Leaking/smoking radiator

[TJ1978]

Here is the melted one
Today I put the red with red, yellow to temp sensor on fan, blue to fire wall. All I have left on the new is White and Black. I think the White goes to red wire that goes to the firewall relay...

If black is ground do I disconnect the blue from the firewall and leave that open and put the black one there?

Or can the black wire stay unconnected and blue be the ground m?

 

[JoshHefnerX]

ok the colors are kind of inconsequential sorta. The diagram posted w/ the terminal numbers is what's important. The relay is a big switch, it uses a small current to switch on a big current using an electromagnet.

So, 85 and 86 are your small current switch. one side goes to the thermo sensor you're poking into the rad. Most of the times those are ground resistance so the opposite side needs to go to probably a key switched positive. When the thermo sensor grounds (hits temp) it completes the circuit and the magnet turns on.

If you look at the schematic that says coil on it that coil is literally the electromagnet - and pulls the actual switch contact over from 87a to 87. So you want 87 and 30 to go to your batt and fan. kinda doesnt really matter which. So long as there's a fuse next to the battery. So battery => fuse => 30 => 87 => fan

The colors are there to help you keep track of what you're doing but the relay only goes in to the socket 1 way, so you need to match up the numbers on the relay blades to the colors - you can label the wires to keep it straight.

 

[TJ1978]

ok the colors are kind of inconsequential sorta. The diagram posted w/ the terminal numbers is what's important. The relay is a big switch, it uses a small current to switch on a big current using an electromagnet.

So, 85 and 86 are your small current switch. one side goes to the thermo sensor you're poking into the rad. Most of the times those are ground resistance so the opposite side needs to go to probably a key switched positive. When the thermo sensor grounds (hits temp) it completes the circuit and the magnet turns on.

If you look at the schematic that says coil on it that coil is literally the electromagnet - and pulls the actual switch contact over from 87a to 87. So you want 87 and 30 to go to your batt and fan. kinda doesnt really matter which. So long as there's a fuse next to the battery. So battery => fuse => 30 => 87 => fan

The colors are there to help you keep track of what you're doing but the relay only goes in to the socket 1 way, so you need to match up the numbers on the relay blades to the colors - you can label the wires to keep it straight.

I appreciate the detailed response. I'll try my best tomorrow. I know it makes sense to all you guys but for me, I'm reading Chinese.

What will be the tell I wired it wrong?

 

[JoshHefnerX]

LOL, the tell is it wont work, or the magic smoke will come out.

Where abouts in the 'east valley' are you? My day is kinda up in the air - have a/c guy potentially coming over for quote but if you're not out in east gilbert or AJ I might be able to make my way over...

 

[Wes Harden]

take the yellow wire in the middle out you can depin it from that socket. there is a small tab on the terminal you need a small pick or tiny screw driver (jewelers) to bend the tab and release the terminal. you can do it to any of them and move them to where you want them. If you so desire.




labeled for your convenience

 

[TJ1978]

LOL, the tell is it wont work, or the magic smoke will come out.

Where abouts in the 'east valley' are you? My day is kinda up in the air - have a/c guy potentially coming over for quote but if you're not out in east gilbert or AJ I might be able to make my way over...

I'm literally in Gilbert hahaha. Like Pecos and Higley area by Higley high school...ha...

 

[JoshHefnerX]

Yeah, you're a ways out there from me - I'm near the Cardinal stadium.. Not sure I've got the time to head out and back and still be able to help tomorrow.

 

[TJ1978]

Yeah, you're a ways out there from me - I'm near the Cardinal stadium.. Not sure I've got the time to head out and back and still be able to help tomorrow.

No worries. I appreciate the thought. I know it's a trek. That's a lot of driving for what would probably amount to 5min of work/help from you. I'll fumble through it. Good for me to learn anyway. I'm going to wire it how @Wes Harden did that diagram and post a screen shot here before firing it up.

 

[TJ1978]

How many jugs of coolant do I need to fill the 3core radiator?, like, 3 jugs. I will get premixed 50/50z

 

[Wes Harden]

going say it will be 3-4 gallons. Not a 100% on this but been of the opinion aluminum rad should get Dexcool, Organic Acid Technology (OAT) antifreeze. I think it is better suited for aluminum, and reducing electrolysis, also it is rated at 10 years and 150k miles. Normal green ethylene glycol is good for 2 years. Reminds me time to dump the 77 and refresh.

 

[TJ1978]

going say it will be 3-4 gallons. Not a 100% on this but been of the opinion aluminum rad should get Dexcool, Organic Acid Technology (OAT) antifreeze. I think it is better suited for aluminum, and reducing electrolysis, also it is rated at 10 years and 150k miles. Normal green ethylene glycol is good for 2 years. Reminds me time to dump the 77 and refresh.

Can this me mixed with the green stuff thats in the block? I really don't feel like doing flush of the block.

 

[Wes Harden]

no I would not mix, so ethylene glycol it is. If the block is reasonably full 2-3 gl

 

[TJ1978]

Ok.. I did as @Wes Harden diagram showed.

 

[Wes Harden]

only thing I didn't make clear, and was unsure about is how the temp sensor is wired. I assumed it closes to ground when I amended this diagram. Can I see the wiring for the temp switch

 

[TJ1978]

only thing I didn't make clear, and was unsure about is how the temp sensor is wired. I assumed it closes to ground when I amended this diagram. Can I see the wiring for the temp switch

 

[Wes Harden]

ok take the red ire from the temp sensor and replace that with a black wire to ground. tape up the red wire as I assume is either battery or keyed hot.

 

[TJ1978]

ok take the red ire from the temp sensor and replace that with a black wire to ground. tape up the red wire as I assume is either battery or keyed hot.

There already is a ground wire from the fans...you can kind see it running above. It went to the battery terminal

 

[Wes Harden]

wow I should have looked over your work more better. So which wire is going to fans right now. I have the Blue to Fans. The white should be on the temp sensor. I need to now what that red wire on sensor is, is 12v power?

 

[Wes Harden]

Amazon.com

since this circuit is running electric coil device you may need a diode relay, if the fans don't shut of hen relay should be opening circuit. the one linked above has a diode in circuit.

 

[TJ1978]

Amazon.com

since this circuit is running electric coil device you may need a diode relay, if the fans don't shut of hen relay should be opening circuit. the one linked above has a diode in circuit.

I'm confused... why would the fans not shut off?
I was under the assumption I was just mimicking what was already on the truck and just replacing that along with new fuse?

Im already lost as is... hahahaha. I don't get this stuff. I dropped out of electronics classes for baseball. Yes, regretful but this just goes over my head...