205 electrical mystery (help!)
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Thread: 205 electrical mystery (help!)

  1. #1
    Fellow Frogger! lozenge's Avatar
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    Default 205 electrical mystery (help!)

    my trusty 205 Si is suddenly doing something very strange.
    starts up, drives normally, but the battery light is glowing
    AND nothing but the mechanicals will work, that is the lights
    won't come on, the indicators aren't interested and the windows
    won't go up or down.
    however, restarting the car, first turn of key, everything is as normal,
    lights work, fuel gauge needle comes up, windows and indicators work.
    then start engine and everything else goes quiet.
    what the hell is going on? any advice much appreciated, regards, Lo.

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  2. #2
    Fellow Frogger! Wintermute's Avatar
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    Have you got a multimeter? battery light would normally indicate a problem with the alternator, check the voltage with and without the car running. Should be a bit over 12V with the car not running, and closer to 14V with the car running.

    things not working when the engine is running tends to lead me to think that the alternator is not working and that the ignition is drawing enough current to drop the battery voltage to a level where the other electrics won't work properly, sounds a bit far fetched though, as if the battery was that low I would think you would have trouble turning it over.

    Tony.
    306 S16 1995 black
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  3. #3
    1000+ Posts schlitzaugen's Avatar
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    There were comments some time ago that a lot of stuff isn't fused which ends up munching the contacts in the ignition switch. Sure yours is fine?

    Did you measure anything (like alternator running does it give good voltage)?

    The GTI basically has one wire that supplies positive 12V to the ignition switch and that branches out to all circuits via the ignition switch.

    What happens if you want to use something that is supposed to work without the engine running or the key in the ignition (such as lights, brake lights, etc)?

    And before you go any further, check your ground strap to the body, because it may be the one to the g'box/block is good (engine starts), but the other one is bad. Starting the engine possibly just jiggles the body strap a bit and makes it work until next time.
    ACHTUNG ALLES LOOKENPEEPERS

    Das computermachine is nicht fur gefingerpoken und mittengrabben. Ist easy schnappen der springenwerk, blowenfusen und poppencorken mit spitssparken. Ist nicht fur gewerken bei das dummkopfen. Das rubbernecken sightseeren keepen hands in das pockets-relaxen und watch das blinkenlights.

  4. #4
    1000+ Posts BIGRR's Avatar
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    crook battery terminal connection?
    Present fleet:-
    Peugeot 93' 205 Gti 16v
    Peugeot 73' 504 Ti from new
    Peugeot 08' 407 Hdi Coupe from new

    Previous fleet:-
    Peugeot 95' 605 Sv
    Peugeot 92' 205 Gti
    Renault 72' 16TS from new
    Renault 69' 10
    Renault 71' 10s
    Renault 68' 10 from new

    "Be reasonable do it my way!"


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    Fellow Frogger! lozenge's Avatar
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    much thanks Tony, Schlitz and BigRR - I'll have a look in the morning
    and follow up on your thoughts. regards, Lo.

  6. #6
    Fellow Frogger! lozenge's Avatar
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    well, did the easiest thing first, tightened up battery terminals... voila!!
    everything now as it should be, so relief for a mechanically-challenged klutz.
    big kiss to BigRR and thanks again to Tony and Schlitz, regards, Lo.

  7. #7
    Fellow Frogger! Wintermute's Avatar
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    Gotta love it when it is something simple!!

    Tony.
    lozenge likes this.
    306 S16 1995 black
    Morris 1100 1965 green

  8. #8
    1000+ Posts schlitzaugen's Avatar
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    Almost always it is.

    I always cover the negative in some sort of dielectric grease to prevent corrosion and so on exactly to avoid such crap (bad connections to the battery) and try to use decent battery terminals which I can get tight enough to pinch the battery post (some have a few internal ridges that bite in the post). My mistake for assuming everybody else did.
    lozenge likes this.
    ACHTUNG ALLES LOOKENPEEPERS

    Das computermachine is nicht fur gefingerpoken und mittengrabben. Ist easy schnappen der springenwerk, blowenfusen und poppencorken mit spitssparken. Ist nicht fur gewerken bei das dummkopfen. Das rubbernecken sightseeren keepen hands in das pockets-relaxen und watch das blinkenlights.

  9. #9
    1000+ Posts BIGRR's Avatar
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    Quote Originally Posted by Wintermute View Post
    Gotta love it when it is something simple!!

    Tony.
    Would have to be simple if I got the "big kiss"!
    Wintermute and lozenge like this.
    Present fleet:-
    Peugeot 93' 205 Gti 16v
    Peugeot 73' 504 Ti from new
    Peugeot 08' 407 Hdi Coupe from new

    Previous fleet:-
    Peugeot 95' 605 Sv
    Peugeot 92' 205 Gti
    Renault 72' 16TS from new
    Renault 69' 10
    Renault 71' 10s
    Renault 68' 10 from new

    "Be reasonable do it my way!"


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