- Buick Ownership
- Roadmaster Limited
Hello everybody I am new here. Anyways... I own a '94 Roadmaster Limited LT1 that has a cooling fan problem. Neither will turn on. I have replaced so far both cooling fan fuses, both cooling fan relays, and both coolant temp sensors... (The one next to the headers and spark plugs and the one under the water pump) The one near the headers and spark plugs is from Oreilly Auto but the one under the water pump is from the Dealership... it's AC Delco... Which Im guessing is OEM. It used to be from Oreilly as well until I took my Roadmaster to a local mechanic so he can diagnose the fan problem and he unplugged the coolant temp sensor (under the water pump) and the fans finally turned on! He then asked where I got the sensor and I said Oreillys and then he said to get the sensor from the dealership and not Oreilly. So I did... I installed the AC Delco part today but sadly the fans still wont turn on. Btw I have tried disconnecting the sensor near the spark plugs and headers with the Ac Delco sensor still connected but the fans still wouldnt turn on. What do you guys think could be the problem? Maybe the AC Delco part is faulty as well? Any help/ insight on what could be the problem with my Roadmaster would be greatly appreciated. Thank you!!!