New electric fan set-up is still not working. Here's what I have.
2 30 amp relay's mounted on core support. Both relays are feed 12v power from the battery terminal on the core support through 12 gauge wire w/fuses to #30 on the relay. Each relay then feeds the 12v to the positive wire of each fan, the fans are then grounded to the core support. I'm giving the temp switch (NAPA part# FS120SB 2 prong switch)12v through my ign. terminal on the fuse panel, then from the other prong on the temp switch I'm going to the #85 prong on the relay. Last the #86 prong across from the #85 prong is going out to a ground on the core support also. The temp switch is rated at coming on at 193 to 207, car gets to 205 and I shut it down, NO FANS! I've tried putting a screw driver on the terminals on top of the temp switch to jumper it and the fans come on like thier supposed to, but not at temp. Help, I,ve missed getting to take the car out this weekend cause of this.

The temp switch is rated at coming on at 193 to 207, car gets to 205 and I shut it down, NO FANS! I've tried putting a screw driver on the terminals on top of the temp switch to jumper it and the fans come on like thier supposed to, but not at temp. Help, I,ve missed getting to take the car out this weekend cause of this.

Temp switches are rated plus or minus 10% or so. Let it get a little hotter to see if fans come on. 205 is not that hot, I would wait to 220 or so. You might want a little lower rated temp switch.

Don't panic at 205

My 59 on occaision gets to 250 before the fans kick on
This is with a NAPA FS118 switch----SUPPOSED to come on @ 218 and of @ 205

This car seems to like to run at around 200-----I gave up trying to make it run cooler

This is my 2nd switch----must be made in China
Next switch I will get from GM-----if I can figure out the attributes of their switches

Where is the switch mounted? Mine is in the DS head. I figured it would be hotter there and the fans would come on earlier.

i'll also say to let it get a little hotter before worrying about it- 205 on your temp gauge might in reality only be 195, and your switch might be calibrated even different than that.
as long as you've got a good radiator cap, you don't have to worry about the water boiling until well past 230- which might be 240 on your gauge.

Where is your temperature sensor for the gauge located in relation to the fan control temperature sensor?
If your using a port near the thermostat and you don't already have an 1/8" or 3/16" hole drilled in the thermostat body , put one in.
Depending on your bypass, if you even have one, the hole in the stat will eliminate any air pocket and will also eliminate a condition of no flow around the stat housing as the engine warms up.. It also allows the stat to sense the coolant temp faster, rather that just sitting in a static section of the cooling system.
I'd let the temps get to at least 240 to see when it does or does not bring the fan on. If not on by 240 start it manually and cool things off. Pull the sensor and try it with a pan of 212 degree water.
Squido

I had the sensor mounted in a pipe tapped hole located in the back of the manifold next to the distributor, when I pulled the sensor yesterday there was only a few drops of coolent on the bottom of the sensor, and no coolent to be seen, could it be an air pocket back there thats not letting coolent to the sensor. Or is this just not a location to put it. I was looking for an out of site location and this seemed like the perfect spot, it is a coolent crossover, right? When I pulled the thermostat I saw coolent starting to overflow from the hole that I had had the sensor in, which leads me to believe there was an air pocket there. I've never read on the forum of anyone putting the sensor in this location, Am I way off base with this location beside the Dist.
Either way now I'm machining an aluminum spacer to go under the thermo housing to insert the sensor now.
I know I should be in the Heating and Cooling section but I'm getting answers I'm needing here also.