Search the Community
Showing results for tags 'cooling fan'.
The search index is currently processing. Current results may not be complete.
I have a 2008 DTS that is overheating due the fans not operating correctly. The fans do not come on. Only 1 fan will come on if you run the AC, the passenger side fan runs with the AC on, the driver side fan does not run at all. I replaced the entire fan assembly (2 fans in the assembly) same thing happened with the new fan. I checked the relays, they tested good, I replaced the relays just for the sake of it, fuse is an inline fuse you can view, it looks good, put a reader on it tested good, coolant levels are good, replaced thermostat for good measure. What can the issue be? why is the driver side fan not coming on, and why is the fans not running without the AC on? This is driving me crazy.
I have and 05 STS 3.6 with 169K Miles. Sufficed to say the car was not well maintained by the previous owner. Bought it a few weeks ago at auction. Had a Bad Floor shifter and the Cooling Fans were pretty much burnt up with the motors falling out the assembly. Replaced the Cooling Fan Assembly with a used part. Worked at the repair shop for a day of two then one of the motors seized up. Junkyard gave me a working replacement. Installed the replacement assembly and the fans won't kick on when the car gets up to temp and subsequently the car gets warm and starts to overheat. Things we have Checked-Fans will not kick on even when running the A/C. Fans WILL turn on when jumped from the relay. Unplugged the Coolant Temp Sensor...no change. Changed the Thermostat...no change. Swapped the coolant fan relay...no change. Checked the water pump, Coolant seems to be circulating properly. Looked for signs of bad/worn wiring in the Coolant Fan harness. What are we(myself and the mechanic) missing? Do the Coolant Fans in the 05 + STS have a module? If so, does anyone know the part#? Could the first junkyard coolant fan assembly that seized up, possibly have fried the module or a computer? Please remember the fans that came with the car were sooooo bad, that the wiring was fried and the motors had actually fallen out the back of the fan assembly. My next step is to run the codes and look for anything relating to the fans. If that doesn't yield anything, send it to a Cadillac Repair shop to pinpoint the issue. Anymore tests that I can run or step by step diagnosing I can do before I send it to the pros?? Could this be a more serious electrical issue? Any help you guys can lend is greatly appreciated. I did some reading, not much out here with the 05 + STS relating to the cooling fans. My general mechanic is stumped.