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Oil Pressure light flickering at low revs

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    #1

    Oil Pressure light flickering at low revs

    After driving my car for 10 minutes, I was sitting at a stop light, at idle, and the oil pressure light started flickering. I quickly pulled into a gas station, checked the oil level (it was just under the lower dot), added a quart of 5w-40, and it went away. Later that night it flickered again after 30 minutes of driving. It only flickered once, though. Any ideas of what it could be? Thanks!
    Tags: None
    #2
    It is either low oil pressure (how many miles on your engine?) or a faulty oil pressure switch/connection. To know for sure, you'll have to measure the oil pressure. The pressure port/switch is on the back of the block above the oil filter.
    90 LX 4dr 5 spd 396,014 (sold 1/1/2022) - MRT: http://www.cb7tuner.com/vbb/showthread.php?t=201450
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      #3
      exactly what fleetwood said.

      in addition- when was the oil changed last? oil breaks down as the car is driven. i always say change oil every 3k, its cheap enough to do.

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        #4
        I agree with fleetwood but want to also add in the plug that connects to the switch could've gone bad, had it happen to mine.


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          #5
          Originally posted by 4cam4banger View Post
          exactly what fleetwood said.

          in addition- when was the oil changed last? oil breaks down as the car is driven. i always say change oil every 3k, its cheap enough to do.
          Changing oil at 3k is absolutely unnecessary. That is literally a sales pitch created by Jiffy Lube to sell oil changes. Back in 1990, Honda specified the oil change interval for these cars to be 7500 miles. Today, oils are even better, especially synthetic and synthetic blends.

          The condition of the oil should have absolutely no effect on the oil pressure.

          As Fleetwood said, it's either the pump or the switch/sensor. First, check the sensor. It's located near your oil filter. Check the wiring first. If it's damaged, repair or replace it. Next, replace the sensor. Removing it and cleaning it might help, but it's an inexpensive part. Just buy a new one, preferably from Honda. Check your oil pressure. If the pressure actually IS low, it's likely your pump. Replace it ASAP, and don't drive the car until you do.

          I suspect the switch more than the pump, as it seems to be sporadic. I don't imagine a failing oil pump would account for a flickering light. If your pressure is low, the light stays on.






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            #6
            I think it's the oil pressure sensor. seems to be a common problem now days with honda's
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