I recently began having cooling issues with my 1990 corrado with a 1993 VR6 implant (was a G60). The car ran great for the first couple months after the 1993 motor was put in. Then just recently it began to run hot - above 230. Shortly thereafter the heater core blew. I have successfully bypassed that.
Now I have noticed that the cooling fan will come on intermittently (comes on for 30 seconds then turns off and will not come on again for another few minutes or so and even then it runs for 30 seconds - no more). I shorted the fan switch and the fan will stay on as long as I short it, so I guess I ruled out the fan?
Also, the fan control module (FCM) keeps blowing the 20 amp fuse for the fan. The funny thing is that the fan will still come on intermittently (as i described above) with the fuse blown. Is the blown fuse causing the fan to run intermittently rather than when it should?
I've been trying to determine what is causing the fuse in FCM to blow. The 30 amp fuse for the cooling fan in the fuse box under the dash is fine. The 10 pin connector on the FCM was pretty corroded when I disconnected it. Could that cause the short? Also, when I lightly shake the FCM, there is something inside that is loose and knocks around? Is that normal? Should I just buy a new FCM to rule it out? Not sure what else could be causing the fuse to blow.
Any help or suggestions would be greatly appreciated. As background, I am an electrical novice at best. I've only made it this far based on the great posts in this forum, so thank you all for that.