• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Fiesta ST Forum and Fiesta ST community dedicated to Fiesta ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Fiesta ST Forum today!


2015 Fiesta st overheating whIle running autox

Messages
12
Likes
1
Location
baton rouge
#1
So this is my 3rd event with my fist it has a little more than 9k on it. I had a small problem with it overheating last month when I was letting someone else drive the vehicle. Today was bad, the outside temp was reading 105 degrees. I did 5 runs total, by the 3rd run with breaks the car was getting hot at the end of the run but quickly came back down to operating temp after I slowed down.it did the same for the 4th and 5th. After that was fun runs, it had about an hour to cool, a friend did a run then came back and let another friend drive after waiting on grid. The car went into safe mode after about his first hard turn he stopped the run and brought it in. The temp dropped back down very quickly. I decided after a while to attempt another run and made sure not to sit behind any cars waiting to start. I did the run, by the end it was almost all the way in hot again. What are some suggestions yall can make to keep the car cool for future events? I'd love to upgrade the cooling system but the doesn't seem to be much out there for that area of the car. I've read about the mishimotos and 2j racing bolt in, but can't find them for sale. This is a issue I need to adress for me to feel comfortable running the car. Any help is appreciated. I added a picture from last week from our wet autox car is a blast in the rain.
 


Attachments

me32

1000 Post Club
Messages
1,829
Likes
264
Location
fairfield
#2
Well at 105F Driving cars hard are gonna have these issues. Some of the vendors are working on bigger radiators to help with this issue. Also running higher octane fuel could also help such as 100 octane. Do you currently have any mods to the car?
 


OP
N
Messages
12
Likes
1
Location
baton rouge
Thread Starter #3
I'm running 93 octane now. And no there aren't any mods is completely stock. I understand it's hot but down here it stays like that for quite a while.
 


me32

1000 Post Club
Messages
1,829
Likes
264
Location
fairfield
#4
I'm running 93 octane now. And no there aren't any mods is completely stock. I understand it's hot but down here it stays like that for quite a while.
Try adding a better intercooler. I thought one of the vendors already made a race radiator. You could search for it.
 


CanadianGuy

4000 Post Club
Messages
4,097
Likes
942
Location
Southern Ontario
#5
If engine coolant heat. Windows open and select heat on the climate control with the fan on max. You overheat as the car does [cool] . Again if coolant I had success in a few trucks (low speed high RPM) simply changing the coolant to something more efficient. There are quite a few available and the fluids simply help transfer the heat better.

Likely it sounds more like turbo air temp. Best is getting a bigger FMIC. Also you can try to open the air box to suck cool air in. http://www.fiestastforum.com/forum/threads/4469-Free-Intake-Mod-as-per-Mod-Bargains
 


Chuckable

Active member
Messages
559
Likes
90
Location
South Florida
#6
The only long-term solution is to wait for Mishimoto to finish their radiator, or if you can't wait, then order one from 2J Racing.
 


BlueBomber

1000 Post Club
Messages
1,086
Likes
118
Location
Anaheim
#7
I have a large Cobb FMIC and I ran into the same issue. Waiting for Mishimoto to release their radiator so the car can AutoX. it can canyon carve fine but for autox duty the stock radiator can't cope on a warm day.
 


Messages
384
Likes
135
Location
Calgary
#8
Any changes to the radiator or intercooler are going to knock you out of HS

Standard procedure for cars that overheat at our events is just to pop the hood as soon as you get back from a run. If you have 2 drivers, see if you can split your run groups so it isn't running twice as much. Don't run the AC, just turn off the climate control all together and pop your windows instead. I would encourage you to consider a radiator system flush and putting in premium fluids too... I know your car only has 9K, but in my own experience, fresh fluid has always helped with overheating issues.

Really there is not much more you can do without jeopardizing your PAX.

I've run my car in +100 temps, so far I've been lucky with not even a hint of issues with overheating aside from IC heat soak.
 


