Overheating problem!

[kurv]

so after playing with it a bit more. I decided to just beat up the ccrm a little with a cresant wrench. As the temperature gauge got almost to the L in normal. The low fan came on for about 5 sec.. and turned on again a few minutes later, like it was working. So I should also consider the possibiltiy of my stock gauge not being accurate at all. Anyway to test the gauge or should I just buy a new?

 

[HISSIN50]

so after playing with it a bit more. I decided to just beat up the ccrm a little with a cresant wrench. As the temperature gauge got almost to the L in normal. The low fan came on for about 5 sec.. and turned on again a few minutes later, like it was working. So I should also consider the possibiltiy of my stock gauge not being accurate at all. Anyway to test the gauge or should I just buy a new?

That's not normal.

As suggested before, you should get an aftermarket gauge (mechanical is less prone to error) to at least help you fix this issue. Later, you can remove the gauge if you don't like it.

You would appear to have an issue with the EDF circuit. I won't even get into it unless you have a DMM and want to trace circuits. I've gone through my EDF and HEDF circuits and it was kind of a PITA.

Good luck.

 

[kurv]

Is it possible to rebuild the CCRM? Or can I buy a new unit? How much?

 

[The Green GT]

Is it possible to rebuild the CCRM? Or can I buy a new unit? How much?

I am having my friend rebuild mine at school. It has a bunch of resisitrs and diodes and other electronic crap the average guy wont be able to change. When hes done with mine I might be able to hook you up. I got a used one on eBay for like $25 and they are like $150 brand new.

 

[kurv]

So after being fed up for a while I decided to install a manual fan switch.

http://www.allfordmustangs.com/Detailed/499.shtml

After connecting everything correctly, it doesn't work. Does this tell me the CCRM is not functioning properly?

 

[HISSIN50]

So after being fed up for a while I decided to install a manual fan switch.

http://www.allfordmustangs.com/Detailed/499.shtml

After connecting everything correctly, it doesn't work. Does this tell me the CCRM is not functioning properly?

Assuming all connections are sound, as you noted, it suggests the HEDF relay, common, N.O. or positive coil relay inputs, or the fan and it's wiring are the issue.

Personally, I'd bench test the fan if you dont know that it works properly. Then start checking I/O's at the CCRM to try and find the issue. I can dig up the pin-out if you desire testing the I/O's at the CCRM.

Good luck.

 

[Houston5.0Jay]

Ok.. after reading this I foudn me and him are having somewhat the same issues..
my car was having horrendous performace.. i found that i had a bad mass air meter so we replaced that and boom horsepower... now though im popping 564 - Electro-Drive Fan circuit failure and the car is getting hot fast and is pinging alot as the guage passes the halfway mark..

whats going on with my car? what does this code mean?

 

[fordtech28]

Ok.. after reading this I foudn me and him are having somewhat the same issues..
my car was having horrendous performace.. i found that i had a bad mass air meter so we replaced that and boom horsepower... now though im popping 564 - Electro-Drive Fan circuit failure and the car is getting hot fast and is pinging alot as the guage passes the halfway mark..

whats going on with my car? what does this code mean?

it means your fan is not turning on probably or the low speed on the ccrm is short

 

[HISSIN50]

Ok.. after reading this I foudn me and him are having somewhat the same issues..
my car was having horrendous performace.. i found that i had a bad mass air meter so we replaced that and boom horsepower... now though im popping 564 - Electro-Drive Fan circuit failure and the car is getting hot fast and is pinging alot as the guage passes the halfway mark..

whats going on with my car? what does this code mean?

See elsewhere on the thread for testing the low speed fan input at the CCRM. FWIW, the default is for the fan to be on low speed. And get it fixed before driving anymore (at least get a manual switch installed).

Good luck.

 

[sade04]

woot!! thanks man, i was just starting to have over heating problems towards the beginning of fall which kinda stumped me cause i was fine all summer. I'm glad a new sensor was all i needed, and it wasnt anything major! i had replaced that sensor in the spring with a napa unit but i guess it crapped out pretty quick. thanks again man:SNSign:

I had a problem like this a few months ago, my car would overheat all the time in traffic unless I either had the A/C or heater on. But it would cool right back down once I got moving fast enough. Set your a/c to "off" and just let it idle in the driveway and look at the fan to see if it turns on when the temps reach close to halfway on the gauge. Mine never did turn on, and I traced it back to the temp sensor, it had an open circuit (no resistance at all). Got a new sensor for $25 and now the fan works fine, no overheating.
Good luck.