radiator fans
Thread Starter
Instructor
Joined: May 2010
Posts: 118
Likes: 0
From: conway arkansas
radiator fans
Hello! I have a question about my cooling system. The radiator has two electrical fans but they are not wired up, they do work. When i drive the car its fine but when i get in traffic or stopped at a light it begins to over heat. My question, is there some kind of sensor i can install to turn the fans on when the car gets hot? Thanks!
Le Mans Master
Joined: Jan 2006
Posts: 9,192
Likes: 27
From: Boca Raton Florida
There is a sensor port on the passenger head, put the temp sensor there. Wire the fans with a relay to take the current, use the sensor for the ground on the relay. Jegs, painless and several vendors sell a wireing kit
Burning Brakes
Joined: Aug 2005
Posts: 1,164
Likes: 1
From: Europe, France
Some stuff like this should work :
http://www.summitracing.com/search/P...ank|Asc&page=1
But you will still need a good fan relay ( 30A or more ) if it isn't sold with the kit.
If I remember correctly, the sensor port should be threaded 1/2" NPT, but you can always use an adapter if the sensor that comes with the kit doesn't have the same thread size.
Last edited by 73StreetRace; May 16, 2010 at 08:57 AM.
Safety Car
Joined: Aug 2001
Posts: 4,883
Likes: 11
From: North Easton Mass
An easy way to deal with the sensor is to use a thermostat housing from a 79. It has 2 ports - you can fit the heater hose to one and screw the sensor into the other. The housing is less than $10.00 at the chain parts stores.
Rick B.
Rick B.
Safety Car
Joined: Mar 2007
Posts: 3,652
Likes: 49
From: Bridgewater nj
Don't use the stock sensor on the rt head. It's set for temps above 210*degrees. I used the summit thermo wiring kit. It's cheap, turns on at 180 and the sensor just needs to be touching a hot spot on the engine. I clamped mine to the thermo housing
