[87MH]

Questions are always welcome here.

Usually, you will get a bunch of sometimes different answers.


I agree with Mark, first disconnect the thermostat and check if the fan is running.

If it is........

On units as old as ours (antique, vintage, just plain old), it is possible that many modifications may have been made by the Previous Owners (PO's), and not only do you have to trouble shoot the actual problem, but also problems that may have been caused by the POs.

The fan running when the ignition is on is a real puzzler. One possible explanation is that the PO had a "thing" (light, clock, fan, whatever) that he wanted "hot" all of the time, and this "thing" was already connected to a wire controlled by the ignition switch.
It is possible that the PO tapped into the line going to the fan, and electricity is now backfeeding from the ignition controlled "hot" back to the fan, causing some decreased voltage to run the fan.
Not saying that this is the cause, only a possibility.
My unit has been a never-ending source of joy and frustration this past year as I have tracked down ghost voltages, internal wire separations, corrosion, extra wires, and other unexplained phenomena in the quest to make a 20 year old moveable reliable and livable.

One of the things we share here on the Forum is the quest to keep these aging American Icons useable and affordable.

If you don't have a good voltmeter, get one. If you don't know how to use it, take a course at an evening college in automobile repair for dummies, and prepare to get to know the innards of your Argosy intimately and on a first name basis.

Keep us posted on your successes and failures - we learn from each other!

Good Luck!