OK update...... tried again to purge air from system, using an old technic that I used to get the air out of the system..... well no air pocket. also put infrared gun on various locations on the motor. The readings were within 210 fh. BUT... changed the CTS/sending unit again.. after testing ohms impedance. sure the new sensor I replaced 2 weeks ago failed. Yep the guage was not accurate.... that did not explain the vary in temp but the large vacuum leak does (right above the bleeder for the TS housing) when cold no vacuum noise.. engine hot with hood closed.. noticeable. I'm sure it running a bit lean and messing with the PCM and fans had soething to do with this bizar experience. leave it to me to come up with this. Thanx for the data presented to me folks. Poor shame not one reply with everyone on board here,
