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Engine Tech Technical discussion related to all relevant engines such as KA, SR, RB, CA, 2JZ , L24/26/28, VG, VQ, and LSx series.


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Old 08-11-2018, 08:18 PM   #1
kyral
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0 oil pressure at idle

So my oil pressure at idle drops to 0 once the engines warmed up.
im thinking its the sending unit for my gauge though cause the engine seems very happy and I beat the shit out of it. I cant hear any knocking or any noises youd hear with no oil pressure. you can let it idle for an hour no problems

just wondering if anyone else has experience a sending unit failure like that before and if they are common
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Old 08-13-2018, 09:04 AM   #2
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Its cheap insurance to replace it. I wouldn't risk it.
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Old 08-13-2018, 10:19 AM   #3
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I had the same thing happen on another car. Once warmed up if I came to a stop the pressure would drop to 0, replaced the oil pressure switch/sending unit and the problem went away.
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Old 08-14-2018, 09:15 AM   #4
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+1 on bad sending unit...I looked at my cams to see oil flowing...it was frustrating as mine also had a beep when it fell below 1 PSI...
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Old 08-21-2018, 07:20 PM   #5
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sounds like sending unit failure for oil pressure gauges is fairly common.

I also noticed the gauge needle seemed to kind of stick a little shortly before it failed

like I said I didn't hear anything out of the ordinary so I can say with confidence its an oil sending unit failure
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