Electric Fan Install

[Unofficial]

I've been waiting for the weather to get nice to take my clutch fan out and put in my electric fan. I have an install kit for it, and I'm just trying to figure out where I can put the thermostat for it. I obviously can't use my coolant temp sensor for a spot, and the only other spot is my on the driver side head where my temperature gauge gets it's reading from. I was thinking I could put it on the water pump where that plug is on the top? Would that be a problem? I don't see why, I just thought I should ask.

Here's what I mean:

[HAULIN IT]

There isn't any reason you couldn't put it there, however that isn't the hottest area of the engine so depending on if you have an adjustable set-up or not, you may need to play with the settings to find the best on-off. Many fan controllers use a radiator probe (I do prefer the bolt-in deal though), however they are in the UPPER hose, which is "more correct" in terms of the actual temperature of the coolant. What I guess I'm trying to say is...you may need to "fool" the fan to come on early compared to what a gauge may say & leave it on longer to maintain a good temperature. If your cooling system is overkill for your engine heat...none of this will be a problem. I would either look on the intake (most have at least one port) or maybe install a thermostat housing with a fitting in it. My Two cents, Lorne     

[Unofficial]

I looked on the intake, and saw two places, but they were right in front of the TBI, so I didn't think it was a place where water was in the intake. I'm pretty sure my kit is set for the fan to maintain 195 degrees. I have a larger radiator, so I never have any cooling problems. Will I be okay, or should I put the thermostat elsewhere?

[VileZambonie]

You can get an adjustable relay controlled fan switch with the radiator probe from autozone for $30 bucks. You won't need to screw in a switch anywhere.

[Unofficial]

Well, I'm not going to just throw out this install kit. I prefer the screw in thermostat over the probe anyway. What about this? Could I take out my temp sender and put in the fan control thermostat and then just splice my temperature wire to the fan control wire? Just a thought, I'm FAR from an experienced electrician 

[HAULIN IT]

No, That you can't do. The other head will have a hole also...the heads are the same, so it will be behind the center ports, the plug may be hard to remove, though. With a 195* constant switch, my thought is your engine (gauge in the head) is going to really be 205* or so, kinda going the wrong way. For all it takes to put it in the waterpump, try it out, but you may need/want "Plan B". Good Luck, Lorne

[Unofficial]

No, That you can't do. The other head will have a hole also...the heads are the same, so it will be behind the center ports, the plug may be hard to remove, though. With a 195* constant switch, my thought is your engine (gauge in the head) is going to really be 205* or so, kinda going the wrong way. For all it takes to put it in the waterpump, try it out, but you may need/want "Plan B". Good Luck, Lorne

Ok, so will I get a more accurate reading from the water in the head than the water pump? And if I can't get the plug out of the head, just do the water pump anyway?

[HAULIN IT]

Yes, Try that

[gold84gmc]

i put an electric fan on mine...and instead of putting a coolant temp sensor i just put a toggle switch so i can turn it on and off when i want...and unless im in traffic in the city then i dont need it

[Unofficial]

Ok, hopefully something is wrong with the relay or the thermostat or something, rather than the fan. It never turned on, and it started to boil over. Since I'm new to all this, could someone tell me how to rig up a switch for it? I don't know where I would start. The fan motor has two wires with terminals coming out, and that's it. How could I test to see if the fan even works? Thanks for any help, I just worked on it for a couple hours and nothing even worked 

[VileZambonie]

Where did you put your temperature switch? On the waterpump is the bypass circuit. Your best bet is in the radiator like I said but since you don't want to go that way you need to tell us how you wired it up? Are you using a temp switch that grounds the relay to energize the fan?

[Unofficial]

Where did you put your temperature switch? On the waterpump is the bypass circuit. Your best bet is in the radiator like I said but since you don't want to go that way you need to tell us how you wired it up? Are you using a temp switch that grounds the relay to energize the fan?

I put the temperature switch in the water pump, and hooked a battery positive wire up to where the positive battery cable goes to the alternator. I put the positive ignition switch in the same spot, so that even when my truck is off, it will cool it if necessary. Then the ground wire, and since I don't have AC, the AC clutch wire isn't hooked up. There were two wires for the wires coming off the fan. Am I supposed to ground the black wire from the fan?

[VileZambonie]

Woah, You're doing it all wrong. No relay? No circuit protection? Did you see the schematic I drew up for it?

[VileZambonie]

Try this

[Unofficial]

No, it came with a relay with a fuse, that's what I used. It said on the relay where to hook up each wire.

Red- Battery Positive
Yellow- Ignition Positive
Black- Ground
Blue- Fan Positive 1
Orange- Fan Positive 2 (this wire has a fuse in it.)
Green- AC clutch (not used)

 Sorry, it's hard to be clear when I don't know much about this stuff.