Motortopia: Where your passion parks

Motortopia: Where your passion parks.

Why Join Motortopia? Connect with other enthusiasts... Chat! Add Friends! Challenge! Private Message!

  1. cars
  2. bikes
  3. boats
  4. planes

Cars > Groups > Ford Mustang Enthusiasts > Forums > General Discussion > Need some alternator help!!

 

Forum: General Discussion

  • Topic: Need some alternator help!!
  • Started by mustang347gt Jun 18, 2008 at 2:18 pm
  • Last post by mustang347gt Jun 18, 2008 at 2:18 pm
  • This topic has been viewed 384 times and has 0 replies
more search options
 

Topic: Need some alternator help!!

Forums > General Discussion > Need some alternator help!!

Page 1 of 1: 1 Posts 1 – 1 of 1  

  1. #1 Jun 18, 2008 at 2:18 pm

    mustang347gt’s Profile Photo
    mustang347gt
    Total posts: 9
    Send Message
    I REALLY need some help with my alternator problems.... if anyone has any ideas please help me out!!!

    I had purchased a 140amp powermaster alternator with a one wire hook up an internal voltage regulator a little less than a year ago. I had the alternator on my 86 mustang and it ran just fine for 9 months. I only put about 200 miles on the alternator and every time I drove the car it was always charging really well and putting out about 15 volts. it started showing that it was only charging with 12 volts so I took it to the advance auto i purchased it from and they said that the diode was going bad. They replaced it with a 100 amp unit because there were no 140 amp units available. I put the 100 amp unit onto my car and within 10 seconds the front pulley was squealing really badly and the front pulley was burning hot. I took my car to the advance and they tested my charging system and I only had 12.3 volts the whole time it was running no matter what the engine speed. I took the alternator off and they tested it and it was bad. The front pulley on that unit was a little bent so thats what we figured the problem was. They warrantyed me one more unit. They got me another 100 amp one wire unit and I hooked it up and no squealing.... but the front pulley gets too hot to touch after only about 10 seconds. the other problem is that when I hook up a volt meter to the alternator it is only showing 12.4 volts no matter the engine speed. I ran through all the trouble shooting on the installation sheet and everything checks out ok.... If I disconnect the alternator charge wire and start the car, my volt meter is showing that the alternator is giving out 35-45 volts and the front pulley doesnt get hot....

    so here are my problems.... within seconds after starting my stang the front pulley on the alternator is too hot to touch... the alternator checks out good at the parts store but isnt charging when in the car.... if I disconnect the alternator charge wire and run the car the pulley does not get hot and my volt meter shows 35-45 volts.... What could be the problem? I am running dual electric fans, a holley electric fuel pump, and an MSD 6al ignition box.... is it possible that the 100 amp unit cannot keep up with the power needs of my car? I have gone through every ground wire, every power lead, made sure all the pulleys lined up right, had my battery and alternator checked.... I'm really at a loss as to what the problem could be.... If anyone could possibly point me in the right direction that would be great! thank you very much!! scratchchin image
     

     

    >>>>> Drive It Like You Stole It<<<<<<

Page 1 of 1: 1 Posts 1 – 1 of 1  

login to reply  

Forums > General Discussion > Need some alternator help!!

Download Drive Magazine Now!
 

Cars > Groups > Ford Mustang Enthusiasts > Forums > General Discussion > Need some alternator help!!

Print your passion at Motortopia.com (http://www.motortopia.com)