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Hello,

Does anyone out there know if the electric fan on my car, 300D, infront of the radiator and AC condensor should run when the AC is off? My AC is broken and I have overheating problems, should that electric fan be kicking in? I know that it never runs now, and am wonerind if it should be, when the motor heat gets to a certain temp...

Thank you for any input,

Eric
 

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fan

in my old 300d i would kick in at about 80*c, we didnt have aircon in it so it didnt matter.

in our new one, it never kicked in, so i riped it out and put the one from the old 300d.

anyway,....
we have a new ac system in our new 300d and it kicks in at about 75*c.

it dosent have to turn its self on when u turn on the ac.

heres what u do, boil some water (nice and hot...

on the left hand side (when u are looking at the car front on with the bonnet up) near where the headlights are there is a thermostat which is under some housing

turn the engine on

and the ac if u can/ want

pour the hot water on to the housing (CAREFUL NOT TO MELT ANY WIRES) the fan should start uo after a few seconds.

if it stutters or dosent work at all, give the fan a wack witha hammer to exite it.

if it starts up the fan is old and will prob die on u after a while, u can get a new one or live out the life of that one.

if it dosent start up give it a nother wack.

u can take it to any ac specialist to check they will do the same thing i said. they will also be able to change the temp at which the fan will kick in

louis
 

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Hey there loius,
I was wondering if you could be more specific on what this part looks...


Hey there loius,
I was wondering if you could be more specific on what this part looks like. I have just replaced my auxillary fan and it looks like it still does not work.
Does this thermostat look like a box with springs inside of it?

thanks in advance.

-jante
 

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troubleshooting aux fan

Hey there Ron,
I was wondering if the switch you were talking about was the switch that has one electrical lead coming off of it and is located on the passenger side of the #1 and #2 cylinders. I have jumped this lead to the positive battery resulting in the aux fan spinning. I know the fan works and I have checked the fuse. I am trying to find out if it is the temp switch mentioned here or could it be the relays on the other side of the engine? Do you know a way that I could check this temp switch and/or the relays on the drivers side?
Thanks for any help you may offer!
-jante
Austin TX
 
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