86 GT. Settings 1-3 work on the fan when I have the heat on. Is this the blower motor or something in the intrument panel?

Jim

Mine does the same thing so I would like to know as well

The top setting on the fan bypasses the resistor block and runs through the high speed blower relay under the hood. Check for power in and out of the relay. Power for the high speed blower comes from the fuseable link. More than likely your high speed blower relay is bad.

[This message has been edited by seajai (edited 02-28-2014).]

quote Originally posted by seajai: <snip>

Thanks seajai. I'll let you know when I get it sorted out.

Jim

I had the same problem and just fixed it. The relay was bad.

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Turbo 3800 E85 F23 5spd spec5
10.91@133.1

I got in the relay today, and it is fixed. Thanks to everyone.

Jim

Actually I think its called a rheostat, if it is the coil thing I am thinking of, if not forget what I said.

Steve

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Technology is great when it works,
and one big pain in the ass when it doesn't



Detroit iron rules all the rest are just toys.

Thanks for the info. Just before I put it away I noticed no hi speed. Drove me nuts. Thought it was vacuum problem with switch. Will check it out. It would be nice when and IF IT EVER WARMS UP!!!!!

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FIEROBUG!!!!!!!!!!

quote Originally posted by 84fiero123: Actually I think its called a rheostat, if it is the coil thing ...

Nope. That's a multi-tapped power resistor. It might sometimes be called a ballast resistor.

A rheostat is a continuously-variable, usually wire-wound, power resistor that's value can be changed easily by turning a knob or moving a slider.

[This message has been edited by Marvin McInnis (edited 03-06-2014).]