laserred9550

Battery light comes on at about 5800rpm then goes out when I let off. Never on driving normal, charges just fine, never had to jump start or charge the battery, any suggestions?

5.0 MPG

alt

laserred9550

Third alt all have done the same thing. New not rebuilds.

90GTRagtop

Does your tensioner feel right on the idler pulley? Sounds like the belt could be loosening on the alt pulley at high RPM's. Don't know if that's normal or not cause I can't say mine heas ever been to 5800.

turt

sounds like ur alt.

90GTRagtop

Also, when you changed your Alternator, did you change your belt. A stretched belt could do that too. With the alternator's location relative to the crankshaft and other load components, it will undergo more belt push and less belt pull in comparison to the other load components (except the smog pump which isn't that high of a load and won't give a warning of slippage).