AC fan acting up. HELP!

toyNG · 06-09-2008, 02:47 PM

After a day of wheelin, the AC/heater fan doesn't work on positions 1 and 2. But it still works on positions 3 and 4. Weird huh? Any ideas?

4Crawler · 06-09-2008, 03:07 PM

Likely the #1 and #2 speed resistor coils are burned out on the blower motor resistor, easy repair:
- http://www.4crawler.com/4x4/CheapTri...BlowerResistor

toyNG · 06-10-2008, 02:06 PM

thanks for the help. I've also noticed that both my passenger side reverse light and my passenger side brakelights have blown. Both work after replacing the bulb though. What could all this have been caused by? Like I mentioned above, this was all after a day of wheeling, which included the use of an air compressor hooked up to the truck battery. I'm guessing it may have had something to do with the compressor. But I'm relatively clueless. any thoughts??

anotherjeff · 06-11-2008, 03:05 AM

Micro Electrical Storm? Or, the Perfect Storm of 22 yr old bulb filaments subjected to 12 hours of vibration and jolts, accompanied by a series of voltage/current surges? No mystery to me.

4Crawler is giving you the good dope on the blower motor resistor pack! The "AC fan" is the blower fan.

06-09-2008, 02:47 PM	#1 (permalink)
toyNG Registered User Join Date: May 2008 Location: Redlands, CA Posts: 252	AC fan acting up. HELP! After a day of wheelin, the AC/heater fan doesn't work on positions 1 and 2. But it still works on positions 3 and 4. Weird huh? Any ideas? __________________ 1986 pickup 4x4 SR5, 31x10.5 BFG All-Terrains, Ranchos, 2" body lift, Downey grille guard and skid plate, TG sliders

06-09-2008, 03:07 PM	#2 (permalink)
4Crawler Contributing Member Join Date: Jun 2002 Location: SF Bay Area, CA Posts: 6,263	Likely the #1 and #2 speed resistor coils are burned out on the blower motor resistor, easy repair: - http://www.4crawler.com/4x4/CheapTri...BlowerResistor __________________ 1985 Toyota 4Runner SR-5, 22REC engine, dual t-cases, 4.88 gears, dual ARBs, 33x10.50 BFGs. r.c.brown@ieee.org TruckEditor@tlca.org Project: 4Crawler 4Crawler OffRoad Gettin'Off 4WD Club

06-10-2008, 02:06 PM	#3 (permalink)
toyNG Registered User Join Date: May 2008 Location: Redlands, CA Posts: 252	thanks for the help. I've also noticed that both my passenger side reverse light and my passenger side brakelights have blown. Both work after replacing the bulb though. What could all this have been caused by? Like I mentioned above, this was all after a day of wheeling, which included the use of an air compressor hooked up to the truck battery. I'm guessing it may have had something to do with the compressor. But I'm relatively clueless. any thoughts?? __________________ 1986 pickup 4x4 SR5, 31x10.5 BFG All-Terrains, Ranchos, 2" body lift, Downey grille guard and skid plate, TG sliders

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06-11-2008, 03:05 AM	#4 (permalink)
anotherjeff Registered User Join Date: Oct 2007 Location: near Redding California Posts: 293	Micro Electrical Storm? Or, the Perfect Storm of 22 yr old bulb filaments subjected to 12 hours of vibration and jolts, accompanied by a series of voltage/current surges? No mystery to me. 4Crawler is giving you the good dope on the blower motor resistor pack! The "AC fan" is the blower fan.