Heater Problem

[scruffboy]

I have an 89 N/A and I have the push button heater controls (I hear some of the foreign cars have knobs). Well, now only the high setting works. The Low and Medium buttons will not activate the heater at all, but if I hit the High button it comes on (and works real well). No, I don't hear gurggling, so she doesn't need to be "burped". Could this be fuses? All the other switches work, like "Defrost" or "Foot Heat". But they all only work on the high setting. Also, the digital Temp readout still works, not just reading out but adjusting the heat. I think it's gotta be electrical, but I'm not sure. Any one have some ideas on what's up?

Thanks,

James in NJ

[Fuel]

I would put my money on bad connections to your buttons. If it were a blown fuse I'm pretty sure that none of the heater buttons would work.

[j3pz]

ya alot of people have this problem. it is electrical. i cant say exactly what it is but i know a couple of weeks ago i saw a thread about this and how to fix it. i believe you need to soder something behind the dash, cant recall though

[mrnickleye]

Go here to get the most likely answer to the problem, which is the heater fan resistor.

http://www.supras.com/06/techcenter/...6aee2ee4e99f34

This site will be very helpful for other things, too.

And if the coils are too far gone, like mine were, you can make some out of safety wire (from motorcycle shop).

PS: I haven't read a thread yet that it turned out to be a problem with connections or the buttons. Please follow up with a post as to what fixes it.

[scruffboy]

I could not find a post anywhere about this problem either, but the info you gave me was very thorough Mr.Nickleye. I just happen to suck at anything electrical and I have fat stubby fingers. I really can't picture me holding two small pieces of wire together with one hand, a sodering gun with the other and the soder in the other? I don't think so. We got a guy in town called "AutoElectric", I've had him do work before and he's pretty good. At least I can hand him the steps needed to do the work. Thanks for the research.

Sincerely,

Scruffboy

[mrnickleye]

If you remove the cover under the glove box (a few nuts, 10mm socket), you can look under there and see the resistor. 2 phillips screws and the connector. Pull it out and look at it. If its got bad coils, it will be obvious. Take it to auto electric to solder it, then put it back in.