57 Handyman

Lately, when the AC is turned on, the AC radiator fan on my 2005 RL has been cycling off and on. It will run at high speed for 15-20 seconds, the turns off for 20-30 seconds and repeats the cycle. I believe this continuous on-off cycling led to the bearing failure and vibration of the original fan motor. Last week, I replaced the bad motor but the on-off cycling still continues.

I don't believe this is normal operations and don't want to burn out the new motor.

I suspect there must be some other component or problem. Thank you in advance for your thoughts and recommendations.

oo7spy

Faulty relay? Probably in the under-the-hood fuse/relay box. Search "service manual" in the "search this forum" toolbar and use that.