Overheating after unplugging radiator hose

[SuperPete]

So 27K miles 2014 SHO
Everything was find and dandy, my low speed fan was squeaking for some time, so I got replacement fan assembly and replaced just now, easy swap.
I had to remove intake box and unplug upped radiator hose, some of the coolant came out, maybe cup.
Everything got assembled back after I started the car I did not see that I had to add coolant, it was still on the line, so I took if for a drive, fans run nice, both of them bt now car overheats, like overheats at load, once I idle it cools down to normal operating temp, fans run.
Any ideas? maybe air pocket?

 

[luigisho]

Air pocket best guess given the info.

 

[Kevin81]

Did you burp the radiator?

 

[SuperPete]

I did not, how do you do that?

 

[yaycandy]

Probably air in the system. Its a little harder to burp this platform then just leaving the cap off and adding at idle. I had to get a coolant air bleed kit to do it correctly. Next time it shows it running hot, turn the heat on full blast and see if its actually hot.

 

[SuperPete]

I watched few vids, turned heat on and it's running hot inside.

 

[Zpak]

There is a Makuloco vid about how to do it. Worked for my wife’s old escape. Same thing, did a hose and then was air locked and overheating. I forget the exact procedure but it’s something like hold it at 2200 RPM’s a bunch of times for maybe 30-40 seconds while the cap is off to finally get it to burp.

 

[SuperPete]

I did that 3 sets of 3 times just like he explains and nothing took it for a ride and it's climbing up to 230 before I had to just pull over and let it rest.

Crazy.

All I did is unplugged that hose and replaced the fans, that was it, what the heck.
I am thinking to maybe drain whole system and refill it again.

 

[Kevin81]

Check the t stat? Could be stuck.

 

[luigisho]

What a PITA. Isn't the reservior/overflow tank supposed to be for self burping the system?

 

[SuperPete]

I pulled the thermostat out and it looks great, it's the geared one and only 8K miles old.
I probably should boil it and see if it opens, right?

 

[Kevin81]

I pulled the thermostat out and it looks great, it's the geared one and only 8K miles old.
I probably should boil it and see if it opens, right?

Correct. It could be stuck.

Though, I think all new T stats are "fail safe".

Nope. You've got a bit of a mystery here. And the fans Definately work? They kick on at idle once the car is warm?

 

[SuperPete]

Fans run full speed both of them as car gets to 190, blasting high.
Tomorrow I will pill thermostat out again, boil to see if it opens
then drain radiator and refill, how that fixes
Keep you updated

 

[SuperPete]

Ok got it figured out,
All of YO better sit down, you would not believe this.

This is the fans I ordered:
https://www.carparts.com/details/Fo...ssembly/2014/SHO/6_Cyl_3-dot-5L/RB621564.html

Plug and play right, not too fast, fans are spinning backwards, wires in the plug swapped.
After I checked thermostat, drains all coolant and refilled it.
WHAT?

Anyway, problem solved but ohh boy....

 

[luigisho]

Glad you figured that out. That's a huge issue.

 

[SM105K]

Ok got it figured out,
All of YO better sit down, you would not believe this.

This is the fans I ordered:
https://www.carparts.com/details/Fo...ssembly/2014/SHO/6_Cyl_3-dot-5L/RB621564.html

Plug and play right, not too fast, fans are spinning backwards, wires in the plug swapped.
After I checked thermostat, drains all coolant and refilled it.
WHAT?

Anyway, problem solved but ohh boy....

Nice catch Pete.

 

[SuperPete]

Would be a nice catch if I cut it earlier and not waisted my Saturday and part of Sunday dealing with it.

I sent nice e-mail to autocrats.com see what comes out of this.

Now my concern is this, when I cut my first overheat I don't know how far it went and how long I was in the hot zone and all that.
I did not really watch gauge that close when I was first driving, well for first 5 min temps was normal so I was just driving and driving hard.

I am kind of concern how far it got.

 

[luigisho]

change your oil

 

[SuperPete]

change your oil

Good Idea, thanks!

 

[SuperPete]

this is why fan was squeaking when running, screechy noise.