Pulsing Lights

[Flintstone]

Noticed a little while ago that my lights 'pulse' as if the alternator is putting out an uneven current/voltage. The higher the engine revs the faster the pulse. According to the readout it's putting out up to 14.7 volts with no obvious fluctuation but I suspect that the pulsing is quicker than the sensor/readout could react.

Any ideas?

[nelly1]

http://www.pistonheads.com/gassing/topic.asp?h=0&a...

[Flintstone]

Note to self. Use more keywords when searching.

Thanks for that.

[andyoleary]

had the alternator changed and it is as good as gold now, 14v pretty constant, no pulsing. As it got worse it started to affect the actual running/idling of the engine so soonest fixed is best I think.



Andy

PS: Looked like a pig of a job to do actually.....glad I decided to get it done by a man with all the right tools..

[Flintstone]

The obvious question, cost?

[andyoleary]

I got a replacement 100A unit from TVRCarParts for around £130 and it took about 1.5hrs to fit (pulleys need to be swapped over which can be a pain in the proverbial if you don't have the right tools...)

Andy

[Flintstone]

Local auto electrical specialist wanted £220 + for an 'original Magneti Marelli' item, tvrparts say theirs (unbranded) work fine so at £130 I've gone for that.

Thing is my old one was apparently rated at 120 amps. I thought they were all 100 amps?

Edited by Flintstone on Monday 15th September 18:38