MG-Cars.net

Welcome to our resource for MG Car Information.

Recommendations

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 MGF Technical - Dodgy alternator?

I have got a problem with the alternator. It is charging the battery OK, but the voltage is unstable. It fluctuates between 13.5 and 14.5V, this is very noticeable when driving at night and seeing the headlights almost flashing.

I'm guessing the rectifier is on its way out. Does anyone agree and is it a bolt on part or a new alternator?

Thanks in advance
R
Richard P

New alt, IIRC the rectifier is internal.

Do you see the voltage on a meter - or are you guessing?
Will Munns

On a meter :(
Richard P

Check the large connector to the alternator. If it is loose it can cause the symptoms you describe. Bitter experience etc....

HTH

Bruce
Bruce Caldwell

And if the connectors are fine,
you could try to sourcing a rectifier from second hand or a spare. High risk though.
May be, and this is unfortunately not approved, may be the Bosch p/n F 00M 145 269 will do it.

http://www.mgfcar.de/alternator/Lima06.jpg
http://www.mgfcar.de/alternator/index.htm

Regards
Dieter
Dieter

This thread was discussed between 19/07/2005 and 21/07/2005

MG MGF Technical index

This thread is from the archive. The Live MG MGF Technical BBS is active now.