Electric Fan Problem

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September 10, 200917 yr

Hello i have a Ke-30 with stock alternator! i recently put an electric fan out of a ford fiesta XR2! but after a few days my buttery died! is it possible the alternator to be to small and can't charge the buttery when lights and fan are on? do you have any solution? thank you!!

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September 10, 200917 yr

Hello i have a Ke-30 with stock alternator! i recently put an electric fan out of a ford fiesta XR2! but after a few days my buttery died! is it possible the alternator to be to small and can't charge the buttery when lights and fan are on? do you have any solution? thank you!!

yasou re ti kanis, check your charging voltages by putting a multimeter on the battery + and - and test in the following order

1. get a mate to crank the engine while you checking the voltage of the battery (the voltage shouldnt drop less than 10-9 volts)

2. with the engine running and minium car electrics on (should be 13.8 to 14.2)

3. with full load on the battery (everything electrical on, heater fan/dimister/highbeams/stereo/wipers etc etc and thermo fan if engine is at operating temp) it should around 13.3/12.8, if you read less that 12V your battery will go flat

the output of the alternator is around 40amps for a ke30 (thermo fans use about 30 amps?)

make sure you used the right relay normally closed instead of a normally open. a normally open relay will make the thermo fan stay on therefore draining your battery!

oh another thing to test.

1. remove the battery - lead and place the multimeter + on the battery lead and the muiltmeter - on the battery - pole

2. if you get anything more than .5v that means theres something draining your battery overnight

hope this helped

ade ya