Hi,

I own a 92 Camaro RS with 305 TBI. The car had a single cooling fan setup and I'm upgrading it to dual fan setup (Got used from a salvaged Z-28). Is there a HEAVY DUTY relay that I can buy so I can run both fans on one relay therefore eliminating the need to splice / solder new wires?

Any help is appreciated!

 

i would just do what the stock setup does and you two separate ones so if one went bad for some reason you still would have some sort of cooling.

 

You can use a single relay if you want, but it must be capable of at least 50 amps peak current. Tyco makes some pretty heavy duty ones, I switched both my fan relays to the tyco mini series. It was some work as I had to replace the connectors but I now have both relays mounted in the same place as was my primary cooling relay. They make stackable sockets that snap together. Best place to try would be a truck repair place, they generally have them on hand.

 

So each motor draws approximately 25 amps then?

 

At startup the fan motor may draw up to 20 amps, then it settles down to around 6-10 amps running. It really depends on the fan motor itself-bearing condition etc.

 

When I first tested my electric fan after swapping it in, it blew a 25A fuse on startup. I've switched to using a 30A circuit breaker with no troubles since.

Pete

 

The fuse in my car is okay, but I already burned 2 relays. The plastic around prong 'E' was burned black and melted a little. Not to mention the smell too....

I unplugged one of the fans and it runs okay, but kinda defeat the purpose of having 2 fans. The reason I put 2 fans is because during summer, with stock single fan, the car temp gauge would almost reach 3/4 mark in traffic.

The Delco relay number is 15-8240, and GM part numer is 14089936. Anyone knows if there is an upgrade for this part?

 

The older relays suffered from an inherent design problem, after they cycled a hundred or so times the contact armature would warp causing a misalignment with the contacts when it would close generating heat sometimes to the point of overheating the socket contacts. NAPA has a redesigned relay, GM also carries it under the same part#. It can be identified by "made in China" on the top. Believe it or not it internally is entirely different and holds up much better. Never put in a relay into a socket that is burnt or has a bad contact, that will also cause premature failure.