Alternator

[james432]

i pulled the battery cable off and the car and it died.. my dad said it should stay running with the alternatior if not that means it bad is that true..im seeing if its the batt or alternatioe

thanks

 

[05stroker]

i pulled the battery cable off and the car and it died.. my dad said it should stay running with the alternatior if not that means it bad is that true..im seeing if its the batt or alternatioe

thanks

That is correct .

 

[james432]

k thanks looks like thats my problem :

 

[Redwolf]

Not true for all vehicles. Not sure if Mustang would fall under this. This is an old method that worked on vehicles from the 70's and 80's that was able to work then. A lot of newer, more advanced electronic systems on todays vehicles will require the battery cables to be connected while a vehicle is running. Even if the alternator is good, the vehicle may shut off due to a loss of a completed curcuit or even create a spike. This is not always the best way to check the alternator. Todays alternators are tested at idle and put under a load to check its strength. Alternators from 20 to 30 years ago operated at 70-80 amps, todays standard is about 120-140 amps. Leave it on the vehicle or remove it to have it tested for accuracy.

No dis-respect 05stroker, I know your knowledge on these cars is better than mine. Just giving my experience on this issue.

 

[StickShifty]

you can give this a quick try. its worth an extra 10 minutes.

http://www.youtube.com/watch?v=dq24oPUVmdA

 

[05stroker]

Not true for all vehicles. Not sure if Mustang would fall under this. This is an old method that worked on vehicles from the 70's and 80's that was able to work then. A lot of newer, more advanced electronic systems on todays vehicles will require the battery cables to be connected while a vehicle is running. Even if the alternator is good, the vehicle may shut off due to a loss of a completed curcuit or even create a spike. This is not always the best way to check the alternator. Todays alternators are tested at idle and put under a load to check its strength. Alternators from 20 to 30 years ago operated at 70-80 amps, todays standard is about 120-140 amps. Leave it on the vehicle or remove it to have it tested for accuracy.

No dis-respect 05stroker, I know your knowledge on these cars is better than mine. Just giving my experience on this issue.

None taken , I don't know it all buy any means . I assume if it dies then its bad (from my exp.). You may have educated us if I am wrong . Problem is , now we we need someone to confirm . LOL