1998 Ford Tuarus blower motor wont shut off. Bad relay or short?

Question

If I unlug the power cord it will shut down, otherwise will run constant. I still have speed control on fan, but will run. Any ideas?

Answer 1

Find the relay, and have a friend turn the ignition switch on, and off, and on, and off. Does the relay click? If not then the relay is bad and stuck. The relay has contact points that sometimes will weld themselves together, thus making it impossible to shut off the blower motor. If the blower relay works fine, then you will have to take a look at the control switch. Is there an off position? Some vehicles has no off position and the motor runs all the time. My truck is this way, and the motor always runs regardless of the fact I don't need it running. This is no way to design things, but that is how they did it..... go figure? If you have a position on the controls that says "off" it should shut off everything when you go to it. If the relay is not stuck, then you will need to remove the control switch, not the speed switch. The speed switch controls how fast the blower goes. I mean the scale where it says heat, vent, defrost, etc; there should be one that says off, and suspect this switch to be bad and/or shorted out.
Glad I could help you. Good Luck!!!

Answer 2

If you turn off the key and it keeps running that is a bad thing, must be a short somewhere near the fuse box.

If it is running all the time with the key on. Isn't there an OFF button on the climate control?
Some cars the fan speed control only has low and then higher speeds.. While other cars the lowest speed setting turns off the fan.
If the fan speed has OFF as the lowest setting then I would suggest to replace the relay as it must be shorting across and not allowing the fan to be turned off.

Answer 3

If it is equipped with auto temp control,replace the blower speed controller, it is behind the glove box, into the heater case with 2 screws. I belive the basic for the part is a 19e624 and only available from a dealer....

Answer 4

you have gotten larger fish to fry till now to long-- you're probably going to lose your intake manifold gaskets sometime down the line. there replaced right into a TSB issued in this subject in till now fashions (and that i've got faith the 2004 besides), and hundreds of people have been having extreme priced maintenance that GM won't conceal even although they have popular of the subject for it sluggish. It has to do with the Dexcool coolant they put in there (long existence coolant) which has a technique or the different been attacking the gasket, finest to a leak-- probable an inner leak the place the coolant gets into your oil and creates the flair for an extremely undesirable situation spoke of as hydrolock. extra, GM would void your guarantee in case you flush and oil-substitute all that stuff out and replace it with the golf green classic antifreeze.look ahead to dropping coolant stages whether you do no longer see any drips and have that engine checked and replace the gaskets with Felpro replacements. suggestion-- get thee faraway from the GM. I threw in some Bars Leak and caught a on the marketplace sign in mine. low-cost, grimy restoration? Dang skippy. i'm no longer dropping a plug nickel on the thang. that's GM's toddler. Nissan is a lot greater useful and that they stand in the back of their vehicles. GM needs to stand in front of theirs.

Answer 5

Ford has a problem with the fan resistors shorting out. Its where you unplugged the power. A few screws hod it in.

Answer 6

its just like a fan relay on a Furnace. They constantly run too. It is your blower relay.

Answer 7

Could be a short, also could be the switch.