Charging problem-help?

[Sam Gamgee]

Hi all....just been out freezing my nuts in griff, seems to be running a little rough.
Noticed that the dash instr. is only reading 12v or less. Has always read 14v ish. Another thing is that as I revved, well, the higher the revs the lower the reading, dropping below 12v....
Battery was changed a couple of years ago, never really had a problem like this and I`m not great in the leccy dept, really! I keep the batt charged when not using car with accumate charger, doesnt get used every week in winter.
Searched the forums to no success, nothing really similar.

Help appreciated all.....

Regards
Dave.

[yellowgriff]

If the fan belt was slipping it would scream when you revved it up.. Sounds like the alternator dead or dying.. sorry GOLDIE

[David Beer]

I would check the famous 100 amp fuse, on the chassis between the starter and alternator.

[Sam Gamgee]

Yep, goldie could be that-and appreciate the sorry bit! Alternator is 10 years old according to p/work....

Will check that fuse also-where is it likely to be? Never had to look for it before....rather will it be below engine bay or on top so to speak??

Cheers
Dave.

Edited by Sam Gamgee on Saturday 28th March 19:56

[yellowgriff]

Dave... Hi goldie here again im new to griffiths but have owned a car body shop for thirty years,, the fuse hes talking about is under the car bolted to chassis n/s (passenger) i thinf,, & they say its from a ford, Can be puchased of e bay saves running around,,, If the fuse isnt blown, Run car up disconnect battery if car stop runner defo alternator,,, you can have it overhauld it ussually just the brushes Or be on the safe side fit new.. Exchange 100/125 i recon... good luck in morning,,,, GOLDIE

[Sam Gamgee]

yellowgriff said:

Dave... Hi goldie here again im new to griffiths but have owned a car body shop for thirty years,, the fuse hes talking about is under the car bolted to chassis n/s (passenger) i thinf,, & they say its from a ford, Can be puchased of e bay saves running around,,, If the fuse isnt blown, Run car up disconnect battery if car stop runner defo alternator,,, you can have it overhauld it ussually just the brushes Or be on the safe side fit new.. Exchange 100/125 i recon... good luck in morning,,,, GOLDIE

Thanks for that, will save time tomorrow. Will get new, easier, makes most sense....intend to check fuse first....put it on charge as usual til tomorrow. tried to nose round this evening but garage isnt largest, need to get it on my drive...

ta for quick reply!!

Dave.

[Loubaruch]

Also worth checking that the cabling to your alternator is OK before writing off the alternator.

Disconnect your battery and check that the terminals are clean and tight. If you have a meter measure the resistance from the main alternator terminal to your battery positive (with battery disconnected) It should measure a fraction of an ohm.

Best of luck!

Edited by Loubaruch on Saturday 28th March 22:15

[Sam Gamgee]

Thanks muchos! Will do (got a multimeter!).

Dave.

[Sam Gamgee]

just to update...alternator sh*gged, replaced, problem solved......to be replaced by another little gremlin doh!!

Dave.

[yellowgriff]

Glad that one problem though is fixed.. Its crap when you have 2 or three at once it makes you sick with the car.. Hope the second prob is just as easy to fix... GOLDIE

[Sam Gamgee]

yellowgriff said:

Glad that one problem though is fixed.. Its crap when you have 2 or three at once it makes you sick with the car.. Hope the second prob is just as easy to fix... GOLDIE

Cheers mate!

Dave.