Alternator From Hell
 

I replaced my alternator (89'G.T) last week. Ran fine for a few days. Now my AMP light goes on and my gauge shows that my new battery is draining. Its also making a combination grinding and whistling noise. Did I just get a bad alternator. The install wasn't brain surgey. I can't think of anything I could have done wrong. Thanks.

[This message has been edited by RMARIANI (edited 01-04-2001).]

I bet it is a defective alternator.

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67 Fastback - Arctic White Pearl paint
351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Comp. Cam, Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars.

My 351W Fastback

Yeah, that's what I'm hoping. Can't think of what else it could be.

I used to work at Napa in high school, and we had a lot of alternators come back bad.

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67 Fastback - Arctic White Pearl paint
351W ,Trick Flow Aluminum Heads, Edelbrock TorkerII, Comp. Cam, Performance Automatic C-4 Trans, 3.55 gears, Front Disc Brakes, 1-1/8" Fr. 3/4" rear sway bars.

My 351W Fastback

Bad alternator's out of the box especially "rebuilt" ones, are not uncommon I bet I have had at least a dozen bad ones over the years - try another one and you will probably be fine

Thanks for the confidence boost guys. I'll let you know what happens.

Did you try kicking it?...that usually works for me http://www.mustangworks.com/interact...rd/biggrin.gif
No, but seriously, if its making funny noises it must just be bad. I just replaced the stock one in my 92GT for a 130AMP from a 94 I found on ebay and since then my amps are fine.

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1992 GT 5.0L Convertible
BBK Shorties
All Power
Super Chip
Mass Air

yea when you get a new one ask for a AOD one..they will swap right in(just have them rotate the back casing 4 u) and they are 10 more amps..or just do what i did and get a 130amp 3g..easy swap

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1987 black notch(ex 4 banger)
DSS 306 w/ main support...Elderbrock 6028 heads..gt-40 intake..24# injectors...70 mm tb..77 pro-m...accel 300+..mac full legnth..tremec w/ pro5oh...full MAC exhaust,off road h-pipe,long tubes, catback...ron davis radiator..subframes, control arms...CFDF II..o yea holley FPR sucks..dont buy one..