j cAT thanks for the reply, yes you are right the open cct is -39 degress when I disconnect the ect sensor connector. The new ect sensor is on it's way here I was hoping that there is something wrong with the old one even though I get a desect reading on the scan tool reads correct temp,, if I run the engine for a while it does change to a good temp.. another funny thing though is the data my scanner will not read live data only ing. turned on and the scanner will work on other cars all live data running down the road any ideas will be greatly appriciated Norm