Alternator, wiring problem?

[BiGBoY]

Hi, here is my problem. I started for the first time, since many month ago, my car. The engine bulb lighted on. The Gen light lighted on but just when I rev up the motor to 2500 rpm (and its stay on). So I checked what kind of voltage I could find. I restarted it and t idle the altern. is charging at 12.5v. I gave a shoot of throttle at least to 2500rpm and the Gen light come on again with a more reasonnable charging of 14.71v at idle. When I rev it up it's around 14.75-14.80v. I checked the connection at the alternator and cleaned it although it was okay.

What could be the trouble as the engine light is on at the same time. ?? (probably not the same problem, I don't know)

I cleaned all my grounds like every spring, checked all the spark plugs, carb links, fuel links but for the wiring I don't know where to begin... I need a little help !!



Thanks !

 

[b4black]

Find out what the engine light is complaing about:

Retireve the codes with a paperclip:
http://www.gnttype.org/maint/malf.html

These codes might be more appropriate for a NA V6:
http://home.flash.net/~rjgeorge/ecm.htm


14.75V might be too high (not sure on the OK range).

 

[pat83t]

Actually ok range is up to 16 volts. Might be low amp output though or faulty diodes.