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Old 06-30-2011, 06:49 PM   #1
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Overheating issue

I have a 95 mustang gt that I bought from a couple that has owned it since 96. When I got the car the guy had the fan wired in direct to the fuse box to run constant. A few months later the fan gave out and stopped working. So I replaced the fan and pulled out the wire he had ran to the fuse box. He told me that there was a recall on the CCRM but he never took it in to have it changed. So anyways, I put a new fan motor in it, thermostat, coolant temp sensor and I just grabbed a CCRM off from a 97 mustang. However the fan will still not kick on. What else am I missing here and will the 97 CCRM even work on a 95? I'm really getting tired of this issue.
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Old 06-30-2011, 10:16 PM   #2
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Re: Overheating issue

Fan relay, maybe. Find it, and switch it out with the horn relay to see if it works. If that's it, then buy a new one.
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Old 06-30-2011, 10:22 PM   #3
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Re: Overheating issue

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Originally Posted by Greg687 View Post
Fan relay, maybe. Find it, and switch it out with the horn relay to see if it works. If that's it, then buy a new one.
Fan relays are in the CCRM.
Not sure if the 97 CCRM is compatible.
Checking.
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Old 06-30-2011, 10:26 PM   #4
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I had the same problem with my car, but my 4 wire connection on the passenger side of the radiator was coroded
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Old 06-30-2011, 10:36 PM   #5
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Re: Overheating issue

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Originally Posted by Trojan Horse View Post
Fan relays are in the CCRM.
Not sure if the 97 CCRM is compatible.
Checking.
Thanks for educating me.

This is my first Ford since the 80s
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Old 06-30-2011, 10:56 PM   #6
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Re: Overheating issue

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Thanks for educating me.

This is my first Ford since the 80s
You are welcome.

It appears from the searches I ran, that the 97 may be different.
The 94-95 CCRM's are the same.
I also read that it could be that the PCM (Computer) is not sending power to the CCRM (Constant Control Relay Module).
Pick up a Haynes or Chiltons manual that has the correct wiring diagrams for your car and trace/test the wiring for the fan and CCRM power.
If the PCM is not feeding power to the CCRM, then you will have to replace the PCM.
You have checked the fan fuse in the fuse/relay box under the hood, haven't you?
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Old 06-30-2011, 11:03 PM   #7
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Re: Overheating issue

Maybe this will help.

1995 Mustang CCRM Pin Out

Connector C-192 (male) Constant Control Relay Module (CCRM)
(24) terminals (2 rows of 12)
Located above/behind the Mustang's radiator on the passenger side.
Connector plugs directly into the CCRM, so no modifications are required (wiring details shown for referance only)
Pin1 Ckt229 red/orange (cooling fan motor LOW output)
Pin2 Ckt229 red/orange (cooling fan motor LOW output)
Pin3 Ckt38 black/orange (BATT "+" cooling fan relay)
Pin4 Ckt38 black/orange (BATT "+" cooling fan relay)
Pin5 Ckt238 dk green/yellow (power to fuel pump)
Pin6 Ckt638 orange/lt blue (cooling fan motor HIGH output)
Pin7 Ckt638 orange/lt blue (cooling fan motor HIGH output)
Pin8 Ckt37 yellow (BATT "+" to PCM power relay)
Pin9 blank
Pin10 Ckt37 yellow (BATT "+" to PCM power relay)
Pin11 Ckt37 yellow (BATT "+" to fuel pump relay)
Pin12 Ckt361 red (PCM power)
Pin13 Ckt16 red/lt green (IGN- hot in "run"/"start")
Pin14 Ckt228 dk blue (low fan control input)
Pin15 Ckt570 black/white (ground)
Pin16 Ckt57 black (AC clutch coil ground)
Pin17 Ckt639 lt green/pink (high speed fan output)
Pin18 Ckt926 lt blue/orange (fuel pump relay input)
Pin19 blank
Pin20 blank
Pin21 Ckt198 dk green/orange (AC high pressure cutout/fan switch)
Pin22 Ckt331 pink/yellow (AC WOT cutout relay input)
Pin23 Ckt347 black/yellow (AC clutch coil control)
Pin24 Ckt361 red (PCM power)
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Old 06-30-2011, 11:08 PM   #8
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Re: Overheating issue

also ppl say you have to buy a new ccrm but you can pop it open and solder new relays in it. far cheaper if you know how to solder
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Old 07-18-2011, 06:24 PM   #9
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Ok quick question. I have the same issue. Is it bad to wire the fan to constantly run?
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Old 07-18-2011, 10:15 PM   #10
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Re: Overheating issue

Well, the fan will burn out sooner, as you found. Potential fire hazard there too since there is no safety built in that way.
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Old 07-18-2011, 10:16 PM   #11
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Quote:
Originally Posted by Greg687
Well, the fan will burn out sooner, as you found. Potential fire hazard there too since there is no safety built in that way.
Ok just wondering if I don't wanna deal with replacing the CCRM or all the sensors.
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Old 07-19-2011, 10:06 PM   #12
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Re: Overheating issue

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Ok just wondering if I don't wanna deal with replacing the CCRM or all the sensors.
Maybe you can wire it up like this? Junkyard Electric Fan
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