3p141592654;1985666 said:Read the resistance on the ECU sender (two prong one) beside the gauge sender and see if it is reading hot too.
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?Section=FI&P=113
3P- I see where you are going and it should tell me my problem. Do you know of a good method I can use to monitor the coolant temp of the car? Such as a thermometer in the overflow tank or something (would this give an accurate temp you think). The pot of water won't help me in this case. The ECU sender was brand new about 2 weeks ago, so hopefully this should tell me if its my gauge sender or something else. Another quick little insert...I tried using the sensor for the auxillary fan as well and temp does the same thing. I think signs are pointing to the car actually being hot. Does this sound like a bad T-stat?
@supraguy- I thought about that, but the car never cools off at all once it gets to H it stays there as long as i let the car run. Also, I can feel/ hear the coolant coming through the upper radiatior hose and it feels like its flowing smoothly. However, it's easy enough to try so i will bleed/flush the system when i get a chance.