both of my fans are inop with the car on and a/c on but the cooling fan will work with the car off. I have checked alldata and from what i figure my problem is the condenser fan diode? can anyone help?

 

begin ruling things out untill you find the root issue. (troubleshoot, no guessing)

run 12v to the fan motor for each fan (with test leads) to confirm both work. [you said rad fan runs under certain conditions so you only need to test condensor fan]

if fans are good, check wires. check all connectors for loose or corroded pins. double check fuses. check thermoswitch: jump the connector at the thermo switch (w/ key on, engine off.) if fans run, bad thermoswitch.

there may be a few more things to check, but this should be a good start.

 

i just tested the diode and got continuity in only one direction so it should be good. i supose ill just start testing stuff.

 

maybe a relay

 

have you checked the 2 fan switches that turn the fans on and off?

 

i am going to do that i replaced the one on the outlet i will check them both but the one on the thermostat housing is hard for me to get off, but that would only be for the cooling fan

 

i tested the condenser fan relay connector for power and ground on both sides and both were good so im pretty certain that is one fan problem down. on coolant temp switch A on thermostat housing both pins were grounded where one should have 6V power but when i check power i get 1V so i havent quite figured it out yet, but it seems like high resistance in the power wire, i get no continuity to ground on the pin so i don't believe its a short, but when i test voltage from positive terminal to both pins i get battery voltage.

 

fix it yet?

 

yep fixed both condenser was the relay and cooling fan was a bad timer module.

 

is the timer under the dash by the dash fuse box? how much did you spend for parts?

 

yeah its under dash 15 from junkyard

 

got lucky then i was thinking of doing the same. not all the time it works though. thanks

 

well the junk yard where i live guarentees that it works or you can take it back