Blower speeds. Any advice

[circmand]

My wife's '99 blower fan is only operating on high, the other three speeds are dead, and the fuse is good. I think it's the fan resistor that needs replacing? Any ideas out there? Many thanks.

Y/M/M is your wife?

[Moncha]

Y/M/M is your wife?

[blacksambo]

New resistor is in place works fine. Thanks for the repair offer but needed it done quick. (By the way, the resistors say do not repair on them. Maybe they know something we don't know?)

[tom4bren]

"(By the way, the resistors say do not repair on them. Maybe they know something we don't know?)"

Yup ... they make more money selling you a new one rather than telling you to fix your old one.

[PK]

New resistor is in place works fine. Thanks for the repair offer but needed it done quick. (By the way, the resistors say do not repair on them. Maybe they know something we don't know?)

I might be talking through my arfes here, but I think the repair is to re-solder contacts that have separated.
Being a resistor, they create heat, and the original unit could be assembled with a special solder that gives a thermal overload protection.
This is achieved by using a special alloy solder that melts at a known temperature.
If you do the repair with standard solder, you loose the thermal overload protection.
We use this method to provide automatic closing of fire dampers in ships.
It is called a "thermal fuse" or "fusable link".

of course, I might be totally wrong in this case.
Perhaps Deermagnet, or one of the electronic gurus will speak up.

PK

[tom4bren]

I seriously doubt that anyone is going to get a better solder joint using a radio shack iron than was achieved at the factory (even using a different alloy than was originally intended). The repaired solder joint will fail quicker than the original did.

I've even soldered fusable links before & had them blow out again.

[blacksambo]

Thanks for the additional insight. I'm sure you are both right. I don't think the warning was there to sell more parts. That's a little far fetched and leaves them open to liability suits. Afterall, the VX is the most warning oriented SUV on the market given the Consumer Report's lawsuit agains't Isuzu and all.....