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Discussion Starter #1
I have been noticing from time to time with my cooling fan that it will kick on at its regular preset temp (207-208) and go down to 199 where the fan kicks off.

But I have noticed that I can be sitting in traffic, the fan kicks on and my temps keep going down , say o 185 etc. So this happened again today but I was close to home so when I pulled into the garage I quickly popped the hood and sure enough the fan was still on ( hardly ever run the a/c so it was off)

Whats up here ?
 

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2008 GT500 Convertible
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You don’t list a Thermostat on your signature, but do you have an aftermarket one? Since you’re below stock 195 set. If stock, maybe it’s stuck open? However, fan should have turned off with a/c off.
As far as the fan, older relays can stick/short. That’s the only way (apart from a wiring short) the fan can run without ECU command. They are easy to open up and check with a screwdriver separating the halves. If you’re not comfortable, swap the hi and low fan relays and see if the high speed sticks now (assuming it was stuck in low speed) using a/c to get the temp higher while parked.
I’m looking into doing some upgrades myself because I’ve read that S197 mustangs in general have a high incidence of cooling fan issues. With the resistor on fan and the fuse box getting corroded.
 

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2012 SVTPP with a heavy dose of 2013 components
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What are you using to determine engine temperature. Are you using something that monitors the ECT sensor, or do you have an aftermarket gauge sensor? Has anyone modified your fan settings in the tune? What thermostat are you running? Mine runs in the 180-185* range, but I have a 170* thermostat and my fan settings are modified.
 

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Discussion Starter #4
What are you using to determine engine temperature. Are you using something that monitors the ECT sensor, or do you have an aftermarket gauge sensor? Has anyone modified your fan settings in the tune? What thermostat are you running? Mine runs in the 180-185* range, but I have a 170* thermostat and my fan settings are modified.
I have a nGauge monitoring ECT’s

I have a 170 thermostat
 

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Discussion Starter #5
I also have the updated 1314 Svt fan
 

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Discussion Starter #6
What are you using to determine engine temperature. Are you using something that monitors the ECT sensor, or do you have an aftermarket gauge sensor? Has anyone modified your fan settings in the tune? What thermostat are you running? Mine runs in the 180-185* range, but I have a 170* thermostat and my fan settings are modified.
My car on the open highway Will run high 170s low 180s. Around town in open traffic about the same maybe a little hotter. In traffic moving where I have people in front of me and I don’t have clean air 190s and moving slow or at a stoplight it’ll go up to 207-208 and then the fan kicks in
 

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You need someone to program your fan settings. If you have user defined parameters on your tune, you can do it yourself.
 

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Discussion Starter #8
You need someone to program your fan settings. If you have user defined parameters on your tune, you can do it yourself.
John

I've decided to get the CR radiator and have it shipped to VMP

I'll have them install it, by doing so I will get a complete flush of both the intercooler and radiator, and I will have them adjust the radiator fan while I am there

Take care of everything at one time
 

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Moderator/Admin Dude!
2020 CFTP on order 2011 Kona Blue/white
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John

I've decided to get the CR radiator and have it shipped to VMP

I'll have them install it, by doing so I will get a complete flush of both the intercooler and radiator, and I will have them adjust the radiator fan while I am there

Take care of everything at one time
Put this in each system a few days before the drain/fill. Remove some coolant first to make room.


FLUSH!
 

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Discussion Starter #10
Put this in each system a few days before the drain/fill. Remove some coolant first to make room.


FLUSH!

In other words get the system ready and get it cleaned out a few days before the new radiator goes in the FLUSH has been optimized
 
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Discussion Starter #11
Put this in each system a few days before the drain/fill. Remove some coolant first to make room.


FLUSH!
thank you tim

When does your new GT500 arrive?
 
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Moderator/Admin Dude!
2020 CFTP on order 2011 Kona Blue/white
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thank you tim

When does your new GT500 arrive?
Just got word this morning that my build date slipped a couple days to July 10th. I expect it mid to later Aug.
 

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Just got word this morning that my build date slipped a couple days to July 10th. I expect it mid to later Aug.
fantastic !!

Bet you cant wait
 
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