1st Gen R53 Cooper S Replaced oil pan gasket; now no oil pressure, low rpm and rough idle

Discussion in '1st Generation: 2002–06 R50, R53 & 2004–08 R52' started by Canusrufis, Jan 26, 2014.

  1. Canusrufis

    Canusrufis RMW Powered R53
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    You guys are going to think I'm nuts after posting this... Oh well here we go.

    I picked up a '05 R53 with 80k miles. Good running car but petty drastic oil pan leak. I R&R the oil pan gasket and while there changed crank sensor gasket and a leaking thermostat gasket. It was a chore! Ugh. New oil, 5w30 royal purple. Refreshed coolant.

    I went to start the car and not good! It starts but really rough, no pedal, no oil pressure, and low, almost stalling engine! Even with pedal on the floor. WTH??

    Plan to recheck my connections again but looking for guidance or similar experiences.

    On my mind at the moment :idea:, maybe in order of hope :fingerscrossed:
    1. It's cold, battery (and car) need to run for a few...
    2. It's not leaking oil, so oil gasket replacement ok. I've read others resetting CEL which I didn't do. Does that matter?
    3. Air and fuel mix. I did clean air filter maybe it's restrictive with PJ1. I've used this before on foam air filters. I'll pull that off and see if that helps. Additionally recheck the fuel bits that needed to be disconnected to remove serpentine belt. Maybe another vacuum hose some where?
    4. I screwed up the crankshaft sensor when R&R? That would suck! But ok.

    Agains thanks for any guidance. I post updates later.
     
  2. Metalman

    Metalman Well-Known Member
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    My best long distance internet guess.....

    Too much oil on the air filter can also coat the MAF sensor fouling the unit and confusing the ecu.....
     
  3. Canusrufis

    Canusrufis RMW Powered R53
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    Metalman your brilliant! Grey plastic pipe wasn't seated all the way on the MAP sensor and after reseating bam. Still not reading any oil pressure - when I rest on accelerator the light will go off around 3k rpm... then back on if I let off. maybe the filter housing isn't on right??
     
  4. ScottinBend

    ScottinBend Space Cowboy
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    No MAF sensor on the Gen1 cars.....:D

    Any chance the oil pump was dislodged/damaged?
     
  5. Canusrufis

    Canusrufis RMW Powered R53
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    #5 Canusrufis, Jan 26, 2014
    Last edited: Jan 26, 2014
    Unfortunately I found the problem to my engine oil light :mad2:
    http://new.minimania.com/images/articles/filter_base.jpg

    Drain back plunger came out with the filter while trouble shooting.

    Bentley doesn't even show this in their book (at least I can't find it) so looking for DIY guide if its out there. May create one if not
     
  6. Crashton

    Crashton Club Coordinator

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    As far as I know that part is not serviceable. I think you are going to end up replacing the whole thing. Don't run your car with the oil light on. You are shortening the engines life by doing so.

    Get your parts here > eMINIparts.com good folks & a forum sponsor.
     
  7. Tummi_Gummi

    Tummi_Gummi New Member

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    That part can also be found at pelican parts
     
  8. Canusrufis

    Canusrufis RMW Powered R53
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    thanks. Its going to be a chore... tried getting in there to assess the effort. stupid tight and messy... so far.
     
  9. Canusrufis

    Canusrufis RMW Powered R53
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  10. Way Motor Works

    Way Motor Works New Member

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    If you changed the filter I would really check the valve in the bottom of the oil filter housing as it could be broken, and more likely to break if you are using an aftermarket filter. If you need a new one we sell them, but also have a couple used ones if you want to save a buck.
     
  11. Canusrufis

    Canusrufis RMW Powered R53
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    Way you might have just made my week. I just ordered a new gasket and oil radiator seals from you in anticipation of pulling that housing out. If your saying you have a few of those black drain plungers available I'll take one!
     
  12. khammo01

    khammo01 New Member

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    #12 khammo01, Oct 8, 2015
    Last edited: Oct 18, 2015
    I am working on a 2003 R53 that was driven for about 15-20 minutes with the low pressure light on, due to that plastic valve being broken. The car was not low on oil. There are now microscopic metal shavings in the oil.

    Obviously engine life has been shortened but by how much? Anyone have experience with this?
     

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