Urgent: at what temp. are the radiator fans supposed to kick on ??
 

Just want to make sure my fans are coming on when they are supposed to. THank you. BTW, I checked the manual and it doesn't say.

I think

95 with a/c on fan1
99 with a/c off fan1
105 fan2

personally I think a little late... :)

my stock ecu my fan come on at about 120-125c. but i alway turn the a/c when it gets up to 100c. but with my pfc it come on at 95c. and never goes to over 100.

According to service manual low speed fans come on between 221-226F this is controlled by ECU, there is a 226F thermoswitch switch that when temp is reached will turn fans on med speed,high speed fans only come on when A/C is activated.But if you install a real temp guage and put the temp sender at the thermostat housing you will see that fans actually turn on at 230F for low speed instead of between 221-226F.Which might explain all the over heating problems.

Excellent, thanks guys !! At least now I know my fans are coming on at the specified temps.

Changing fan on temp with datalogit
 

Guys, if you have the datalogit (plus a PFC of course) you could have changed your fan temp on to whatever temp you want.

My car usually runs at 210 in traffic; now it's 195F because I set the fan to come on at 95C w/o AC and 90 with AC.

The car is happy at 195-200.