Alright so i am swapping over to OBD1...had a resistor put in the computer so the knock sensors will read correctly. I put the computer in tonite (still needs tune) but when it runs for about 20 seconds the fan turns on as normal then goes nuts and instanly doubles speed. I do have an electric water pump and my fan did rub on some things at one time....but i did not do this until i switch the computers tonite. So will the tune fix this or is something else wrong?

 

in the constants table there are temp settings that enable low fan speed and high fan speed sounds like you ser them the same and the high speed setting is being enabled to early, set them about 10 degrees C different.