BOTH radiator fans don't work on low speed.

[sobefun]

Hello,

It seems that neither of my radiator fans will operate at low speed, even when the temperature climbs up to 180. They DO activate though at HIGH speed when I am using the AC (they cycle on and off at this point) or when the engine temp gets above 180.

I've swapped the relays between the high and low positions, with no effect.

Does anyone have any idea as to what could be causing this issue?

My Boxster is a US 2002 with 45k.

Thanks,

Kevin

[juniinc]

u could check the resistors but

sounds normal to me.

Edited August 18, 2008 by juniinc

[rsfeller]

Hello,

It seems that neither of my radiator fans will operate at low speed, even when the temperature climbs up to 180. They DO activate though at HIGH speed when I am using the AC (they cycle on and off at this point) or when the engine temp gets above 180.

I've swapped the relays between the high and low positions, with no effect.

Does anyone have any idea as to what could be causing this issue?

My Boxster is a US 2002 with 45k.

Thanks,

Kevin

I does sound normal in one sense but after a daily drive in Miami I would think you would here the one coming on. If you temp does not change (when up to temp) or go over 185-190F then you don't have an issue and it may very well be coming on w/o you noticing.

In Miami w/o the fan on your would soon be running very hot.

If you don't have the Durametric software buy it. It will tell you your running temp and I believe the new version tell you if the fans are firing up.

[Chris_in_NH]

have you checked the fuses?

i would start the car and let it idle until the fans come on (stand/sit in front of car and wait for them to turn on). note the coolant temp and the approximate amount of time it took for the fans to turn on.

[sobefun]

Does anyone know at what temperature the fans should activate for the low speed setting?

My Bentley manual says the following:

Low speed operation with coolant temperature above 96.75 Celsius (206.2F) or A/C switched ON.

Now here's the ignorant question.. Is the gauge in the US market cars in Celsius or Fahrenheit?

btw, I did check the fuses and all is good.

[juniinc]

Fahrenheit

Does anyone know at what temperature the fans should activate for the low speed setting?

My Bentley manual says the following:

Low speed operation with coolant temperature above 96.75 Celsius (206.2F) or A/C switched ON.

Now here's the ignorant question.. Is the gauge in the US market cars in Celsius or Fahrenheit?

btw, I did check the fuses and all is good.

[PTEC]

Chances are both of your fan resistors are toast. If the fans are working on any speed, the fuses are good. If you've swapped the high and low speed relays, then the relays are fine. The only thing left in the equation is the resistors. The good news is you can buy them seperately from the entire fan and they're easy to change.