Heater/Blower problem in '92 Grand Marquis...

[Mytch]

My blower started dying last winter. It would work for a while and then stop working. Then work, then not, etc. Now it is completely dead. (Stopped working this summer while using the air conditioner - don't know if that is related.)

How do I know if it is, in fact, the blower? I get no forced air into the vehicle at all. However, while I am driving at freeway speeds, I can feel a little heat coming through the vents. I'm not at those speeds most times, so not sure if this is consistant or not. I keep the heat switched on just in case...

I checked the fuse (under the driver's side dash) and it was fine. Any other small things to rule out/check?

It's starting to get cold out here, so any advice is appreciated.

[way2old]

Use a test light or voltmeter and see if there is current at the blower motor when you turn the blower through each of its speeds. If there is current at the blower connection, replace the blower motor. If there is no current at the motor, check for current coming from the resistor.

[Mytch]

Thank you for responding. I am a complete novice (with a capital N), but determined to figure it out. I have read about the test lights and will pick one up. Now, will there be instructions on the test light package as to how to use it? I assume so. And when you say "current", do you mean power? Like a light will come on?

As for the resistor. How do I check that?

Someone said that maybe it could be a loose wire or connection or something... If I check something like that, will it be obvious under the hood what I should be checking as far as the blower connetions?

Thank you!

[way2old]

The test light will light up if there is power (current and voltage). There will be a clip on one end of the wire. Clip this to a good ground. (clean metal, or battery negative cable). The probe end will stick into the connector until it contacts metal. If the light comes on, you have current and the blower is bad. One of the wires going to the blower will be a ground and the light will not cpome on. Just post any questions and we will be more than happy to help you. The blower resistor is down behind the passenger side of the engine on the plastic heater housing. The connector on those are bad about burning and causing problems. We will be here.