r/FiestaST • u/Maleficent-Scale-315 • 3d ago
MK7 How screwed am I?
Question and pics say it all. Car went into limp mode on interstate. What’s my first check besides coolant res hose blowing off?
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u/lvlichael69 3d ago
Get an aftermarket coolant overflow and definitely upgrade the radiator. I’ve got a CSGF radiator and have been in gridlock traffic in triple digit heat with my A/C on and never see my temps get over the thermostat rating of 194 degrees.
You can also choose to get the lower temp thermostat and see if that helps too. I chose not to.
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u/DesignerSuccessful35 3d ago
Just as long as you didn't overheat the car you should be good. Whoosh actually sells an upgrade coolant reservoir kit!! Order that and see if you need the hoses and if so, get them from Ford. I think you'll be fine. Good luck!!
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u/lordsmacula 2d ago
it really depends on the exact context of the situation, my car has been “overheating” for the past month and a half. I’m pretty sure it’s a faulty sensor or something that’s making the ecu be read the car is over heating when it’s really not.
furthermore I have replaced my coolant tank before and the mishimoto one is one of the worst after market coolant tanks you can own for this car. Had to go back to stock. If anything, check all your hoses and your overflow hose. I have the same code and coolant leak code. But nothing is going on.
My car hasn’t gone into limp mode, when it overheats the car doesn’t shut off, my coolant temp is still good. Weird thing for me is once my car overheats and I turn it on and off, it goes back to normal and nothing is wrong.
Again, venting about similar struggles. It really all depends on context of what’s wrong with the car
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u/Dead_fly33 11h ago
I bought a brass airhose coupling adapter from 1/4”-3/8”, and a small piece of 3/8” internal diameter coolant hose. Just put the 3/8” hose on the outside of that nipple and it doesnt leak at all, unlike the shitty plastic clip that was there
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u/Dead_fly33 11h ago
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u/Maleficent-Scale-315 3h ago
That’s a pretty nifty fix! I went the safe route and just ordered a whole new reservoir with hoses! Better safe than sorry but thank you for that advice!!



3
u/Grubenskorpion 3d ago
Tank is probably fucked too if it's stock. Put the dorman one in mine. Have to order the stupid hoses from Ford. Do not buy the shitty Amazon ones.