Issue with external cooling fan control
03-17-2012, 08:22 AM
#1
Race Director
Thread Starter
Issue with external cooling fan control
I installed the external cooling fan control kit, sold by several forum vendors, recently. The kit worked as advertised for about 6 months. Last night I noticed my coolant temp creeping up so I switched on the manual switch. Usually this will drop the coolant temp quickly, however, last night nothing happened, and the temp continued to creep up. Once back in my garage I discovered that the fan was not working.
My question is will a failure of this modual prevent the fans operating. The fans would always come on when it received a signal from the computer, irregardless of the position of the manual switch, so this leads me to think that this manual switch is not responsible for my problem. I have checked the fuse and it is fine.
Any troubleshooting suggestions appreciated.
My question is will a failure of this modual prevent the fans operating. The fans would always come on when it received a signal from the computer, irregardless of the position of the manual switch, so this leads me to think that this manual switch is not responsible for my problem. I have checked the fuse and it is fine.
Any troubleshooting suggestions appreciated.
03-17-2012, 10:04 AM
#3
Race Director
Thread Starter
Checked the plug and no signs of fraying or burning. They are secure and tight. The fan also does not come on with the a/c on, so I'm beginning to suspect the fan control.
03-17-2012, 10:21 AM
#4
Heel & Toe
Member Since: Feb 2012
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It may be that. I just had a similar problem on my 09 with 13,000 miles. Fan wouldn't come on, connectors weren't melted, and didn't throw any codes. The dealer could not command the fans to come on so they replaced the electric fan motor and that fixed the problem. Mine was stock without the manual fan switch on it. Hope that helps.
03-17-2012, 01:22 PM
#5
Safety Car
have you applied power directly to the fan motor?
I'm going to assume that the related parts are OK, so, the PCm sends a signal to the fan module on pin 6 red/org wire then Dk Grn at the plug 5V reference . If the signal is there, and the fan is OK but not working, then the module is bad.
I'm going to assume that the related parts are OK, so, the PCm sends a signal to the fan module on pin 6 red/org wire then Dk Grn at the plug 5V reference . If the signal is there, and the fan is OK but not working, then the module is bad.
03-17-2012, 03:08 PM
#6
Race Director
Thread Starter
Just returned from my friends Caddy dealership. He had a mechanic check out the car. Seems the Manual switch module was not allowing the ECM to go to ground, so the fans would not run. Also, found evidence inside one of the connectors of overheating. He replaced the plug, removed the aftermarket switch module, and everything is back to normal. The mechanic strongly recommended to not use the manual switch modual ever again, as next time I might need a new ECM !
03-18-2012, 01:56 AM
#7
Just returned from my friends Caddy dealership. He had a mechanic check out the car. Seems the Manual switch module was not allowing the ECM to go to ground, so the fans would not run. Also, found evidence inside one of the connectors of overheating. He replaced the plug, removed the aftermarket switch module, and everything is back to normal. The mechanic strongly recommended to not use the manual switch modual ever again, as next time I might need a new ECM !
He told me to box mine up and send it in and they would replace it. I sent it with a nice long letter explaining I wasn't happy with my car overheating and I was hoping there was no internal damage from it overheating. Also if they knew there was a problem why didn't they notify anyone who had purchased one .
Several weeks went by with no answer. I finally called , John wasn't in but another person (engineering) knew who i was and said my module/letter were on Johns desk. He told me he would inform John I called.
Again some time went by, no return calls or boxes in the mail.I called again. John told me they were sending me a new kit. Nothing was mentioned about the condition of my car or hey we are sorry, YADA YADA.
What puzzles me is you can go to several web sites including Caspers and buy the orginal kit. There is no mention of the under the dash kit. They do make it as they sent me one finally.
My tuner also told me "don't put it back on the car and to toss it".
03-18-2012, 10:27 AM
#8
Race Director
Thread Starter
Ok i can give you a little information about that manual over ride switch. It is probably made by Casper's Electronics. Last summer after installing a Dewitts raidator & a Casper over ride switch my car over heated . After it cooled down I unplugged the over ride switch where it plugs in next to the fan control unit. The fans worked, plugged it back in and fans would not work. So I called Caspers.I talked to the owner (I believe John). He pretty much admitted they were having problems with the module overheating in the current location.They had designed a new wiring system and the module is now inside the car.
He told me to box mine up and send it in and they would replace it. I sent it with a nice long letter explaining I wasn't happy with my car overheating and I was hoping there was no internal damage from it overheating. Also if they knew there was a problem why didn't they notify anyone who had purchased one .
Several weeks went by with no answer. I finally called , John wasn't in but another person (engineering) knew who i was and said my module/letter were on Johns desk. He told me he would inform John I called.
Again some time went by, no return calls or boxes in the mail.I called again. John told me they were sending me a new kit. Nothing was mentioned about the condition of my car or hey we are sorry, YADA YADA.
What puzzles me is you can go to several web sites including Caspers and buy the orginal kit. There is no mention of the under the dash kit. They do make it as they sent me one finally.
My tuner also told me "don't put it back on the car and to toss it".
He told me to box mine up and send it in and they would replace it. I sent it with a nice long letter explaining I wasn't happy with my car overheating and I was hoping there was no internal damage from it overheating. Also if they knew there was a problem why didn't they notify anyone who had purchased one .
