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08-24-2020, 01:40 PM
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#1 |
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Registered User
Join Date: Feb 2012
Location: Smyrna TN
Posts: 1,153
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AC blows on high only
My 74 blows on high when you slide the top slide to AC no matter where the fan switch is. If you move the slide to anything other than AC the fan switch works as it should. Any help or advice would be appreciated.
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1971 Longbed BB Cheyenne Super 1972 Longbed SB Cheyenne Super 1972 Longbed Highlander Custom Deluxe 1975 K5 4x4 full convertible Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=645165 Greg Smyrna TN |
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08-24-2020, 02:34 PM
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#2 |
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Registered User
Join Date: Dec 2014
Location: Euless, Texas
Posts: 520
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Re: AC blows on high only
I had the same thing till I found out from another squarebody guy. The temp slider has a slight indent just about 1/4 " to the right of full cold. So with temp slider all the way on cold, slide slightly to right till you feel a little bump. This will allow the fan to operate on different speeds. I couldn't figure it out till I found out.
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1974 Cheyenne 10 LWB Stock 350 W/HEI /TH350/AC/4 BBL Quadrajet Mopar by Birth Chevy by Choice |
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08-25-2020, 04:22 PM
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#3 |
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Registered User
Join Date: Mar 2020
Location: The Woodlands,Tx
Posts: 588
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Re: AC blows on high only
do these fans run all the time on low. i have a 78 i am putting together and mine is running at low all the time. not sure if this is factory as the switch says low not off
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08-25-2020, 04:34 PM
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#4 |
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Registered User
Join Date: Feb 2012
Location: Smyrna TN
Posts: 1,153
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Re: AC blows on high only
Bandit130 that was it. Thank you.
__________________
1971 Longbed BB Cheyenne Super 1972 Longbed SB Cheyenne Super 1972 Longbed Highlander Custom Deluxe 1975 K5 4x4 full convertible Build Thread http://67-72chevytrucks.com/vboard/s...d.php?t=645165 Greg Smyrna TN |
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08-25-2020, 04:48 PM
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#5 | |
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Registered User
Join Date: Dec 2014
Location: Euless, Texas
Posts: 520
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Re: AC blows on high only
Quote:
The fan runs on low speed all the time. The switch shows LO at the bottom setting, no off. There is MED1, Med2, HI. With the help of an electronics engineer, there is a way to eliminate the low speed. On the blower motor resistor, the 4 wire connector, remove the top wire from the connector. It eliminates the low speed.
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1974 Cheyenne 10 LWB Stock 350 W/HEI /TH350/AC/4 BBL Quadrajet Mopar by Birth Chevy by Choice |
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