Do I need to replace the Alternator??

[cinquecento]

Normally battery voltage is around 13v on the LCD.. however reccently I get a reading that varies between 11.8v (with an error on the LCD) and 15.5v. It clears after 2-3 seconds however is becoming more and more frequent. When the engine bay is hot in traffic.. volatge is reading almost constantly either high or low.

Am I right thinking my alternator's regulator is on the way out and are they a servicable item.. or do I need a replacement alternator?

[Getsis]

My car has been doing this, it's in with TVR Power at the moment, I think it's the voltage regulator on the alternator. Not sure if these can be replaced easily on this type of alternator though.

Edited by Getsis on Monday 7th November 12:27

[cinquecento]

Thanks..when you find out from Power could you post the outcome??
thx

[cinquecento]

Alternator is fixed.

Under the nyloc that tigthens the heavy lead from the battery is another nut that tightens a bush to the alternator. This bush clamps the alternator output stud to the regulator input... which is a thin washer.

The nut was loose...