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Cool fan issues

  • Thread starter Thread starter Zipcity
  • Start date Start date Dec 23, 2025
Z

Zipcity

New Member
Dec 23, 2025
5
1
1
Florence Alabama
Dec 23, 2025
#1
  • Dec 23, 2025
  • #1
Hi everyone I’m having cooling fan issues my cooling fan will not kick on I have replaced my temperature control sensor and I have checked off fuses but when I unplugged the temperature control sensor the fan kick on so I know my fan is working I think that my CCRM may be bad could anyone else give me any ideas??
 

AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
5,782
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Claremore, OK
Dec 23, 2025
#2
  • Dec 23, 2025
  • #2
Just gonna put this out there. Can you use punctuation so I don’t run out of breath reading that run on paragraph?

It would also be nice if we knew the year, what motor, trans, and if any modifications have been done.
 
Reactions: DadLife0724
Z

Zipcity

New Member
Dec 23, 2025
5
1
1
Florence Alabama
Dec 23, 2025
#3
  • Dec 23, 2025
  • #3
My bad, I didn’t realise it was like that.

It is a 94 gt with a 5.0 and 5speed trans. I have had to add a aftermarket temp gauge; due to the fact that the one in the in instrument cluster wasn’t working.
 
Z

Zipcity

New Member
Dec 23, 2025
5
1
1
Florence Alabama
Dec 23, 2025
#4
  • Dec 23, 2025
  • #4
And the A/C does not work
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
42,890
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Box behind Walmart
Dec 23, 2025
#5
  • Dec 23, 2025
  • #5
Let's start at the very top then...


Pull codes.
 
Reactions: Shakerhood

gkomo

now i can hopefully expect to receive the shaft
Aug 2, 2024
2,121
1,365
133
San Diego, CA
Dec 23, 2025
#6
  • Dec 23, 2025
  • #6
How’s the wiring look to your aftermarket sensor? No shorts or frayed wires?
 

Noobz347

Stangnet Facilities Maint Tech... Er... Janitor
Admin Dude
Jan 4, 1985
42,890
21,072
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Box behind Walmart
Dec 23, 2025
#7
  • Dec 23, 2025
  • #7
Now wire-nut connections?
 
Z

Zipcity

New Member
Dec 23, 2025
5
1
1
Florence Alabama
Dec 23, 2025
#8
  • Dec 23, 2025
  • #8
cant get codes dont have a scanner. No wire nuts the aftermarket doesn’t have any wiring issues it… the photo is the kind of temp gauge I have installed
 

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Z

Zipcity

New Member
Dec 23, 2025
5
1
1
Florence Alabama
Dec 23, 2025
#9
  • Dec 23, 2025
  • #9
I believe that it could be the constant control relay module
 
Reactions: General karthief

AeroCoupe

lube between the nut and the face. I know my lubes
Founding Member
Oct 28, 2001
5,782
3,914
183
Claremore, OK
Dec 24, 2025
#10
  • Dec 24, 2025
  • #10
Cheap scanner and does the job:

Amazon.com

Buy this and pull codes. This will help narrow things down so you are not shot gunning parts.
 

Chythar

Recently finished repairing my rear
20+ Year Stangneter
Aug 26, 2004
2,373
140
113
Foothill Ranch, CA
Dec 24, 2025
#11
  • Dec 24, 2025
  • #11
The 94-95 5.0 blocks have two temperature sensors - one that feeds the gauge in the dash (the CTS), and one that feeds the engine computer (the ECT). If the ECT has failed and is sending random values to the computer, the fan won't kick on. Found that one out the hard way. A higher-end code reader an show PIDs in the computer, which includes the ECT values. I'm sure there's a way to test the ECT using a voltmeter, but I don't know how nor what values are appropriate.

I believe that if the CCRM had failed, the fan wouldn't turn on at all. Since the fan does turn on when you unplug the temp sensor, the CCRM is likely fine. You can also run the KOEO and KOER tests, which test if the fan runs. You'll hear it turn on for a bit during the tests.
 

nickyb

I gotta say i never painted my nuts, Never Ever
15 Year Member
Apr 3, 2009
2,965
1,613
153
nevada
Dec 24, 2025
#12
  • Dec 24, 2025
  • #12
Yeah what they said.
 

manicmechanic007

5 Year Member
Sep 26, 2017
2,524
709
143
Roy, Utah
Dec 27, 2025
#13
  • Dec 27, 2025
  • #13
The CCRM plugs melt
 
Reactions: General karthief
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