HVAC Blower Resistor Resisting

[etlsport]

do you have power to the hvac controls? i have had a bear of a time trying to figure out why i dont.. never considered the resistor

[ZEUS]

The compressor fires up like normal but the blower itself... oh, I have a '99, so I am not sure how much we differ in our HVAC controls behind the dash. Anyway, the controls do still have power based only on my observation of the compressor activating.

I was surprised how clean the resistor block was when I first pulled it; and looking thru the mounting hole everything seemed pretty clean but I guess there may be an obstruction somewhere. Next thing I plan to check will be the fuse block mentioned by carlymac and if that doesn't work I will try all the other things he mentioned...

Eric, how long has yours been on the fritz?

[tom4bren]

I've not seen our resistor but I'm guessing it's ceramic. If that's the case, soldering the leads may not have fixed it (the resistor element is down deep inside the ceramic). Since you know it fried (& yours is not the first) I'd replace that before doing anything else. Chances are pretty good that replacement of that part will get you another 100K miles.

[etlsport]

been acting up since middle of summer.. sounds like we have completely different issues though.. i dont get any power to my hvac controls on 2/3 of my startups.. used to be if i would remove the heater relay and replace it, problem solved for the trip and everything would run as normal.. eventually it started cutting out during driving too where id lose power to the controls (and the whole system would turn off).. i replaced the relay completely and that helped for like 2 weeks then back to how it was again.. right now i just have the relay removed completely and bypassed with a wire.. it works fine except the hvac system doesnt turn off with the car so i just have to make sure to switch it off manually

[deermagnet]

Back in the day, those resistors were burnin' up so fast, Tone was repairing and/or making his own. Check and see if he has any laying around.

I had the burning smell and the motor quit six years ago almost to the day. It was so long ago I was still under warranty. My dealer had the resistor and a motor shipped overnight via that Isuzu Parts Emergency Replacement Program or whatever it's called. With the weather around 0°, it was an emergency. It was no fun without the blower motor.

I actually don't know if the motor burned up also. I didn't need to know 'cuz I wasn't paying for it. It's been fine ever since. Just try a new resistor first, by whatever means ya can get one.

Mark

[tom4bren]

"Any ideas on other things to check?"

'lectric fan???? All that throttle response finally did you in.

[Triathlete]

I really wish we had an available smilie with the middle finger salute... just for you.

You could borrow one from Pirate 4x!