2011 Fiesta SE overheating/ boiling coolant

>>15625647
Id lean faulty waterpump.
Even if its new, it can still be out of box failure

Needs a flush you fucking pleb

>>15625668
Thanks, I will try to see if I can tell if it can pump at all

>>15625675
With the motor completely cold, take off the radiator cap/coolant reservoir cap and start it. Look inside the radiator/reservoir and see if you can see fluid moving. Have you consulted the dealer?

>>15625647
>he doesn't monitor his coolant temp with a bluetooth obd2 adapter and torque pro

>>15625675
Rfound this forum post about a 2011 Fiesta ST
Apparently the plastic radiator had an improperly machined tab inside, causing poor flow.
Need a new radiator most likely.
http://www.fiestast.org/forum/fiesta-st-maintenance/1923-car-overheated-twice-2-weeks.html

Two likely possibilities

First is that the coolant does not have a sufficiently high boiling point due to poor mixture control. Second is that the cooling system cap is faulty and doesn't hold pressure on the system and allowing the coolant to boil earlier than designed.

Or both I suppose.

Drove around the block again, got accurate radiator temperature readings, at the top, passenger side, went from 190 right after parking, after a bit of idling, went to 210, and I shut it off. The reservoir filled up almost to the top.

Bottom of radiator at both corners, 107 degrees.

I believe this means the water is not flowing. SO either stuck tstat, or water pump is not pumping. What tells the W.P. to come on/ off?

Also thanks guys for the swift responses.

>>15625818
take it to the dealer.

Does the heater work?

>>15625818
see >>15625717

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funny, looking at the FiST forum and seeing the first page FILLED with all the problems MY car has, or has had.

I have a '14 OP, does your temp gauge go up?

Check your serpentine belt for wear. They like to crack badly before failing and could be slipping over the water pump pulley.

>>15628899
Has new belt. 11 don't have a temp gauge.

>>15625647
I'll say it: head gasket.

Made in Mexico

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>>15629117
>I'll say it: head gasket.
Please stop with the meme of saying "head gasket" for every problem. It's an old meme and should be retired now. Find a new meme.

>>15630918

Those are signs of a head gasket failure anon, sorry but that's what it sounds like to me too.

See if there's any smoke from the exhaust when it overheats, and change the oil, see if it looks milky or off color in anyway.
If you notice either, head gasket m8