cdade

i did the the check via the green plug under the dash that checks on the computer activation of devices and the relays and the fans all worked fine. So it seems that it should work but it does not. Is there a way to check the coolant temperature sending unit ...for instance by shorting or opening the the circuit via the plug that connects to it what am I missing I dn't want to buy and go thtough the install hassle for a plug tht has no problems any help