Can just part of the ccrm go bad? - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 8 Old 09-26-2002, 10:40 PM Thread Starter
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Can just part of the ccrm go bad?

My fan wont run at all, but my fuel pump works fine. Let me know.

Gary


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post #2 of 8 Old 09-26-2002, 11:01 PM
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Yes, there are several relays in there.

I'd check the under hood fuses first, then check any fusible links.


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post #3 of 8 Old 09-26-2002, 11:12 PM Thread Starter
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fusible links? where do I look for those? Is there a fuse for the ccrm?


Gary

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post #4 of 8 Old 09-27-2002, 01:33 AM
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I don't have a wiring diagram, but you might trace the wires and make sure there aren't any links or aftermarket electrical loads tied into the fan circuit.

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post #5 of 8 Old 09-27-2002, 03:38 AM
 
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CCRM is ok, fan is not

Unplug your connector to the fan and check for overheating, burning, crumbling, etc.

The fan is what is the culprit, not the CCRM.

There is a "CCRM recall" for our cars, but they just put a circuit-breaker inline between the relay module and the fan to shut down the fan when it trys to draw too much power.

The fan's bearings have worn out (as have mine) and it draws too much power to run and that overheats the wires and melts them right at the connector.

If you don't have this problem, I would be surprised. You may be able to get the fan running again with a wiggle at that connector, but ...

Ford calls our bad fans a "CCRM recall" to misdirect their expense to replace our fans and really sh*ts on us.
I hope you have better luck. My plan is to replace the fan with the Mark VIII fan and use the stock wires and let the computer control it, I don't know if it will work until I try...
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post #6 of 8 Old 09-27-2002, 09:22 AM Thread Starter
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I checked the voltage to the fan plug. Nothing. I also hooked a 12 volt battery to the fan, and got it to run. The fan is only about 3 years old.

Gary

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post #7 of 8 Old 09-27-2002, 03:00 PM
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The CCRM controls A/C compressor, Fuel Pump, EEC power and Low/High speed fan. The relays in the CCRM are powered by 1 12vdc power source, so if any of them work then it's not a CCRM power problem. I had 2 CCRM's fail on my 94gt! The first one would drop out the A/C and Fans after a while when it got above 90 degrees outside the second one just died.

Have a good one
Jim
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post #8 of 8 Old 09-27-2002, 03:58 PM Thread Starter
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Jim- I must have been smoking crack last night. I checked it all again today. When I ran a code test (koeo), the low speed fan cycled, but not the high. Then i started the car and turned on the a/c. The ac ran for a few minutes, and so did the high speed fan. The a/c went warm for a few minutes, and the fan stopped. Does THAT sound like my CCRM is going out.

Gary

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