evoblade 0 Posted October 11, 2004 I have noticed over the lkast week that when my VR6 returns to the tick over the lights dim significantly untill the engine is reved again. When i got to work today i could hear the battery fizzing and it looked as though acid had escaped and sprayed over some of the engine parts. Can anyone help! Is my problem stemming from the alternator overcharging the battery? Quote Share this post Link to post Share on other sites
Ice White Socks 0 Posted October 11, 2004 Isn't there some kind of voltage regulator that prevents overcharging. Like you say if that failed then it would overcharge the battery- can't think of anything else that would boil the acid :? Quote Share this post Link to post Share on other sites
evoblade 0 Posted October 11, 2004 Do you know if this is a replaceable part or would it be a complete new alternator assembly :D Quote Share this post Link to post Share on other sites
Kevin Bacon 5 Posted October 11, 2004 Either the battery is dead or the altenator is over-cooking it as mentioned. You need to pop down to an auto-electricians and get them to do a test on the alternator to see if it's pushing a DC current. If it's pushing a waveform (AC current), the diode pack is dead and will need replacing. I think you can get spares for VR alterantors but the last car sparky I spoke to about it said they are almost as cheap to replace than rebuild, so that would hint at the costs involved. Alternators start from about £90 from the dealer (exchange) for a 70 amp, up to around £200 for a 120 Amp one. Go for the latter if you plan on big ICE, if not a 70 or 90A one is plenty. There is a choice of Valeo or Bosch, so you need to mirror the details on your current one. Quote Share this post Link to post Share on other sites
