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512TR: started car out of storage, tachometer bouncing

Discussion in 'Technical Q&A' started by MannyGMT2, Mar 21, 2011.

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  1. MannyGMT2

    MannyGMT2 Formula Junior

    Feb 27, 2006
    429
    Montreal, Canada
    #1 MannyGMT2, Mar 21, 2011
    Last edited: Mar 21, 2011
    Hey everyone,
    I decided to start up my car this weekend (its been stored for about 4 months in my garage) and the RPM gauge went nuts. The tachometer needle was bouncing on its own. The engine was running fine, but at idle, the tach meter was dancing on its own. As I gave some throttle, the RPM gauge was still behaving erratically.

    I am wondering what caused this. also I might want to add, that 4 months ago, i accidently spilled over some engine oil while adding some oil to the oil reservoir. Could some of that oil which spilt over the engine messed up my electrical wiring?

    any thoughts?

    thanks
     
  2. FerrariDublin

    FerrariDublin F1 Rookie

    Jun 14, 2009
    3,454
    Dublin, Ireland
    Full Name:
    Greg
    #2 FerrariDublin, Mar 21, 2011
    I'm thinking maybe casued by a low battery?
     
  3. MannyGMT2

    MannyGMT2 Formula Junior

    Feb 27, 2006
    429
    Montreal, Canada
    #3 MannyGMT2, Mar 22, 2011
    low battery, hmm.. that could be possible. The battery was dead, and I had only boosted it to start it. I will put a charger on it and see how it runs with a recharged battery. Thanks
     
  4. lightning

    lightning Formula Junior

    Apr 19, 2010
    551
    Stockport
    Full Name:
    Martin Oliver
    #4 lightning, Mar 23, 2011
    My RPM gauge bounces around when I first start the engine (on my Mondial t) if I've not used the car for a while. It always goes OK after a mile or two of driving.
     
  5. Frari

    Frari Formula 3

    Nov 5, 2003
    1,194
    brisbane australia
    Full Name:
    tony
    #5 Frari, Mar 24, 2011
    Flat battery should be ok once driven for an hour.
     
  6. FerrariDublin

    FerrariDublin F1 Rookie

    Jun 14, 2009
    3,454
    Dublin, Ireland
    Full Name:
    Greg
    #6 FerrariDublin, Mar 24, 2011
    ...... If it's still capable of taking a charge! Not if too far gone!
     
  7. Frari

    Frari Formula 3

    Nov 5, 2003
    1,194
    brisbane australia
    Full Name:
    tony
    #7 Frari, Mar 24, 2011
    A lot of batteries these days just seem to die. In the good old days you had some warning eg slow starter motor or lights that would go dim at slow revs etc. The last few batteries I have had have all just died, no warning 2.5 years gone.
     
  8. ~Joshua

    ~Joshua Karting

    Jan 1, 2010
    110
    Full Name:
    Check my profile
    #8 ~Joshua, Mar 27, 2011
    The guages are electronic and low voltage can cause other weird issues around the car.

    Something similar happened (tach was dead with the other guages working) when I took my Zo6 for a drive after 2 years sitting and just a minimal recharge before putting the battery back in. Worked perfectly after the 1st drive.
     
  9. Frari

    Frari Formula 3

    Nov 5, 2003
    1,194
    brisbane australia
    Full Name:
    tony
    #9 Frari, Mar 28, 2011
    Sooo what was the outcome Manny?
     
  10. MannyGMT2

    MannyGMT2 Formula Junior

    Feb 27, 2006
    429
    Montreal, Canada
    #10 MannyGMT2, Jun 12, 2011
    oh it turns out it was the battery. I put the battery on a charger and the next day it was fine.

    thanks everyone
     

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