There should be no reason to change it, unless you change out your thermostat I suppose. Besides the fixed sensor is at least $10.00 cheaper, and simpler to install and use (see Murphy's Law)

 

I am still dying to see this on a 3rd gen truck.
First one to get it installed plz take some nice pics for us!

 

I need to flush the coolant system anyway, so I might as well do it all. I'm going to get all the parts together and try it on my 3rd gen. I will take a zillion pics when I do it.

Dan

 

Me too! I've got to get all the parts together too, and then I'll post all sorts of pictures too.

Chris

 

chris,

awesome, you are 2 weeks ahead of me. let me know how it goes!!

Dan

 

Tempting. I might have to do this even though my mechanical abilities are at bearly seeing above ground.

I don't have any problems with my temp when running. Unless I stop at a light for a long lenght of time, then it starts climbing, but once I get going, it goes down again. However, I do have problems everytime I start my engine after a drive. That temp needle climbs up to three-quarters!!

 

That only will be true if I can find the time to do it. We'll see!

Chris

 

You guys can do it. It is really not that bad. Once you have all of the parts in front of you, it can be a bit overwhelming, but once it starts to come together, you'll see it is not really bad at all. For the 3rd Gen 4Runners/4th Gen pickups, the fan is a bit narrow for the 3.4L radiator. You will have a couple of inches all around the radiator. No problem though, it will still work. Besides as these radiators are thinner, there will be more clearance between the fan and the water pump pulley. Good luck!

 

I went to junkyard today, but I could determine two things:

1) Whether the engine was a 3.8 liter V6 or not
2) How the two wires coming out of the fan consists of a high and low speed wiring configuration.

Anyone know if there should be more than two wires coming out of the motor, which owuld make sense to me.

Chris

 

Dude, you need to look at the engines. The 2 speed has the following wires on the connector:

Black~ground
Brown/orange~low speed +12V
Blue~high speed +12V

Make sure to get the whole harness including the 2 circuit breakers.

 

Dude, thanks again!

Chris

 

Have we confirmed that the fan is found on 3.0L and 3.8L Taurus (or mercury) engines or just the 3.8L ones?

I want to know what to look for in the bone yard.

 

If everything goes as planned, I'm picking mine up tomorrow morning. From my understanding it's just the 3.8 liter, because I found one today that wasn't the 3.8 liter V6, and it didn't have the high and low wires.

Chris

 

seafarinman


do you have a brand and part number for the new fixed sensor you are using?

 

The brand/part number for the "fan controller" is:

-Hayden part # 3647 (adjustable 160*-210*~I have cooked 2 of these- I don't recommend these!!) This is the one with the relay and potentiometer potted into the harness block. Around $40-$45

-Hayden part # 3652 (Preset model~various preset temp settings) This has the relay and temp sensor that are designed separately. Around $20-$30

-Hayden part # 3653 (old style adjustable temp sensor~has a separate mounted sensor and variable resistor) Around $29-$35

Hope that this helps.

 

Do you remember what size these nuts are?

 

A question:

Instead of grinding down the water pump studs and putting nuts/washers on, why don't you use vise-grips, and remove the studs from the water pump, and replace them with short bolts that screw in?

I like this mod, and plan on doing it, but I'm about 5 mods behind on my list of things to do, so I'm putting it off for awhile...

 

I've got the fan, and I'm looking to do this mod pretty soon, but I've also got to put the S/C on, fuel injectors, spark plugs, wires, fuel pump, bumpers, etc, so we'll see what happens.

I like the ides of taking the studs out and replacing them with bolts that screw in. Is this possible?

Chris

 

I don't see why not. Whenever I've replaced Toyota water pumps, I've had to remove the studs from the old one to install on the new one. You'll probably just have to go to Lowes or NAPA and find what the thread pitch is, and find some bolts. I'm guessing about a half inch would work with room for the lock washer, flat washer, and the pulley.

 

Should be very easy to match up with the correct bolt length and thread pitch

I am waiting to see how it comes out so definately want to see pics when ya finish.