can I wire the high and low coolant fan relays together without a problem?

[Ted]

For the past couple of years I have had trouble getting the high speed fan to come on by itself. I have tried to diagnois but it's a pain in the rear. Can I hard wire the low speed relay and high speed relay together, so when the computer tells the fan to come on I will always get the high speed fan?

Are there any downsides as in the fan running to long or, whatever?

Thanks......

 

[Ormand]

Maybe??

The low speed relay provides voltage to one side of a dropping resistor. If you put a jumper across that resistor, you will accomplish what you want, I think. And if you don't like it, you can just take it off again. The resistor is right at the fan.
Hope that helps.

 

[THE CROW]

2 easy ways to do it. 1) jumper across the large white resistor at the fan. Or what I did 2) toss the resistor and splice the low and high speed wires together and run it to the positive post on the fan.