OP
N
Messages
12
Likes
1
Location
baton rouge
Thread Starter #9
Looks like the fix for now is to switch to premium coolant with a 40/60 mixture. Then I'll add water wetter. Along cutting a hole for the inlet for the air intake to take in cooler air. If that doesn't work the next step will probably be drilling holes on the crash bar, or just cutting it to allow for more air to flow over the radiator. Does anyone else have suggestions?
 


Sourskittle

4000 Post Club
Messages
4,567
Likes
860
Location
Lakeland
#10
Cutting the crash bar out could have an impact on structural integrity. So maybe cut a piece of it out or cut holes in it. But removing it entirely may not be a good idea. I was more than happy to remove the crash bar from my srt4, but on this car it ties into the rad support and all kinds of things :(
 


OP
N
Messages
12
Likes
1
Location
baton rouge
Thread Starter #11
Yeah that's what I meant was just the portion that covers the radiator. I know dead hook does the tubular crash bar that would give even more air flow and uses the large ic but I dont want the larger ic because that will bump me out of my class I'm autox.
 


Sourskittle

4000 Post Club
Messages
4,567
Likes
860
Location
Lakeland
#12
Just didn't want you to go through the trouble of removing the bumper to be supprised with how much it supports :)
 


CanadianGuy

4000 Post Club
Messages
4,097
Likes
942
Location
Southern Ontario
#13
Just get the bar only. Pm Russ im sure he can work something out. You may also want to look at the fan shroud of the rad. It has flaps for ehen the car is moving air throught the rad. Maybe removing them would help low speed heat/air flow. Larger oil filter could help and lastly what about a water sprinkler spraying water on the rad or intercooler. Cold use the windsheild washer tanks and pump for track days and use the washer controls for a nice clean set up(especially using the rear pump)
 


Messages
5
Likes
0
Location
Savage
#14
Try the Redline Water Wetter with the stock coolant first, this stuff works pretty well. As suggested above, open the hood after a run, open windows, climate control off (or full heat to help dissipate a little more heat).
 


Sourskittle

4000 Post Club
Messages
4,567
Likes
860
Location
Lakeland
#15
I know for a proven fact that running the defroster, even on low, will help with coolant temps. Its an old trick for those of us that grew up with parents that didn't know what "new car warranty" meant. And it does work on the fist. Of course the higher you turn your defroster fan, the better it works. Of course.... If its 105 degrees outside, lol, its not going to be pleasant in the car...
 


pelotonracer2

1000 Post Club
Messages
1,437
Likes
314
Location
NRH
#16
Any changes to the radiator or intercooler are going to knock you out of HS

Standard procedure for cars that overheat at our events is just to pop the hood as soon as you get back from a run. If you have 2 drivers, see if you can split your run groups so it isn't running twice as much. Don't run the AC, just turn off the climate control all together and pop your windows instead. I would encourage you to consider a radiator system flush and putting in premium fluids too... I know your car only has 9K, but in my own experience, fresh fluid has always helped with overheating issues.

Really there is not much more you can do without jeopardizing your PAX.

I've run my car in +100 temps, so far I've been lucky with not even a hint of issues with overheating aside from IC heat soak.
Something else that can help is to hose the radiator down between runs. Water Wetter also helps but I'd use two bottles, not just one.
 


Messages
384
Likes
135
Location
Calgary
#17
Something else that can help is to hose the radiator down between runs. Water Wetter also helps but I'd use two bottles, not just one.
I've been tempted to spray my intercooler as well... however I worry what a thermal shock might do, maybe crack?
 


OP
N
Messages
12
Likes
1
Location
baton rouge
Thread Starter #18
I see a lot of people spraying intercoolers and radiators after runs and seems to work for them pretty well.
 


Messages
316
Likes
84
Location
AncaSTer, Ontario
#19
I know for a proven fact that running the defroster, even on low, will help with coolant temps. Its an old trick for those of us that grew up with parents that didn't know what "new car warranty" meant. And it does work on the fist. Of course the higher you turn your defroster fan, the better it works. Of course.... If its 105 degrees outside, lol, its not going to be pleasant in the car...
Turning on "Defroster" will engage your air conditioner (for it's dehumidifying effect); think you want to stay away from that.
 


Similar threads

Ford Community Posts



Top