glamisorbust
Arizona
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Joined: 10/14/2009
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Hi everyone. I just got back from a 3,000 mile road trip in my 99 HR endeavor DP. Everything went well, but the dash a/c blower motor quit working on me. I spent 2 hours with a test light trying to figure out why it wouldn't work.
I had power to the blower motor, but it would not work. I figured maybe I had a bad ground, so I ran a separate ground wire and it now works again. But, it is stuck on high only. Move the fan controls up or down and it just stays on full blast.
It will turn off, but the blower speeds do not work. It's either on full blast or off. Anyone here have any ideas what part has failed here?
1999 Holiday Rambler Endeavor 38'. Cummins ISB 275, allison 3060.
Toys pulled: 22x8.5 open deck PJ flatbed. 5200# axles. Sand car with ecotec engine. Multiple 1980's ATC's(3 wheelers). We're duners!
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MountainAir05
New Mexico
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Joined: 01/27/2007
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Check the fan speed switch, They have a rheostat wired into them and that is where you speed comes in.
Here is a link of the part you might need and part number.
http://www.evanstempcon.com/serviceparts.php
RV212146 - Resistor
* This post was
edited 08/13/16 12:22pm by MountainAir05 *
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MountainAir05
New Mexico
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Sorry double post.
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sch911
Rochester Hills, MI
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Joined: 04/13/2003
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The speeds are set by a blower resistor block. It's mounted on the HVAC plenum somewhere. It contains dropping resistors for each speed, and a thermal fuse that blows. Classic symptom is no speeds except high. Most NAPA stores should have the replacement.
OEM Auto Engineer- Embedded Software Team
09 Holiday Rambler Endeavor 41SKQ Cummins ISL
2012 Jeep Grand Cherokee Limited Toad
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GPWayne
Lake Stevens. WA
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Joined: 02/03/2005
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sch911 wrote:The speeds are set by a blower resistor block. It's mounted on the HVAC plenum somewhere. It contains dropping resistors for each speed, and a thermal fuse that blows. Classic symptom is no speeds except high. Most NAPA stores should have the replacement.
Dead ON........Been there done that. Easy fix.
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glamisorbust
Arizona
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So is the problem a blown fuse, or a blower resistor block? Where exactly would this part be on my coach?
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MrWizard
Traveling
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most likely under the front hatch
attached someplace to the A/C -heater box
if not there its under the dash between the fan speed switch and the blower
I can explain it to you.
But I Can Not understand it for you !
....
Connected using T-Mobile Home internet and Visible Phone service
1997 F53 Bounder 36s
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glamisorbust
Arizona
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Thanks Wizard, i'm gonna dig into this soon.
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