I have replaced the switch behind the ac/heat control panel and still no high. Any suggestions?
I know there is a resistor in the blower motor harness under the hood, does any one know the value? Thanks in advance!

 

I think I read that the resistor handles the lower speeds only, so that wouldn't be the issue. Have you tried swapping out the relay? It's under the hood as well.

 

Relay.

JamesC

 

That will be my next move. I know the resistor handles low and medium but the service manual says check the resistor. I'll check the relay!

Both of you! I'll let you two know! This website totally ROCKS!

 

Is it necessary to pull the neg. battery cable to replace the relay?

 

Whenever I'm messing around with electronics, I yank it as a matter of policy.

JamesC

 

Thank you sir! Will do.

 

Is there a way to check the relay? I've read different view points about this.

 

 

Well, it's not the relay either. Next?

 

https://www.thirdgen.org/forums/elec...aro-rs-no.html

JamesC

 

Thank you James! I cut and pasted all the tests and pictures for the "idiot" plug. Will let you know what I find.

 

OK, my grey connector is not melted but the black connector looks like this. I copied this from another post. My grey connector (where this shows two red wires connected looks good). Should the burnt black connector look this way?

 

Ahaa! After further inspection the inside of the grey connector is BURNT. Will post the results in a few!

 

Wire nut... It's probably not related to your problem, but I'd eliminate that wire nut. A length of heat shrink tubing, some solder, and an iron would clean that up in a hurry.

 

Ok, took longer to update my cell phone software than to fix the bad connector! Thank you James for your knowledge and your built in search engine! That was the exact fix! I'm posting a couple of pics from my cell phone. Be sure you take your grey connector apart to check for damage! This website ROCKS! I'm having trouble posting my pics. I'll try again later.

 

The wire nut was from a post in 2007.

 

Ok, see if I can post a couple of pictures of the culprit connector![ATTACH]

[/ATTACH]
Here are two pictures of the BAD GREY connector! If you have a blower motor that will NOT come on on high, check this grey connector, it is more than likely fried!
Once again, THANKS TO JamesC guru of Third Gen.

 

James, you seem to know your stuff, my 1991 RS has a burn smell and a little smoke from heater / a/c selector switches and even when top on is in off position, fan will still blow, and it blows out defrost vents, when on vent position, please help, can you replace the whole switch assembly, what is the cure ol' wise one!!!