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Thread: Altenator issues

  1. #1
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    Default Altenator issues

    Hi all booked my car into vx yesterday because ofmy on going problem with it being underpowered vibrated when foot is down power steering loss. he said over the phone it was the altenator???
    Because the fuel system on a cdti is electric like fuel pump and injectors would the altenator affect them and make the cars performance crap?

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    Regular Member alcutler's Avatar
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    Vehicle : vectra c 1.9cdti 120 estate

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    Quote Originally Posted by aidy-cdti View Post
    Hi all booked my car into vx yesterday because ofmy on going problem with it being underpowered vibrated when foot is down power steering loss. he said over the phone it was the altenator???
    Because the fuel system on a cdti is electric like fuel pump and injectors would the altenator affect them and make the cars performance crap?
    Hi, Alternator / battery problem would certainly account for the occasional loss of power steering and could no doubt affect the performance - the power steering draws so much power that if the alternator is not producing enough juice it will starve other things of power and you will have problems. Take it somewhere that will do you a free battery and alternator check - a lot of tyre / exhaust places round here do free checks. Alternatively charge your battery overnight with a battery charger and see if it runs ok - it should for a while until the battery starts to run down again and the problems will start again. Good luck with it

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    Full Member Penfold101's Avatar
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    The HP fuel pump on the CDTi's is driven by the cambelt, and although the tank pump is electric they both always supply more than is needed at any time, so the alternator wouldn't directly effect them. The power steering, however, IS an electric pump (except on the 2.8's ) and it could potentially, as mentioned above, draw so much current and have to make the alternator work so hard that if it wasn't working properly then it would drag the rest of the engine down too, as the drive belt which powers it is driven directly from the crankshaft itself...

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    Thanks both

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