My Fans are killing my alternator heeeeelp :(
03-17-2009, 04:36 AM
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My Fans are killing my alternator heeeeelp :( I don't know if this is the right place to post this thread
well I have a 160* thermostat i don't have any over heat issues
my coolant temperature never exceed 205 but i have a problem when i stuck in a traffic jam my fans keep working hard together and after 15 min my alternator voltage keep drooping until 12.8V
my fan settings as my tuner make them :
both On at 201
both off at 190
are those good settings ?
i think one fan should work first then if the temperature keep climbing then the other one should work to support first fan.
and yes this is a new alternator and new battery
well I have a 160* thermostat i don't have any over heat issues
my coolant temperature never exceed 205 but i have a problem when i stuck in a traffic jam my fans keep working hard together and after 15 min my alternator voltage keep drooping until 12.8V
my fan settings as my tuner make them :
both On at 201
both off at 190
are those good settings ?
i think one fan should work first then if the temperature keep climbing then the other one should work to support first fan.
and yes this is a new alternator and new battery
03-17-2009, 12:36 PM
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03-17-2009, 12:53 PM
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I would go to a shop and have them check the amp out put of the alternator. My fans run almost all the time, they never shut off in town and thats all I drive, My alt charges 14 V all the time.
03-17-2009, 01:14 PM
#9
12.8V is on the low side in any circumstance with the car running.
Do you have an underdrive pulley / balancer? If so, that's your problem.
If not, your battery or alternator are getting weak.
Do you have an underdrive pulley / balancer? If so, that's your problem.
If not, your battery or alternator are getting weak.
03-17-2009, 01:21 PM
#11
UDPs run everything on the belt slower, by definition, causing less "drag" on the crankshaft. Your PS, water pump, alternator, & AC will NOT operate at their peak RPM.
So as a result, you're putting more strain on your accessories at low RPM, but getting more horsepower.
So as a result, you're putting more strain on your accessories at low RPM, but getting more horsepower.
03-17-2009, 01:23 PM
#12
That could be why your fans keep coming on - because your water pump can't keep up with the demand, so the fans come on, which drains your alternator, which strains the battery, which robs your spark efficiency..... etc.
03-17-2009, 02:17 PM
#15
No. Because then you're putting MORE electronics on to strain your already hurting charging system. If you bypass your water pump & A/C, your alternator IS STILL going to spin slower with the UDP. If it was my decision, I'd get rid of the UDP, and call it a day.
03-17-2009, 03:10 PM
#17
That's a good point. If electrical is the problem, you could always overdrive JUST the alt. pulley and still have some use of the UDP.
03-17-2009, 03:18 PM
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UDPs run everything on the belt slower, by definition, causing less "drag" on the crankshaft. Your PS, water pump, alternator, & AC will NOT operate at their peak RPM.
So as a result, you're putting more strain on your accessories at low RPM, but getting more horsepower.
So as a result, you're putting more strain on your accessories at low RPM, but getting more horsepower.
03-17-2009, 05:15 PM
#20
master pro platinum has a part number for the alternator on a police package camaro. it's a 130 amp if i am not mistaken. thats what i would use with an underdrive. but......you'll need to find a bunch more **** to put on your car with all that amperage!