Could someone check the voltage of thier alternator for me?
Thread Starter
Joined: Jun 2005
Posts: 881
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From: NE Arkansas
Car: 1971 Camaro
Could someone check the voltage of thier alternator for me?
Could someone measure thier alternator and tell me what it's putting out @ idle voltage wise? Thanks!
My car's a 1990 TPI set-up and it's only putting out around 11.99 - 12.00 volts @ idle......two different parts stores says my alternator is fine...it's brand new and the battery is new.
My car's a 1990 TPI set-up and it's only putting out around 11.99 - 12.00 volts @ idle......two different parts stores says my alternator is fine...it's brand new and the battery is new.
Senior Member
Joined: Jan 2007
Posts: 382
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From: Illinois
Car: 89 Firebird
Engine: 350 Ramjet
Transmission: 700R4
Axle/Gears: GM 9 bolt 3:27
Re: Could someone check the voltage of thier alternator for me?
A fully charged battery should read 12.6V and a good alternator should have a 13-14 Volt output. If the alternator tests good at two different places you might have a wiring issue with the wires that plug into the regulator.
Thread Starter
Joined: Jun 2005
Posts: 881
Likes: 0
From: NE Arkansas
Car: 1971 Camaro
Re: Could someone check the voltage of thier alternator for me?
I figured it out, one of the wires on the plug that went to the bulb in the dash was acting up. The bulb was blown...fixed that and started getting 14.5 volts again.
Supreme Member
Joined: Jul 2006
Posts: 1,674
Likes: 3
From: Windsor Ontario
Car: 1987 Firebird Formula
Engine: 2004 LQ4
Transmission: T-5 WC
Axle/Gears: 3.42
Re: Could someone check the voltage of thier alternator for me?
13.2-14.8 Volts is good, anything lower, or above, is bad.
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