alternator getting realy hot.

[krazy2o9]

ok well this all started happening when the smog guy redlined my car, i notice that on the way home my car was running on 9v. at first i thought it was the brushes so i changed them to new ones, but still the alternator wasent charging the battery then replaced the rectifire in the alternator couse not 1 of the 4 ports had any ohms to the +, so replaced it with one off a 88 nonturbo, but same thing so put back the old one, and still no charging, since i have the fuse box in the dash i have to run the alternator wire threw the old heater core port, i found that the wire was melted on the egr pipe so fixed that, and found that the 15a engine fuse was blow so replaced it and now it charges at 14 then after like a 30 sec it goes to 13.8 and stayes ther. and still after around 1 min you cant even touch the alternator, its way to hot. and when i put volt meter to the body of the alternator and the ground on the chasi i get 0.07v is this normal?

i know that alternators get hot, well becouse thay make power but it never got this hot before.
this is were im stuck and have tested alot of stuff, this is were i need help.

 

[Nick M]

Did you ever touch it before having problems at operating temps?

 

[krazy2o9]

ya. with the engine warmed up to normal operating temp it use to be just a bit hotter then the intake manifold. i havent drivien it yet but after i put on the cat ima take it to get smog and will see then if the vent hose thats behind the alternator melts, im sure it will


o and had another question. was wondering if the ground bolt on the brush holder needs to be touching the fram in the bottom. it looks like ther needs to be a right size bolt to go trew and touch the bottom? mine is not touch right now

 

[vidar540]

Hi. If the alt is pushing out a lot of amps it will get hot. If the battery is almost empty it can take alot of amps to recover power it has to store inside.

Now the other question, The bolt can NOT touch ground, the regulator has that job.

Regards Viddi.

 

[krazy2o9]

sounds right. my battery was dead and had to be jumped. it was on 9 volts at once. and the bolt, thanks for clearing that up. this was realy good info for me. thanks. now ima have it fully chaged then try if not its time to upgrade battery, mine is realy old cheap battery and not even the right one