Battery or alternator ???????

[2001asp]

Hey guys, I was driving down the road and my cobra would not go onto boost. If I tried to push the throttle from any gear it would just want to stall. So I pulled over, kept the car running, and look under the hood thinking I may have l may have killed a belt. Belt was fine, so then I turned car off was thinking perhaps I needed to reset the computer...no joy. Then the car would not start after that. So then I called tow truck to come give a tow. When the toe truck arrived he helped me with a few things. We jumped the car and it seemed fine. After we removed the j-cables, it took 3 minutes and the interior gauges all crapped out and started to fail. Any thoughts

 

[03cobraaa]

I'd say an alternater. Theyre known to be bad on mustangs. To make sure I'd test it.

 

[joseph.devenney]

Alternator...have fun:thumbsup:

 

[05satinGT]

Def the alternator. Ford was nice and put it in a very convenient spot for you.

 

[2001asp]

Turned out to be a bad alt. and bad battery.

 

[2001asp]

So with a 2.76 pulley, do I need, or should I get an alt. pulley?

 

[joseph.devenney]

You should be fine w/o one if you went to ford and got an oem alt. If you went for the refurbished ones you'll be doing this again in a matter of weeks!

 

[2001asp]

Oem ford alt....

 

[ruthless]

So with a 2.76 pulley, do I need, or should I get an alt. pulley?

Just FYI...You only change the speed of the alt when the crank pulley is changed.

 

[Jimmysidecarr]

Just FYI...You only change the speed of the alt when the crank pulley is changed.

This.

The blower pulley size makes no difference to the alternator speed.

I did put a Metco 3.2" alt pulley on mine when I did my alternator about 10,000 miles ago. My lower pulley is stock.

 

[Vibora 03]

Go oem for sure I became a master at changing them out buying them from local parts stores..