Heater/AC Blower Intermittent
- my5thmopar
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Heater/AC Blower Intermittent
The other day I took the 70 D200 out and was using the AC. I usually use medium speed and Max AC. I made a 20-30 minute trip, stopped, came back out 15 minutes later and blower didn't work. I could hear and feel it turning slowly. It has done this twice now. I turned it off, tried again later that day, then today and it was working normally. Could it be the resistor or is the motor on its way out?
1964 D100 Utiline
2019 Ram Classic
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- Sweptline.ORG Pioneer
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Re: Heater/AC Blower Intermittent
Running the blower at full speed is easier (less heat) on the resistor. Running the fan on low speed increases heat. Heat is hard on electrical components. Would it be feasible to take the blower out & look it over? See if it spins freely or drags? Check wiring for corrosion or brittleness. Check all connections too.
Blowers & headlamps draw more current than about anything else on a stock vehicle of this vintage.
Bucky
Blowers & headlamps draw more current than about anything else on a stock vehicle of this vintage.
Bucky
1966 W500
1975 W600
1978 W200 club cab
1975 W600
1978 W200 club cab
- my5thmopar
- Sweptline.ORG Pioneer
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- Joined: Thu Aug 08, 2013 8:51 pm
- City: Columbia
- State: TN
Re: Heater/AC Blower Intermittent
I don't remember if the blower can be removed from the heater assembly. I'll have to find my FSM and take a look. I had the assembly out a couple years ago changing the heater core and cleaning the mouse house out. I can take the glove box out and do some checks. I wasn't sure what happens if the resistor is bad but, I seem to recall that only high works when it is bad. Thanks Craig712edf wrote: ↑Mon May 28, 2018 5:29 pmRunning the blower at full speed is easier (less heat) on the resistor. Running the fan on low speed increases heat. Heat is hard on electrical components. Would it be feasible to take the blower out & look it over? See if it spins freely or drags? Check wiring for corrosion or brittleness. Check all connections too.
Blowers & headlamps draw more current than about anything else on a stock vehicle of this vintage.
Bucky
1964 D100 Utiline
2019 Ram Classic
viewtopic.php?f=34&t=36025&hilit=build
viewtopic.php?f=34&t=40251
2019 Ram Classic
viewtopic.php?f=34&t=36025&hilit=build
viewtopic.php?f=34&t=40251
- my5thmopar
- Sweptline.ORG Pioneer
- Posts: 1003
- Joined: Thu Aug 08, 2013 8:51 pm
- City: Columbia
- State: TN
Re: Heater/AC Blower Intermittent
Well wouldn’t you know it would be the hottest day of the year. Went to parts store and put a quart of oil in. Came back out and fan dead. Tried hours later and nothing. At least I’ll have something to trouble shoot and fix.
1964 D100 Utiline
2019 Ram Classic
viewtopic.php?f=34&t=36025&hilit=build
viewtopic.php?f=34&t=40251
2019 Ram Classic
viewtopic.php?f=34&t=36025&hilit=build
viewtopic.php?f=34&t=40251