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09-15-2019, 09:46 AM
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#1 |
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Senior Member
 
Join Date: May 2001
Location: Independence MO.
Posts: 7,705
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Blower motor won’t turn on with AC in my ‘73
I have a 73 with factory ac, the blower motor works on everything except for when you put the selector on AC. It turns the compressor on, but I have no fan speeds at all. It’s an all original 55k mile truck. Any ideas??
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72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale |
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09-18-2019, 01:45 PM
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#2 |
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Registered User
Join Date: Apr 2012
Location: Texas
Posts: 129
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Re: Blower motor won’t turn on with AC in my ‘73
Check the fan. see if you're getting 12V with the switch on. IF not check the switch. make sure you're getting 12V at the switch and each of the settings out to the fan resistor.
It's great that it's an all original 55K mile truck but you need to realize you have a 40 yearl od truck with 40 year old problems. Sun, heat, cold, All cause problems. Had a friend and he couldn't understand why he neede to replace all vacuum and eater hoses on 40K mile car. It was 20 years old. dry rot is a B.
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1990 suburban r1500 k 350 2wd |
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