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Cooling Fan Stopped Working

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Old 07-14-2010, 08:27 PM
  #41  
Stormcrowe
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Originally Posted by EViL427 View Post
Well, you can add me as its newest member. ... Looks like I'll be performing some wiring surgery soon.
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Generally it's a relatively painless and cheap fix.
Let us know what you find
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Old 07-14-2010, 10:27 PM
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I just cut all the wires and soldered them together. Been working fine for quite some time!
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Old 07-16-2010, 12:31 AM
  #43  
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Got it lifted and pulled the connector apart. Sure enough, melted plastic. I pulled the center grounds out of the connectors and just reconnected it with the other two wires intact. I will solder the ground together and either shrink tube it or just use some black electrical tape.

You guys must have skinny arms. It's not going to be easy to get in there with a soldering iron.
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Old 08-16-2010, 10:18 PM
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question:

my center ground melted out about a 2 months ago...and today my positive power side melted out leaving me stranded...so I now have all the wires bypassed i.e. no harness present anymore.

Is this a problem? I dont see how it would be, but wanted to ask to see if anyone knows anything

thanks
ryan
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Old 04-26-2011, 11:25 AM
  #45  
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TTT as my fans stopped working again last night. My ground wire bypass looks intact. My suspicion is that the power wire, which is still in the connector, is now melted. I'll update when I get under there and take a look, probably tomorrow. I have a Mexico trip I need to make this weekend so hopefully it's something simple again.
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Old 04-26-2011, 12:49 PM
  #46  
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Bill what are your fan settings? I found that if I went greater than 25% in the 192 cell the fan ran at 100% all the time. I have 25% 192 and 78% 196 and the car runs 192 in stop and go.

If they are running all the time it'll get hot.

Oh by the way...I used to have a Casper's Electronics manual fan controller...until it failed on me in rush hour while raining. I removed it and since it was a year old just threw it in the toolbox. Well, turns out a friend had the same problem, and he called them, and they have a new model that goes inside the car. I called them, and even though it's been a couple of years, they told me to send mine in and they would send me a new one. Now that's good service!
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Old 04-26-2011, 01:51 PM
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Joe I have the 2.5 bar SD OS so my fan tables is extended down to 163 degrees. Having said that I command 80% at 180, 90% at 190 and 100% from there on. The car needs the fan running pretty much all the time. I should probably bypass the PWM somehow.
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Old 04-28-2011, 09:30 AM
  #48  
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Now the controller fried and the positive cable that was still inside the harness was not making good contact anymore. Continuing with a new thread.

http://forums.corvetteforum.com/c6-t...post1577467132
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Old 10-05-2011, 09:17 AM
  #49  
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Originally Posted by Austin-vette View Post
Had a similar problem, turned out the insides of the electrical connector for the fan, by the upper right side of the radiator, had melted--check the connector, seperate it and look inside.
This is exactly what happened to me. The connector melted on the harness next to the radiator, not the pig tail going into the fan itself. The problem was that GM cannot get this part any longer. I was forced to wire the fan directly to a relay/fuse. Does ANYBODY know where to get this connector from? I just need the connector and I can splice it on.
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Old 12-07-2012, 10:02 AM
  #50  
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Where are the 2 fan connectors/controllers located???
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Old 12-07-2012, 10:09 AM
  #51  
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Originally Posted by Ahmer View Post
Where are the 2 fan connectors/controllers located???

On the fan assembly, you will see them easily once your under there.
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Old 12-07-2012, 10:17 AM
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Ok awesome. Now the symptoms of a bad PWM Fan Controller module are not speeding up the fans when engine hot???

I do have the fans running at low speed all the time. Its just that I dont hear them power up to max when driving slow in a parking garage. Also could a bad ground also cause or is it usually a PWM module.

What I am asking is, will a bad PWM module result in COMPLETE power loss to a fan or just no the abaility to crank up amps...
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Old 12-07-2012, 10:26 AM
  #53  
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Originally Posted by Ahmer View Post
Ok awesome. Now the symptoms of a bad PWM Fan Controller module are not speeding up the fans when engine hot???

I do have the fans running at low speed all the time. Its just that I dont hear them power up to max when driving slow in a parking garage. Also could a bad ground also cause or is it usually a PWM module.

What I am asking is, will a bad PWM module result in COMPLETE power loss to a fan or just no the abaility to crank up amps...
Usually, do you have a stock tune? If so the fans do not go full power until the car is really hot.
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Old 12-07-2012, 11:13 AM
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Originally Posted by 5 Liter Eater View Post
You guys were right. I disconnected the fan plug and immediately smelled burnt plastic. The plastic around the center pin of the connector was toast. I took the center pin out of both sides and connected it outside of the harness for now. See the carnage below.

Without you guys I would have bought a whole new fan assembly before finding this out. Thanks very much!



What view is this??? I am trying to get my bearings straight because I think I have a similar intermittent issue as well.
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Old 09-21-2013, 04:06 PM
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Had intermittent overheat with my mobile Chernobyl unit. The fact that I had added a blower and twin fan radiator to the car made the plug nearly impossible to reach. I will have to do quite a bit of disassembly to repair.

Center pole fried. Tried to upload image but no luck.
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Old 12-14-2014, 06:32 PM
  #56  
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it sounds like I found my problem. Drove my car 50+ miles with a small amount of traffic with my girlfriend to lunch. Coming home sitting in traffic it hit 250 degrees and the fan won't kick on. I was about to buy a new fan!! thank you CF!!!
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Old 07-07-2017, 09:37 AM
  #57  
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Default Cooling Fan not work due to Melted Wiring Connection

Originally Posted by steveb601 View Post
Same problem I had and same solution. After I tested that the fan was ok by jumping a hot wire to it from a different power source and it worked fine, I then unplugged the connector on the wiring harness near the radiator and the center contact had melted causing intermittent short. I'd check that first.
Thanks, Guys, I had the same problem and checked and sure enough, it was a melted connector. I removed the breather and radiator top cover and was able to pull it apart. I plan to wire it direct.
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Old 07-07-2017, 01:39 PM
  #58  
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Originally Posted by dreed614 View Post
Thanks, Guys, I had the same problem and checked and sure enough, it was a melted connector. I removed the breather and radiator top cover and was able to pull it apart. I plan to wire it direct.
Just in case you change your mind and chose to go back to the OEM wiring and connectors, I just did repaired mine last week.

https://www.corvetteforum.com/forums...as-struck.html
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