rpms dip and oil light comes on, then rpms come back up (on its own) and oil light goes back off. Recently its been doing it at basically every other stop. Any information is GREATLY appreciated!
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Old May 11, 2016 | 12:06 AM
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The low pressure light? You shouldn't be driving your car, if you're lucky you haven't already done a bunch of damage to your engine. What year, mileage and other info? Oil levels good? You're gonna need to give a bunch more info about your car if you want help with it.
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Old May 11, 2016 | 07:57 AM
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second what epiphany stated.. do u have any visible leaks or smoke
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Old May 11, 2016 | 08:54 AM
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Sound like the dreaded rear gaskets, I installed a oil pressure gauge on my car to watch for it,
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Old May 11, 2016 | 09:13 AM
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Check for leaks around the pump...and then move on to the gasket as mentioned
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Old May 11, 2016 | 09:39 AM
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Originally Posted by Epiphany
The low pressure light? You shouldn't be driving your car, if you're lucky you haven't already done a bunch of damage to your engine. What year, mileage and other info? Oil levels good? You're gonna need to give a bunch more info about your car if you want help with it.
Its an 08 g37s coupe. Yeah I quit driving it, been driving my girlfriends car. I checked the oil it was fine. Idk how to check what the other guys were saying, like I said I'm not a mechanic. It has 104k miles. And I think its low pressure light I guess, its the red oil light. Should I just take it to a mechanic then? Ive seen no smoke, no weird noises, nothing unusual at all except the rpms dipping and oil light.
Edit: no visible leaks either that I've seen . Ive always used full synethic oil, change it ever 4k miles.
Edit 2: I checked oil again, I guess it is between full and low on the dip stick. Also haven't been driving it much, drove it a couple times with the light coming on and haven't drive it since. Definitely have me worried I ****ed up the engine now. Lol

Last edited by nitsua26; May 11, 2016 at 10:10 AM.
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Old May 11, 2016 | 10:49 AM
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Get those gaskets changed out. Mine was doing the same thing just no oil light until it was too late (blown engine). I got a CEL for cam over timed and random misfire. My oil level was perfect when it happened.

New revised gaskets and fasteners are $75 from EPS Tuning. The money and time if you can't do it yourself is removing the front cover.
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Old May 11, 2016 | 10:52 AM
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Pic of gasket on my new motor which only had 20k miles on it. The gasket was failing on it.
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Old May 11, 2016 | 10:57 AM
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New next to old gasket
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Old May 11, 2016 | 11:03 AM
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New gaskets and fastners installed in new motor.
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Old May 11, 2016 | 11:38 AM
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Yes, get your oil pressure checked.

Dsskyline, I'm intrigued that you used hex screws instead of the standard phillips from your pic for your gasket cover. Did you use any oil resistant lock tightener with these if you felt it necessary and how tight do they need to be or torque spec you came up with? Curious, thank you.

Edit: Nevermind I missed that you received your parts from EPS Tuning.

Last edited by WTN; May 11, 2016 at 03:29 PM.
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Old May 18, 2016 | 11:39 AM
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I'm guessing I have a issue since my gauge now reads 9-10 PSI at idle in traffic. :/
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Old May 19, 2016 | 09:03 AM
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Originally Posted by ANMVQ
I'm guessing I have a issue since my gauge now reads 9-10 PSI at idle in traffic. :/
I changed oil and it quit doing it as much. Its hard to know what the issue is as it rarely does it now at idle in traffic and it only will come on for 1 second when the rpms dip and then go back off.
Has anyone ever changed their oil pump? Seems pretty straight forward but people always make it seem easier than it is
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Old May 19, 2016 | 10:10 AM
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The oil pump is not the issue.

You need to take it to a shop or dealer and get them to measure the oil pressure with the engine fully warmed up Is should be 14 psi or more. The low oil pressure light turns on at about 3 psi.

It could be a simple as a failing $20 oil pressure switch or it could be a internal leak known to our engine. (Oil gallery gasket on the rear timing chain cover.)
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