jaks14 174 Posted April 8, 2014 Report Share Posted April 8, 2014 Had car to test today, passed with only a close tyre limit and a side light bulb out as advisorys. .. 2 issues.. Firstly. left the MOT station and the battery light came on permanent.. got it home, went back out to go get tax and totally flat.. am I right in thinking the alternator has packed up and not charging battery? It's a brand new battery just 2 days ago so I can't see it being that.. advice would be awesome? ? Secondly, on way to station car over heated and steam from bonnet, stopped, engine off and lifted hood to find header tank steaming.. checked rad pipes 1 very hot and the other freezing cold. . Once again am I right in thinking the thermostat has packed up? It's been standing for around 2 years so I was expecting a few little bits and pieces to be shot and it was bought as a project. . All information you guys can provide would be greatly appreciated.. Sent from my SM-N9005 using Tapatalk Link to post Share on other sites
Daverse 175 Posted April 8, 2014 Report Share Posted April 8, 2014 1) could be alternator, check battery and alternator are rated to the size of the engine. Stick a multimeter across the alternator while its running. 2) definitely a blockage somewhere, sounds lime thermostat. What pip was hot?Sent from my GT-I9300 using Tapatalk Link to post Share on other sites
jaks14 174 Posted April 8, 2014 Author Report Share Posted April 8, 2014 Top pipe was hot mate and bottom was cold.. I got the better uprated battery for car. . I think 075... just that was for the vr6 engine ..(used regards from my mates mk3 vr)...Sent from my SM-N9005 using Tapatalk Link to post Share on other sites
jaks14 174 Posted April 8, 2014 Author Report Share Posted April 8, 2014 Been quoted £50 to supply and fit thermostat and he's gonna try and refurb my alternator... To be fair I expected a lot more to go wrong with it on MOT as I didn't have anything other than its service history. . Sent from my SM-N9005 using Tapatalk Link to post Share on other sites
Ickyketseddie 89 Posted April 8, 2014 Report Share Posted April 8, 2014 Silly question I know but I take it the aux belt hasn't snapped? Otherwise yeah it sounds like alternator, test it like adverse said. Sent from my iPad using Tapatalk Link to post Share on other sites
Lukey. 381 Posted April 8, 2014 Report Share Posted April 8, 2014 14v doesnt necessarily mean the alternator is giving good current though, my alternator went bad but still gave 14v, just didnt have the guts to charge the battery anymore, painfully expensive Link to post Share on other sites
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