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#1
12-11-2005, 06:26 AM
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Voltage Problem
I have a 2002 Camaro and somtimes when it is cold out the voltage meter gos to about 15 1/2 volts. Anyone know what could cause this or if this is a common problem with this car. Thanks
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#2
12-11-2005, 06:46 PM
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Re: Voltage Problem
The voltage generated by your alternator is controlled by your PCM via your voltage regulator. It engages your pulley clutches when triggered. When you start your car in cold weather it takes more energy for your battery to start the car which then your PCM tells your alternator that it needs more amps. Which then creates more power. Its normal, mine does it too.
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RIP Hypsi - I just want to express I will never be the same after having lost such a good friend. You meant alot to me and I feel I am a better person for having known you. Til the day we meet again my friend you will always be in my heart. Mods: Weight reduction (I don't wear underwear)
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#3
12-12-2005, 08:43 AM
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Re: Voltage Problem
pulley clutches Uhm? I though it had a regular cs133D that doesnt have any cluthes and stuff
15 1/2 a bit too much, why not 14 1/2 (on the safe side) i agree it needs more amps, but that many volts. Wont this waste the battery pretty fast like that.
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#4
12-12-2005, 12:42 PM
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Re: Voltage Problem
What do you think causes your alternator to generate more power when prompted by the regulator if there are no clutches?. Also a cs133 is a older style alternator, GM started using a CS144 series on most F-bodys starting around 95.
__________________
RIP Hypsi - I just want to express I will never be the same after having lost such a good friend. You meant alot to me and I feel I am a better person for having known you. Til the day we meet again my friend you will always be in my heart. Mods: Weight reduction (I don't wear underwear)
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#5
12-12-2005, 06:32 PM
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Re: Voltage Problem
yea.. higher voltage (when cold) is normal. and it doesn't drain the battery. However, I'm not aware of any clutches in an alternator. to my understanding they mostly consist of a generator (essentially an electric motor) which is turned by the pulley at the speed of the engine. the level of power output is determined not by varying the speed with clutches but with the built-in voltage regulator. This is my understanding.
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 90 Camaro RS V6 - swapped to V8 -350 block, GM Vortec L31 Heads, Edelbrock Performer RPM Vortec intake, 750cfm carb, CompCams XE268 Camshaft ESTIMATED 360-420 hp 380-430lb/ft torque 
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#6
12-13-2005, 09:02 PM
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Re: Voltage Problem
does a cs133 have clutches? if you bought a new or rebuilt alternator for a third gen today would it be a cs144?
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92 z28 camaro 5.7 TPI current - slp intake runners and base-BBK 52mm throttle body-MSD 8.5mm wires, blaster coil, and 6AL Box-edelbrock headers-160 degree stat.-hotchkis strut tower brace waiting in the garage - LQ4, milled heads 317 casting (10.5 to 1), hardened pushrods, ported LS6 oil pump, manley dual spings with titanium retainers, MTI X1 cam, hawks longtube headers 
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