Home page
SPONSOR AD SPONSOR AD

Topic: alternator problem?

in Forum: C3 Electrical


alternator problem?

Posted: 4/22/04 7:26am Message 1 of 5
Former Member
Send PM
SOUTHWICK, MA - USA
Joined: 6/26/2003
Posts: 336
Vette(s): 1975, L-48 coupe, 4-speed, light mods
When I drive at night I can see this the best, but it happens all the time. I notice a drain on the battery, both on the gauge and by seeing the lights dim. This happens intermitantly. With the same frequency, I also see an over charge (lights get really bright, and the gauge is over in the plus range).

When I bought the car the previous owner had replaced the original alternator with a chrome one (looks nice). I've heard that these are not the best, and was wondering if you all think this could be my problem and I should switch back to the original one?
Thanks,
Glenn


Glenn's Bright Blue 75 T-Top
L48, 4 Speed, Dual Exhaust
SPONSOR AD:: (Our Sponsors help support C3VR)

alternator problem?

Posted: 4/22/04 8:19am Message 2 of 5
Former Member
Send PM
COLUMBUS, MS - USA
Joined: 1/11/2004
Posts: 331
Vette(s): 1972 Coupe; 350 4-speed with GM sidepipes; Classic White/Saddle
First thing to check is the alternator belt. If it's loose it can give you some of this trouble. Second, check out your voltage regulator. I think it's internal on a '75 alternator; take the alternator to the parts store and have the output tested. (somebody want to check me on this one?)

good luck

John


alternator problem?

Posted: 4/22/04 9:33am Message 3 of 5
Former Member
Send PM
Corydon, IN - USA
Joined: 4/20/2004
Posts: 62
Vette(s): 1969 Black Coupe,355ci,SRT Heads,Crower Cam,Edlebrock, Holley,Bowtie 1.6 rollers,Headman Hedders,4spd,3.55 rear.
|thumb| I agree with John, have the alternator checked. If the alternator checks good, you may also want to check the belt. the wrong width belt could slip when under load, causing fluctuations in the voltage.

Good Luck!

Dave


1969 Black/Black Coupe,355CI,4spd, One Owner since 1995. |IMG|http://img15.imageshack.us/img15/8792/50th54.jpg|/IMG|

alternator problem?

Posted: 4/22/04 10:35am Message 4 of 5
Former Member
Send PM
Canada
Joined: 6/19/2002
Posts: 18
Vette(s): 75 Steel Blue Coupe
Make sure your battery connections are clean ! If they are dirty the sensors on the alternator may not detect that the battery needs charging. ALso check the connectors to the alternator - I found one on mine that was broken - replacing it solved the problems I was having with my alternator.

Good Luck !


alternator problem?

Posted: 4/22/04 12:45pm Message 5 of 5
Former Member
Send PM
SOUTHWICK, MA - USA
Joined: 6/26/2003
Posts: 336
Vette(s): 1975, L-48 coupe, 4-speed, light mods
Thanks everyone, I'll check it out tonight.
|cheers|


Glenn's Bright Blue 75 T-Top
L48, 4 Speed, Dual Exhaust

in Forum: C3 Electrical


SPONSOR AD: (Our Sponsors help support C3VR)