ELECTRIC FAN ON TOGGLE SWITCH

[jammer84_03]

look in the useful thread index under junkyard parts, the years are listed. and there are always ones in the junkyards to get em from

 

[CONCRETEWARFARE]

I know mine cools the motor very well and fast. I let the engine get a little extra hot and then flipped the fan on and watched the guage drop in about 15 seconds.

 

[87Mustang351]

did you have to upgrade to a 3 G alt?

 

[jrichker]

did you have to upgrade to a 3 G alt?

Electric fan = 3G alternator if you want long life & reliability from your car.
The electric fan saves some HP. The stock fan's parasitic drag runs from 7-12 HP depending on who you talk to. The electric fan uses about 1/2 HP of power from the electrical system.

Figure this:
Ignition system & computer = 12 amps
Fuel pump = 12 amps
Exterior lights = 15 amps
Fan (heater or A/C) = 15 amps (can run between 5-25 amps depending on setting)
Radio & instruments = 10 amps
Wipers = 10 amps

That's grand total of 74 amps from a 65 amp alternator. Talk about overdrawn at the bank!

 

[tmoss]

I would recommend a 3G also.........

 

[87Mustang351]

my car is not EFI anymore, i dont have any of the computers, i never use my wipers, and i have no A/c and rarely use my heat....does that save me on the amps or its it being drawn the entire time?

 

[Blk91stang]

You save the amps. Current is only drawn if something is allowing it to be drawn.

 

[CONCRETEWARFARE]

No I did not do the 3g upgrade. Im hoping I can get away with not doing it if possible since I have no radio and no heater or a/c.