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P38A Battery replacement and draining issues

Discussion in 'Range Rover' started by awkwardbob, Sep 15, 2020.

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  1. brianp38dse

    brianp38dse Well-Known Member

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    12.24v after charging is a duff battery.
     
  2. brianp38dse

    brianp38dse Well-Known Member

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    And do not forget to disconnect the battery before replacing the regulator, ask me how that goes:rolleyes:
     
  3. aj1954

    aj1954 Well-Known Member

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    I think I would remove the alternator and do it on the bench/kitchen table.
     
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  4. martyuk

    martyuk Well-Known Member

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    Thanks for the tags re the fob filters.

    I've PM'd you, Bob - but will post here aswell...

    Unfortunately we are out of stock of the RF Filters at the moment - we are waiting for a new batch of main circuit boards to be manufactured and shipped to us, but as yet I don't have even an estimate on when they might be here so we can build some more filters. We had 150 PCBs made in the first batch, and I sent out the last ones that I had made up here last week I think. Which on one hand is great that there is obviously a use for them, but the downside is that with all the madness in the world at the moment and things taking longer than normal, we are a little bit at a standstill until the boards arrive. We've also tweaked and updated the design aswell, so not just a case of hit 'reorder' on the version we had made last time - though even then I don't think the manufacturing/shipping times were likely to be much different!

    I will endeavor to update once I have a time-frame for them becoming available again to order..

    Kind Regards,
    Marty
     
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  5. awkwardbob

    awkwardbob Active Member

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    Thanks again folks, and thanks for the info Marty.

    If 13.8V isn’t good for a modern battery, are there any recommendations for a ‘better’ more appropriate alternator someone would care to recommend ?
    Or is it simply a matter of changing the regulator ? -if so, again, where might be a good place to investigate a replacement ?

    sorry if these seem daft questions, I really do appreciate the input !

    Bob
     
  6. jamesmartin

    jamesmartin Well-Known Member

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    thats ok,unless you use it daily you can expect battery issues
     
  7. awkwardbob

    awkwardbob Active Member

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    After a bit of digging, this: Vr-F153a from Mobiletron seems to do the business -if I can find a uk stockist !
     
  8. romanrob

    romanrob Well-Known Member

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    That part code was from one of my old posts Bob, you'll be fine, I sourced two off ebay.

    Re part numbers: if your alternator was original you'd most likely have this kind of plate (this is off a 4L GEMS). My RR alternator (4.6L GEMS) had it stamped into the lower bracket (not much chance of finding it without removing the alternator)- and I suspect had been re-manufactured, or belonged to a Disco at some point The A127 is the "chassis" ie an ex-Lucas mounting, even if you have an MM alternator. The Vr-F153a fit both of the GEMS vehicles I have, so as long as the alternator you have now is not some funky after-market one then you should be ok with that code. DSC_3439.JPG
    DSC_3433.JPG
    DSC_3407.JPG
     
    Last edited: Sep 17, 2020
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  9. Marshall8hp

    Marshall8hp Active Member

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