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OIL PRESSURE GAUGE READS HIGH AT ALL TIMES

Oil Pressure gauge reads at the top of the H (High) at all times, from the time of start up to shut down. Oil level is fine and everything else seems to be opertain fine. Can it be the gauge itself?

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  • Anonymous Mar 17, 2014

    idle seems high as well as if left idle in gear engine begins to stall

  • Anonymous Mar 21, 2014

    Original 6 volt oil pressure gauge, 12 volt system. Gauge is not registering a reading,

  • Anonymous Mar 21, 2014

    Oil gauge reads high

  • Anonymous Mar 30, 2014

    new sending unit oil pressure gauge goes down when ideling 4.3

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Has 358000 miles, just had leaks repaired. Twice since my oil pressure gauge reads no pressure but not all the time? Why


1. Oil Pressure Gauge Not Working You will notice this happens when your oil pressure gauge is not reading, whether the engine is turned off, idle or running. Try to step on the gas to rev up the engine. If the oil pressure gauge still doesn't change its reading, your gauge is busted. It's best to replace it as soon as possible because you won't have any idea if your car is already overheating or not.
2. Oil Pressure Gauge Reading Too Low When your engine is idle, the oil pressure gauge will have a low reading. When the engine starts running or when you're already cruising or on the freeway, your gauge's reading should have increased. If it stays on a low reading, then you now your oil pressure gauge is broken.
3. Oil Pressure Gauge Reading Too High Another common oil pressure gauge problem is when your oil pressure gauge is reading too high when your engine is idle or when it's turned off. Rep

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Have a gauge hooked up to low pressure fuel pump and it shows it works but high presssure one doesnt


Check to see you have oil up to full on dipstick . The high pressure pump picks up oil at the top level so if oil starts to get to low engine will stop before engine damage . The high pressure pump is what makes the injectors fire . Also check the wires that go thru valve cover some times they burn up and you can smell the burn thru the oil filler cap .

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It doesn't make any sense that you HP pump died while you were replacing the air compressor. Also, I don't think the crank circuit has to see oil pressure in order for the starter to turn...where would the pressure come from if not the pump rotating , how were you going to test for pressure if the starter isn't supposed to crank with a gauge installed? Does the A/C gear drive the oil pump?

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Oil pressure gauge


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Oil pressure gauge reads high only when engine is running,oil level is fine


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My 2005 Nissan Armada is reading oil pressure abnormally high. The gauge is maxed out.


  • Well it could be a bad oil pump or a bad Oil Sending Unit. If you have an oil pressure gauge you can pull the sending unit and stick the pressure gauge in there and see what the reading is. I would thing 60PSI would be suitable.
  • I believe this Oil Sending Unit is on the front (possibly the back) of the oil pan.
  • Just remove the connector and put a wrench (or a deep socket) and twist it out and replace with a new one.
  • Make sure the oil filter is snug and not leaking as well.
  • Check your oil level too and make sure it is properly filled.
  • Good luck and thank you for using FixYa.

Regards, Tony

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It plunges down to zero at times then reads eratic


Your oil becomes too fluid as the engine gets warmer. When the engine rotates slower at stops, the oil pump won't make pressure. At speeds, more oil is pumped and the pressure rises.
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Oil pressure gauge reads past 80


now unless there is a very loud knocking of the motor which would mean that the engine's top end was not getting any oil I would say that your oil guage is sprung and needs replacing. a high pressure rating would indicate a restriction in the oil flow pasdt the sending unit or a plugged oil filter. if the filter were plugged you would know it because your enging would run tight in no time at all. replace the guage itself... please rate this........thanks

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