ciderman

Active Member

• Nov 20, 2016

• #1

Hi, after charging the battery, my alternator light is flashing on and off . very bright and very abrupt. if I increase revs from idle, it goes out.
About the same frequency as indicator warning lamp.
I'm baffled- never seen this in over 40 years of playing with vehicles.
Ideas chaps?

 

tottot

Well-Known Member

• Nov 20, 2016

• #2

Could be the voltage regulator is going duff.

 

D

divie

Well-Known Member

• Nov 21, 2016

• #3

Try taking the plug off the back of the alternator and cleaning things up. It may be just a dodgy connection. Otherwise I am with Tottot.

 

ciderman

Active Member

• Nov 21, 2016

• #4

Raining- it can wait till later... thanks

 

D

Doo

Well-Known Member

• Nov 21, 2016

• #5

Alternator fault. Either loose connection from alternator to the "charge" lamp or perhaps brushes/slip ring almost dead.

Does it go out or change frequency if you switch on heater or headlamps?

 

dominicbeesley

Well-Known Member

• Nov 24, 2016

• #6

What is your idle speed my alternator flickers below 700rpm

 

ciderman

Active Member

• Jan 18, 2018

• #7

idle speed- all vibrates at idle.

 

R

rob1miles

Well-Known Member

• Jan 18, 2018

• #8

Is the charging light wire pulled too tight or rubbing?

 

ciderman

Active Member

• Jan 21, 2018

• #9

will check, thanks