Does this look like a normal oil pressure? | FerrariChat

Does this look like a normal oil pressure?

Discussion in '360/430' started by up4speed, Oct 16, 2012.

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  1. up4speed

    up4speed F1 Rookie
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    #1 up4speed, Oct 16, 2012
    Last edited by a moderator: Sep 7, 2017
    I took this photo while idling in traffic after the car was fully warmed up and driven at least 20 miles.
    When I am actually driving, the pressure reads around the 70psi mark. It goes from a little more to a little less depending on the RPM.
    I know there is a ton of info on this because of the flaky sending units, but it seems that there is no straight answer so far. Some give readings that must be estimations based on the limited markings on the gauge, others give the european measurement of bars. I decided to just include a photo so hopefully I can get an answer that all agree on.
    What do you guys think? (sorry for the shadows of the photo. It's readable if you look close)
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  2. e3enigma

    e3enigma Karting

    Jul 30, 2011
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    Thousand Oaks
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    Mike
    Looks right to me based on my 360 reading, but other experts I am sure will comment more so I am interested to see what they have to say:)
     
  3. Spider360Matt

    Spider360Matt Formula Junior

    Mar 14, 2012
    595
    California
    mine would read about that low but even dip lower with a quick blip of the throttle - i think that they just clog over time and dont read the full voltage range. The trouble comes when the readings get even more unpredictable and the engine receives a low oil pressure message - the slow down light will come on (steady) and then the engine will lose all power.

    I have the sensor being replaced this week...it was most certainly the problem.

    *if* you decide to replace it yourself, consider the job to be a total pain...the part isnt easy to get to and you essentially need a special wrench (someone recommended a crow wrench - brilliant idea). And, there are two leads off the sensor - while this part only appears to be for Ferrari, the leads each provide different readings. One has the matching output for the gauge cluster and the other has a much higher voltage output. It effectively turns your gauge into an idiot light - either pinning it to full or reading zero with the occasional movement on stop and go moves.
     
  4. up4speed

    up4speed F1 Rookie
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    Thanks for the info guys, I'm satisfied that it's normal.
    Spider360matt, thanks for the info about the terminals, that makes sense why there is 2, and they only use 1 terminal. I guess the sensor is for many different vehicles and some use a dummy light.
    One more question: How low does the gauge actually have to go, in order to trigger the warning light and cause the engine to go into limp mode? I'm guessing, it pretty much has to go all the way down to maybe 0-5 PSI. Is that correct, or close to correct?
    Thanks guys...
     
  5. dreichman

    dreichman Formula Junior

    Sep 9, 2011
    425
    Denver, CO
    I've had my 360 for over a year, your oil pressure gauge is reading perfectly normal.
     
  6. up4speed

    up4speed F1 Rookie
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    Awesome, thanks!
     
  7. ar4me

    ar4me F1 Rookie
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    Does low oil pressure really result in a slow-down light and reduce engine power? I find that hard to believe, but who knows. If you truly have low oil pressure, the only way to save the engine is to shut it down. I doubt limping home on low oil pressure would be a good thing to do. Do any of the Ferrari techs on here know?
    Jes
     
  8. Michael B

    Michael B F1 Rookie
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    No.

    Yes.
     
  9. Spider360Matt

    Spider360Matt Formula Junior

    Mar 14, 2012
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    Hi Michael - thanks for jumping in.

    I had read in other posts that this does happen and I had experienced it personally - Id be surprised if its just coincidence. Ive actually (and unfortunately) experienced both versions of the 'slow down light'. First, the flashing version after a car wash. I am assuming that the water somehow got to the thermocouple readers and triggered readings...I went through the procedure of re-doing the grounds and general cleaning of the inputs and it has since vanished. The second, the solid version, was when I started to experience lower than normal pressure readings from the oil sensor. After replacing it (only 2 days now) the readings are generally higher and the light doesnt come on. no other symptoms in the readings (no high readings of oil or water temp etc).

    What does turn the solid 'slow down' light on?
     
  10. rbellezza

    rbellezza F1 Rookie

    Jun 18, 2008
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    Normal to me
     
  11. Michael B

    Michael B F1 Rookie
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    You did the right thing. I have replaced the pressure sensor with good results (like yours) every time. It seems to be a point of contention. Nearly deeming it as a maintenance item!

    The slow down lights are generally concerning the catalytic converters and related thermocouples. Once a high enough temperature is noted by the control unit (enough to possibly damage the substrate) the warning will illuminate. If & when the temperature drops below high tolerance then the light will extinguish.

    This can happen in a number of differing conditions, from fuel related to spark related. Which can be caused by anything from injector failure, 02 sensor malfunction, MAF inconsistency, or even modifications to the converter type (read: Aftermarket equipment).

    Nevertheless we have seen Ferrari V8's that have failed from low oil pressure. And in those cases, no reduced power or additional warning lights (past the low pressure dot) were noted.

    I could see adopting a low pressure feature that could cut the engine (I have seen aftermarket features like this), but I know of no automobile manufacture that is doing so after start-up.
     
  12. Zecafureca

    Zecafureca Rookie

    Jun 17, 2012
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    That's normal, and I think it is described in Owner's Manual. Once you start moving, the gauge goes up. If you move and the gauge still that low, that means low oil level. Nothing major.
     
  13. Supreme360Swag

    Supreme360Swag Formula Junior

    Dec 26, 2011
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    My pressure is the same as yours. I was a little worried too
     
  14. up4speed

    up4speed F1 Rookie
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    Thanks again for all the replies. Sice it looked low at idle, I was a little concerned, but I kind of knew it was either normal, or the sending unit was off. It always shows adequate pressure once the RPM's are up. I checked the connection on the sensor today, it was tight by hand, I didn't put a tool on it. The wire connector felt solid on there, so I'm pretty sure that it's all normal. I wonder if the other cars that show higher readings than what is shown in the photo are using a heavier weight oil than the 5w-40?
     
  15. tonino ct

    tonino ct Karting

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    #15 tonino ct, Aug 29, 2024
    Last edited: Aug 29, 2024
    Hi guys. Sorry to jump in. I am having same problem with my 2004 360 I am jumping in to different tread try to figure out exactly what’s going on with my oil pressure. After replacing the engine oil I noticed the low pressure was low, at first I thought it was my imagination because when I’m driving the car, the pressure goes up to 70. When on idle The red warning light comes out, I decided to replace the unit and it did the same. so I decided to purchased a oil pressure gauge. I ran a car for more than an hour and looks like on idle only stops a 13, I am not sure if that’s a good reading, or it needs to be higher? Car runs good like a man only has 20 K miles. Anybody please feel free to give me some advice thank you.
    My english is nor perfect but the car needs to be
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  16. Kevin Rev'n

    Kevin Rev'n Two Time F1 World Champ
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    What does the dipstick look like when engine is warm?
     
  17. tonino ct

    tonino ct Karting

    Mar 1, 2018
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    tony
    I add 1 quart of oil, i drove the car for 20 minutes pretty hard, i got home and checked the oil and the pressure on idle. this is the final result.
    the oil was 1 inch below the max
    (Unfortunately i didn't take a foto)
    And the pressure stayed at 15.
    hope this help.
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  18. tonino ct

    tonino ct Karting

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    Correct. When The slowdown light comes out the engine goes in slow mode, thats Becouse. The catalytic converter sensor fails or gets to hot, i did replace the bad one and fixed the problem. There is no SLOW DOWN for the warning light for the oil pressure. Best advice shut engine off asap.
     

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