Fuse or fuse and relay for trans cooling fan.

[cuervo]

I pick up a B&M trans cooler and fan.

http://www.bmracing.com/products/70297-oil-cooler-large-hi-tek-cooling-system-with-fan-590-cfm-rating/?query=hi tek cooling

I do not know how many amps it pulls so was wondering if I should put a relay in with it?

I'm thinking that if it needed a relay it would either come with one or the instructions would say to install one.

Thanks

 

[K30Blazer]

Throw a multimeter between it and the battery to determine your amps. Relays are never a bad thing but depending on where you are installing it and drawing power from might be overkill

 

[cuervo]

Well, it calls for a 15 amp fuse so it has to be less then that. The run from the 12v source will be less then 2 feet. I'm going to go with overkill and leave the relay out.

 

[skunked]

Are you running a temp switch or manual switch?

Also, it notes 6 amps and I would run a relay.

 

[cuervo]

I'm using the thermal switch the fan comes with. Where did you see 6 amps?

 

[Hoss7979]

God I hope you didn't pay that much for it......rip off! Yes I would run a relay to anything that's not off the fuse block. I run on my tranny fan as well.

 

[skunked]

I'm using the thermal switch the fan comes with. Where did you see 6 amps?

right on the B&M page you linked.

 

[cuervo]

I didn't even notice it -6 Amp capacity.

Yeah not running a relay for 6 amps.

 

[cuervo]

Well the thermal switch that came with the cooler isn't doing me right. Trans temp gets to over 200 before the fan kicks on. So, I'm going to add one of these to the line out right before the radiator.

https://www.summitracing.com/parts/DER-35020

I also installed the relay right next to the rad where this switch will go.

Thanks for the input. It's always appreciated.

 

[K30Blazer]

Mine is at 180 and rarely comes on. I wired an led to it so I can see when it comes on.

 

[Hoss7979]

Mine is at 180 and rarely comes on. I wired an led to it so I can see when it comes on.

Yep same here, I have a dummy light for engine temp, tranny temp, & low oil pressure. It's a lot easier to see a light come on in front of you than try & look @ a gauge...

 

[skunked]

Well the thermal switch that came with the cooler isn't doing me right. Trans temp gets to over 200 before the fan kicks on. So, I'm going to add one of these to the line out right before the radiator.

https://www.summitracing.com/parts/DER-35020

I also installed the relay right next to the rad where this switch will go.

Thanks for the input. It's always appreciated.

Not sure how you're all plumbed and where your temp sensor is however it's not uncommon to have gauge reading much different than the fan switch. I would test the switch in a pot of water with an ohm meter and a temp gauge first.

 

[Hoss7979]

Not sure how you're all plumbed and where your temp sensor is however it's not uncommon to have gauge reading much different than the fan switch. I would test the switch in a pot of water with an ohm meter and a temp gauge first.

I have my sensor & gauge plumbed in right inline right next to each other. But yes it's best to test to make sure there in the same ball part of each other.....

 

[cuervo]

The temp gauge sensor is drilled and tapped into the side of the aluminum pan. The sensor is, well, right on the fan. I may just opt to run the fan relay to a keyed hot and be done with that part of this.