Intermittant alternator output:

150K '93 22RE 2wd, everything stock except recently installed ENGNBLDR timing chain and head gasket kits.
Works great (thanks, ENGNBLDR <img src="/forums/images/graemlins/kewl.gif" alt="" />) except:
On most engine starts, two dash lights come on: "Battery/Alternator" and "Brake". Sometimes these lights go out on their own, sometimes not.

When these lights are on, the voltage gauge also drops down -- pretty good indication that charging is not happening.
Also, garage automatic battery charger indicates that battery is becoming discharged when running for extended periods of time with dash lights on.

Engine runs fine whether charging or not, and I can't find any loose wiring connectors.

Any suggestions? When alternators fail, can they be intermittant like this?

Thanks in advance,
Ed

Don't throw that alternator away... Get new alternator brushes, and replace them. The alternator will work fine afterwards...

www.4x4wire.com/toyota/maintenance/alternator_brushes


<img src="/forums/images/graemlins/smile.gif" alt="" />

You guys rock! <img src="/forums/images/graemlins/cheers.gif" alt="" /> <img src="/forums/images/graemlins/kewl.gif" alt="" />

Thanks,
Mr_Edly

> "If you have a early model Toyota 4Runner or pickup and the charge and brake lights on the dash light up at the same time, there is a good chance that your alternator will soon need replacement."