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Faulty Oil Pressure Sensor Again on Norge 8V?

Discussion in 'BNS12 Chat & Tech' started by CMD, Jul 13, 2020.

  1. karlsguzzi

    karlsguzzi Just got it firing!

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    just been serviced
     
  2. Brian UK

    Brian UK GT Reference

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    Or the pressure is actually less than it should be. Love to know what the oil pressure is with a hot engine at tickover.

    But maybe, having been in Bill's position regarding broken oil pumps, I am being too sensitive.

    But if the oil light flickers at tickover when hot, that does suggest marginal oil pressure. The sensor should switch at around 8 psi.
     
  3. john zibell

    john zibell Moderator Staff Member GT di Razza Pura

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    But do they?
     
  4. Fiat500

    Fiat500 Cruisin' Guzzisti

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    I for one would be checking out the sump gaskets, more importantly the upper gasket. Pain in the butt I know but at least a blown gasket could be ruled out if not the problem.
     
    Bill Hagan and john zibell like this.
  5. CMD

    CMD Just got it firing!

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    just posted this on a separate thread but it may well be more relevant this this thread. Anyway, the motor oil has been changed early in the season and the bike has been OEM dealer serviced every year. Dealer has confirmed that the new oil pressure switch is ok.

    Oil pressure on idle when warm is approx. 15psi which when I rev up goes up to 60psi. As a result the dreaded red oil warning light comes on when the bike goes back to idle. This goes away when I speed up or when I ride but this comes back on as soon as I stop at a red light. Been told that pressures are within spec when rev'd up or during a ride but not at idle. Dealer does not necessary believe it is the oil pump since pressure goes up to within spec when riding. Been told it could be the caskets at/behind the oil pump (best case), the oil pump or even the caskets deeper within the engine (worst case) as this requires an engine re-build. Costs estimated anywhere between C$1,000 to $2,000 for a 6 year old N8VGT with only 39,600 kms (25k miles)

    Thoughts from the specialists would be welcome - thanks
     
    karlsguzzi likes this.
  6. vagrant

    vagrant High Miler GT Contributor

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    I just looked at this thread. I assume u have installed a real oil pressure gauge if u know it runs 15-60 psi? If so I'd be ignoring anything else. Although a Pita I'D change out the two pan gaskets just for grins. If frugal like me u could reuse the new oil.
     
  7. NPS

    NPS Cruisin' Guzzisti GT Contributor

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    On my Breva 1100, I replaced my oil pressure switch early this year as I had the light come on and dask error 07. I think it is 7 but oil sensor error. Anyway, after several months, last week I got a new dash error for the oil sensor. Only happened at tick over. I reset the errors and happend again. It is a spade connector not a bullet as in the old days (my T3). I will take the tank off and give it a good clean and protect the connector.
     
  8. CMD

    CMD Just got it firing!

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    Dealer used real oil pressure gauge so I believe that the psi values quoted are correct. Oil is clear and about 7months old. Love to be frugal too but no sure I would take on gasket/oil pump exchange and put it together ok again.
    From what I have read on various posts gasket failure seem to be the most likely cause - too bad its labour intensive (ie. $$$$)
     
  9. 2veloce

    2veloce Tuned and Synch'ed

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    Bill,
    Sometime back I picked up a pristine 2007 Norge with a build date of March 2007 and VIN ending in 113059. Currently has <10K miles. On a ride this past weekend I was at a stop and noticed the red triangle on the dash suddenly lit up. I pulled away and the triangle light disappeared but I decided to slowly ride home....about 40 miles. The triangle did not return even when stopped again at home. No noise or diminished performance of the motor. When I got home I noticed the 'wrench' service symbol. was illuminated. It may have been on earlier but if so I probably didn't see it due to dim backlighting of the dash display and bright sunlight. Error codes showed DSB 08 which is supposed to be 'oil pressure fault'. Oil level was correct. There was also a DSB 05 fault code (fuel sensor). I don't know what issues will throw that code but the fuel gage, fuel delivery and performance are spot on.

    Based on your comments about no pump failures AFTER March '07 and my build date OF March '07, would you personally be suspect of my oil pump? Or, would you suggest checking/replacing the sending unit and see what happens?

    Is there any way to know if the pump is shot without tearing into the motor?

    Any suggestions from anyone will be appreciated,
     
    Bill Hagan likes this.
  10. V700Steve

    V700Steve High Miler GT di Razza Pura

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    Posted on the oil pump thread. Swap out pres sender w/new one and see if issue continues. If so pull front cover off & look. Rule out a bad sender first, reset errors then see if you get a new one. You shouldn't need to go far but fully warmed up.
     
  11. 2veloce

    2veloce Tuned and Synch'ed

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    Thanks for input...sorry about not posting on oil pump thread. Will revert and post there for continuity.
     

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