Several weeks went by with no answer. I finally called , John wasn't in but another person (engineering) knew who i was and said my module/letter were on Johns desk. He told me he would inform John I called.
Again some time went by, no return calls or boxes in the mail.I called again. John told me they were sending me a new kit. Nothing was mentioned about the condition of my car or hey we are sorry, YADA YADA.
What puzzles me is you can go to several web sites including Caspers and buy the orginal kit. There is no mention of the under the dash kit. They do make it as they sent me one finally.
My tuner also told me "don't put it back on the car and to toss it".
03-19-2012, 08:25 AM
#9
Le Mans Master
Just to update I bought a Caspers recently and its the new model the I recieved. I dont anticipate any problems with it. A good company that addresses the issue as soon as they knew about it.
03-20-2012, 03:06 PM
#11
Race Director
Thread Starter
FYI Update....
I spoke with Justin in the Tech department at Casper today and he said I could return my module and they would replace it at no charge. The new design mounts inside the car passenger compartment, so I assume the underhood heat was causing the problems.
They sound like a stand up company that backs it's products without the BS.
I spoke with Justin in the Tech department at Casper today and he said I could return my module and they would replace it at no charge. The new design mounts inside the car passenger compartment, so I assume the underhood heat was causing the problems.
They sound like a stand up company that backs it's products without the BS.
03-20-2012, 08:14 PM
#12
Race Director
FYI Update....
I spoke with Justin in the Tech department at Casper today and he said I could return my module and they would replace it at no charge. The new design mounts inside the car passenger compartment, so I assume the underhood heat was causing the problems.
They sound like a stand up company that backs it's products without the BS.
I spoke with Justin in the Tech department at Casper today and he said I could return my module and they would replace it at no charge. The new design mounts inside the car passenger compartment, so I assume the underhood heat was causing the problems.
They sound like a stand up company that backs it's products without the BS.
03-21-2012, 01:53 AM
#13
It took them over 3 months and my phone calls to get the new unit.This was after my old broken one sat on someones desk for months.
Also why can you go online and find the old style for sale every where still?
Seems to me anyone putting it on will end up with the same problems. Why not recall the old ones so no one has their 5-10 k or more engine overheat? It looks pretty simple to me but doesn't sound like they are addressing the issue
They wouldn't even comment or say hey we are sorry your engine overheated because of our product.
03-21-2012, 07:52 AM
#14
Le Mans Master
If you bought a new model how would you know that they address an issue as soon as they know about it?
It took them over 3 months and my phone calls to get the new unit.This was after my old broken one sat on someones desk for months.
Also why can you go online and find the old style for sale every where still?
Seems to me anyone putting it on will end up with the same problems. Why not recall the old ones so no one has their 5-10 k or more engine overheat? It looks pretty simple to me but doesn't sound like they are addressing the issue
They wouldn't even comment or say hey we are sorry your engine overheated because of our product.
It took them over 3 months and my phone calls to get the new unit.This was after my old broken one sat on someones desk for months.
Also why can you go online and find the old style for sale every where still?
Seems to me anyone putting it on will end up with the same problems. Why not recall the old ones so no one has their 5-10 k or more engine overheat? It looks pretty simple to me but doesn't sound like they are addressing the issue
They wouldn't even comment or say hey we are sorry your engine overheated because of our product.
Sorry to hear that. All I meant by "addressing the issue" is that they redesigned the product when they knew it was a problem. I don't think the old ones are still being sold. When I ordered mine 3 months ago I received the new model even though the vendor still had the old one in the picture. I have know other experience with Casper or their products so maybe I spoke to soon.
03-21-2012, 11:42 PM
#15
Sorry to hear that. All I meant by "addressing the issue" is that they redesigned the product when they knew it was a problem. I don't think the old ones are still being sold. When I ordered mine 3 months ago I received the new model even though the vendor still had the old one in the picture. I have know other experience with Casper or their products so maybe I spoke to soon.
03-22-2012, 09:52 AM
#16
Tech Contributor
I have the new version sitting in my toolbox, unused, if somebody would like it I'll sell it for $50 plus shipping. That's less than half price for a brand new item.
It's a good mod if you bracket race a lot, keeps temps consistent. I don't bracket race enough anymore to need it.
It's a good mod if you bracket race a lot, keeps temps consistent. I don't bracket race enough anymore to need it.
03-22-2012, 09:53 AM
#17
Le Mans Master
I have the new version sitting in my toolbox, unused, if somebody would like it I'll sell it for $50 plus shipping. That's less than half price for a brand new item.
It's a good mod if you bracket race a lot, keeps temps consistent. I don't bracket race enough anymore to need it.
It's a good mod if you bracket race a lot, keeps temps consistent. I don't bracket race enough anymore to need it.
04-20-2024, 05:02 AM
#18
2014 2019 C7 coolant fan module failure.
have you applied power directly to the fan motor?
I'm going to assume that the related parts are OK, so, the PCm sends a signal to the fan module on pin 6 red/org wire then Dk Grn at the plug 5V reference . If the signal is there, and the fan is OK but not working, then the module is bad.
I'm going to assume that the related parts are OK, so, the PCm sends a signal to the fan module on pin 6 red/org wire then Dk Grn at the plug 5V reference . If the signal is there, and the fan is OK but not working, then the module is bad.
