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battery light came on
- Thread starter hazmat404
- Start date
hazmat404 said:
I'm taking a wild shot here and gonna say your alternator took a crap. Mine lasted untill 16k miles. To check, get your self a volt meter (sears has them for pretty cheap). Put it on the DV volts scale. Hook it up to your battery. With the car running you should be charging around 14 volts give or take a couple tenths. Anything under that your alternator is junk. You might have 14 volts at idle but you said it comes on randomly so it may not be charging when it gets warm. Good luck changing the alternator it was a PITA that I don't look forward into doing again, with the engine in the car anyways. Here is a link anyhow. Any more questions shoot me a PM.
http://www.svtperformance.com/forums/showthread.php?t=182632
Kevin
well i want to upgrade and ive been looking around. i should prob go with a 130 amp correct but i was wondering about the new pulley everyone is talking about that i would need. does that mean a new belt that i would need too? just curious cause i want to buy one tonight so i can get it by early next week. thanx
waaay more than i can afford right now. i want to do it right but close to top of the line isnt an option. im checking out ebay and shit like that. whats the deal with the new pulley too and is most of the alts just straight replacements or need new brackets too? these modular engines still scare me. i liked my simple 5.0 lol
its the alternator...
just get a stock one? i dont know whats there to suck about it...since u dont have any hardcore car audio in your car i dont see a need to spend a crapload to upgrade....i had the same problem and i got another ford one and its doing its job and if i remember right i didnt pay an arm and a leg for it...hope that helps :biggthump
just get a stock one? i dont know whats there to suck about it...since u dont have any hardcore car audio in your car i dont see a need to spend a crapload to upgrade....i had the same problem and i got another ford one and its doing its job and if i remember right i didnt pay an arm and a leg for it...hope that helps :biggthump
hazmat404 said:
I bought this one for my cobra
http://www.pa-performance.com/display.asp?sku=156
They are from PA performance, I've used their alternators & starters on my 5.0 too, they make a GREAT product. You re-use your old pulley. You don't need any brackets or a new belt. Dude don't be scared, they are the same as a 5.0 just more bracket and stuff, thats the best way to think of it. It is the same as a 5.0 just in a shit-less spot.
All of the problem with the alternator's are due to the fact that they are ran off the supercharger belt and over spun, another great idea by ford.
Kevin
Ford alternators are not very good quality and PA is having big problems too, even with a larger alternator pulley to slow it down.
Mine lasted 4,000 miles with the oversize pulley.
It was replaced under warranty and this one still works after 6,000 miles.
PA has a lifetime warranty, but everytime it goes out, you have to have something to put in its place.
Maybe you can find someone to rebuild yours?
Mine lasted 4,000 miles with the oversize pulley.
It was replaced under warranty and this one still works after 6,000 miles.
PA has a lifetime warranty, but everytime it goes out, you have to have something to put in its place.
Maybe you can find someone to rebuild yours?
well i went with a 130amp PA. worse come to worse i can have someone rebuild this one next month or something and have it as a spare if the PA decides to give out. its my DD so i cant really screw around with it not working.
on a side note, drove about 30 min to and from work today without it coming on. was scared i wasnt gonna make it but everything turned out ok for now. hopefully the PA will show up early next week but i might snag that number from you about your friend that rebuilds them so i can have a spare down the road
on a side note, drove about 30 min to and from work today without it coming on. was scared i wasnt gonna make it but everything turned out ok for now. hopefully the PA will show up early next week but i might snag that number from you about your friend that rebuilds them so i can have a spare down the road
I found the Ford alternator to be the best choice. Had no problem with them when I had my 97 SHO. And if anyone has working knowledge on the labor hours it is to replace a 97 SHO alternator, you know it is a replacement you only want to do once.
The ALT is located on the left side of the motor, down by the subframe. No access from the top, only access is from the bottom, and you must remove stuff to get to it.
The ALT is located on the left side of the motor, down by the subframe. No access from the top, only access is from the bottom, and you must remove stuff to get to it.
RD SNAKE said:
Ford didn't build terms with 2.xx pullies so don't go knocking them, in stock form it will last years. There's a reason why warranty's go void if you modifiy a car.
on subject: yes it's your alternator.
Buy a larger alternator pulley. I know there's a huge thread on svtp about 03-04's loosing voltage at the top end due to these pulley's so try to do a little research on what to get, I'm sure Bob k. can enlighten you on the subject.
Ford's alternators are notriously weak and prone to failure. Over spinning them just adds to the problem. But they fail, even if they aren't overspun, as they come from the factory. Whether it is the basic design of the drive system that is flawed or the alternator itself, there has been a disproportionate number of failures.
Having driven Ford Fleet Duty vehicles for the last 15 years or so, I have seen failures that should not have occurred. Failures occurring on an average of every 6 months and these were not overspun, in fact they spent a majority of their brief life just idleing.
The problem is that the alternatives in a reasonable price range are proving to be just as troublesome.
Having driven Ford Fleet Duty vehicles for the last 15 years or so, I have seen failures that should not have occurred. Failures occurring on an average of every 6 months and these were not overspun, in fact they spent a majority of their brief life just idleing.
The problem is that the alternatives in a reasonable price range are proving to be just as troublesome.
You're not missing anything. The lower will overspin anything on the same belt, including the idlers, something a lot of people never think about.nytebyte said:
The smaller blower pulley by itself, will only effect the blower.
BUT, even with the stock lower, the alternator is being overspun. At 6500 it is turning over 18,000 RPMs, which is probably too much.
Dan
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