TSC89
SCCoA Member
First, I know this problem has been beat to death on the forum but I have read every post about this and found no answer.
I have a 1989 SC automatic and radiator cooling fan never comes on except when tested by a OBD tester. I have tested the fan speeds directly and have low and high speeds. Pulling the A/C connector while the engine is running does not activate the fan either. The code pulled during OBD test was the one for the ECT but I have already replaced it twice, cleared the code and the fan still does not activate. I have already tested the wiring going to various sensors and the ECA. I know I can cut the #14 wire and tie it to #17 but if the high speed does not come it does not matter.
Could the ECA be going bad and not activating the fan?
Thanks.
I have a 1989 SC automatic and radiator cooling fan never comes on except when tested by a OBD tester. I have tested the fan speeds directly and have low and high speeds. Pulling the A/C connector while the engine is running does not activate the fan either. The code pulled during OBD test was the one for the ECT but I have already replaced it twice, cleared the code and the fan still does not activate. I have already tested the wiring going to various sensors and the ECA. I know I can cut the #14 wire and tie it to #17 but if the high speed does not come it does not matter.
Could the ECA be going bad and not activating the fan?
Thanks.