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07-26-2009 #1
Registered User
- Join Date
- Oct 2007
- Location
- orange county, california
- Posts
- 609
alternator only charging 9.5 volts
so i have a cammed 95 trans am LT1 with 6 speed in a 69.
My car kept having the battery drain so i checked my alternator adn it was pushing 9.5 Volts. So i replaced it since i have a lifetime replacement in it. The new one is also only putting out 9.5Volts.
The battery is a top of the line diehard gel battery that was recently replaced. So im not sure why i cant get the alternator to charge back the proper voltage. Im tired of dead batteries.
any ideas. thanks
"What is each day but a series of conflicts between the easy way and the right way?"
69 camaro, daytona blue. LS376-495 (Hotcam LS3), TR-6060 6-speed
Tubular control arms with coilovers
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07-27-2009 #2
Registered User
- Join Date
- May 2009
- Location
- Houston
- Posts
- 149
You should take a look at the battery cables. Grab a volt meter and do voltage drops on the cables while cranking the vehicle. Before doing that disable the ignition or fuel so the vehicle does not start.
Check: (while cranking the vehicle)
battery + to starter
Battery + to altenator
Battery - to body
Battery - to engine
Altenator case to ground
If you have had the battery tested and the test shows good, well its probally good. Have you had the new altnator tested? It could be bad, but since its doing the same thing the other one is, probally not. Check those wires and post back up.
Clint
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