Hi there i just recently completely tore down,cleaned and reassembled this heater it was filled with years builup and looked like had something spilled in it* now it still works but is hardly getting hot is that a link or resistor need replaced?

SOURCE: 2000 OLDSMOBILE ALERO HEATER DOESNT WORK

did you say you replaced the resister or you did not? if you did not i would, but first i would run 12 volts strate from battery to heater motor and make sure motor runs if motor runs replace resister.

SOURCE: Heater resistor repair in 1999 chev. K3500

The blower motor resistor is under the passenger side of the dash. If its still there you will have to remove the plastic cover, not tough. Your looking for a flat connector with 4 to 6 wires. The resistor will have 2,3, or 4 little bolts holding it in. It will be easy if you get a new one so you can see what it looks like. From what you described It sure sounds like the resistor.

SOURCE: Blower Motor Resistor for front AC/Heater

remove glove box....its in the casing near motor.....2 screws and 1 connector

SOURCE: Heater blower resistor gets very hot

its got a bank of resistors and it will get hot. The fuse blowing out may just be a fluke thing. Replace the fuse (with the proper size)and run it normally, The fuse is in the system and is designed to burn out long before any real damage can occur,

Testimonial: "Thanks stevemcgraw1. I am at ease now. Going to re-check the value of the fuse with the manual and check the draw from the blower. Cheers!"

Mark Lewis

• 105 Answers
• Posted on Jun 05, 2010

SOURCE: need to replace ac/heater fan resistor

The Blower Motor Resistor is located on the passenger side firewall, not far from your A/C's H-Valve (or expansion valve), going inside of the vehicle. The blower motor resistor has a 4 or 5 way black connector plugged into it and this is the only visible portion of the Resistor you will see. Remove the wiring connector and remove the 2 or 3 screws with an 8 mm or 5/16" socket (8 mm and 5/16" are the same). Once the screws or fasteners are removed, just pull the blower motor resistor out of the firewall and if you look at it, it will have various coils of wire on it, sometimes it will show burnt coils, but you can always check the various coils with an Ohm-meter.

Aside from that, install the new Blower Motor Resistor and Voilà! Your inside Blower Motor should work just fine.

A brief note here, if your fan doesn't work when the fan switch is on High, then it's not the Blower Motor Resistor, but possibly the Blower Motor itself. Should this occur, please get back to me insofar as how to replace the blower motor and why the blower motor's wires have to be twisted...even with the new blower motor fan.

Best of Luck,

"00 Buck"

"Still living on the Right Side of Dirt..."