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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Overtightening Alternator Pulley

  • Thread starter Thread starter MachAzure
  • Start date Start date Mar 22, 2004

MachAzure

New Member
May 9, 2003
133
0
0
Atlanta, GA
Mar 22, 2004
#1
  • Mar 22, 2004
  • #1
This weekend I put back on my stock alternator pulley to see if my volts would go up at idle.

Well, I accidently droppend a wrench between the two battery posts and it sparked really bad. When I drove it today, the volts stayed around 9 or 10 the whole time.

My Chevy buddy told me I could have overtightened the alternator pulley with my electric impact wrench and ruined the internals of the alternator.

Well, I tried starting it again and it would not start so I switched in a different battery and put back on the underdrive pulley and everything is good. Could it be the battery just crapped on me? For a few days before the interior lights had been rather dim.

Is it possible to screw up the alternator by overtightening?

Thanks,

BTW- I will have my battery load tested tommorow.
 

daver01

Founding Member
Oct 4, 2002
396
0
0
Lexington, Ky
Mar 22, 2004
#2
  • Mar 22, 2004
  • #2
i have never heard of that. as tight as it is on there from the factory, i kinda doubt it too. maybe if u like had a breaker bar and wailed on it, but not with an electric impact.

maybe u just shorted out your batt. that'd be my guesstimate.
 

GTblack_00

New Member
Mar 23, 2003
494
0
0
Tampa Bay Area, FL
Mar 22, 2004
#3
  • Mar 22, 2004
  • #3
I would have to say unless you have a nice optima or other deep cycle battery that you fried your battery. A wrench in the works can draw much more current than the plates in most batteries can withstand.
 
M

mhissticobra

Member
Feb 12, 2004
61
0
6
Mar 23, 2004
#4
  • Mar 23, 2004
  • #4
I'd say you shorted your battery as well
 

husun

Founding Member
Mar 22, 2002
564
0
0
clark, nj
Mar 23, 2004
#5
  • Mar 23, 2004
  • #5
yea, i dont see how it is even possible to overtighten it as it would just spin freely less the resistance of the belt.
 
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