MG-Cars.info

Welcome to our Site for MG, Triumph and Austin-Healey Car Information.

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGB Technical - Alternator Output

Hi All
I put a digi meter on the battery terminals while the engine was running and got a fairly steady reading of about 13.6v but every few seconds it would give a momentary blip to 16 or 17 volts, have I got a problem or should I just live with it.
Ron
R. Algie

I would say its a problem. I think there was a post somewhere on this forum where an alternator was putting out 16 volts and was faulty. It may be the start of the end!

C Briggs

I would guess that your voltage regulator is about to fail. I know on the 1972, it can be changed rather easily. Just remove the alternator, it is under the plastic cover.
Joe D.

Thanks for the info, I chickened out and bought a recon alternator.
Ron
R. Algie

and did the problem go away?
C Briggs

Yes it did, I'm not sure how much of a problem it was but I'm due to go a touring holiday in the car so I'm looking for peace of mind.
I looked into replacing the regulator but for all the extra it was I was as well buying a reconditioned unit.
Ron
R. Algie

This thread was discussed between 29/08/2009 and 05/09/2009

MG MGB Technical index

This thread is from the archives. Join the live MG MGB Technical BBS now