It might be wired backwards. It should not be pushing towards the front at all

 

I swapped the wires, mine are actually off a Ford Freestar, same thing, the fans look identical. But the blades are definitely turned to push air on one of them. I have just never heard anyone say anything about it before.

 

https://www.rockauto.com/en/catalog/...+assembly,2181

The blades look just like these, which makes one a puller and one a pusher. The blade angle would be very ineffective at pulling air, as it would not be able to "grab" the air.

 

hi speed low speed? i use ford focus fans that are like that

 

These are single speed fans. Just need verification that I'm not crazy, as all the post I've read have never mentioned this.

 

I looked at the Rock Auto pics and they both look the same to me. No way Ford would design the fan to pull air with one and push it with the other.....

 

 

Did you look at the link he posted? Don't see how one fan could go on the front???

 

yeah that looks just like my fan. the different blade pitch is for hi/low controlled by a thermostatic switch. I just have em both hot. I'll grab a pic brb.

 

crappy pic, sorry. it's hard to get in there around the turbo pipes.

but I'm reasonably sure thats a similar design. If you do use it, run 10awg and two relays...these things draw serious current.

I was planning to switch to a pwm fan set up but these fans work so damn good I'll probably let it ride a year longer

 

I had the polarity wrong, even though I thought I had swapped the wires, I must have only swapped one of the fans wiring. I could clearly see when I powered up one of the fans it was spinning backwards and not "grabbing" air like it was intended for. These fans do spin towards each other, which is why the blade angle is different on each one. one spins counter clockwise, the other clockwise. They are now both pulling air.

I used the Volvo fan relay set up, with all the original 10 gauge wiring, along with the factory pigtails and 10 gauge wiring going to the fans, and a 40 amp breaker.

 

All's well. That's a breath of fresh air. Pulled fresh air.

 

From what an engineer friend told me they are different sizes and spin that way to minimize the noise compared to what identical fans spinning the same direction would make. Having had them myself I'd suggest either using a DCC PWM module on them or going with something like a Flex A Lite 295, since as you already know they are power hogs. They work as-is, but it's less than ideal.