Hvac blower does not turn on when I set a low speed, it only turns on when set to high speed.
Checked fuse, seems fine.
Any advise on what I should check next?
Kw t700
kw hvac blower not turning on on low
Discussion in 'Trucks [ Eighteen Wheelers ]' started by nakoBilly, May 8, 2012.
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Unless they've changed them on the T700 it looks like this.
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Thanks for your help...the t700 dash is set up like the t2000...so ill be looking under parking brake buttons.
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I was going to suggest switch or wiring harness at switch. I wasn't aware of that sensor, that's good to know. Thanks
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nakoBilly Thanks this.
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The resistor is under the hood in the heater box on a T2000.
nakoBilly Thanks this. -
if u have a pet in the truck or if u run in dusty environments thats whats hard on those resistors. the pet dander and fur and dust gets on the resistor and causes it to burn out
nakoBilly Thanks this. -
Thanks for all great info.
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They are very fun to get to also. VERY tight fit. We had the same problem but ended up being the plug. I made a new one and it worked fine. Make sure you get a good seal around it...the screws are very hard to get tight...it uses the air from the blower to keep it cool...so its important not to lose any of the air through a leak. The resistor will last longer...you can also get more debris on it as stated earlier.
nakoBilly Thanks this. -
The easiest way that I found to replace the resistor when its under the air brake valve is to remove cup holder/junk tray (2 screws on each side and disconnect one harness and its out in the floor), remove glove box and the center gauge panel. Also disconnect the abs harness from the brain box and pull the cup holder harness and abs harness out of the hole so you have more room to work. A worn out 1/4" ratchet and 1/4" socket works good to get the skrews out. Ya have to hold your mouth juuuuuussttt right to get the screws back in, (what worked for me was left eye closed and tounge sticking out).
Oh we ran into another hiccup, some have 3 pins, others have 4 pin connectors. Haven't figured out the patern on which truck has what though, might be a good thing to check before ya pick up parts.Last edited by a moderator: May 27, 2012
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