Ac Blower Motor Too Weak
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Fleet Mechanic
Joined: Dec 2006
Posts: 1,388
Likes: 6
Ac Blower Motor Too Weak
Can Anybody Tell Me If The Actual Blower Motor Or Fan Can Be Upgraded To A Larger Or Faster One? Ac Blows Cold In My 78 Bronco But Seems Like Air Is Not Coming Out With Enough Power?? Heard That U Can Upgrade But Not Sure. Thanks.
Senior User
Joined: Nov 2004
Posts: 162
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turn selecter on vent then turn blower on high check the flow of air from vent and then see if you can feel air coming out of the floor vents and defroster usually if air is coming out of all three your vacuum is weak and the door that switchs the vent flow around isnt closing all the way. that means you have a vacuum leak out there on the modulater or the modulater is bad on the housing where your heater hoses go in good luck
Cargo Master
Joined: Nov 2003
Posts: 2,000
Likes: 39
From: North Dakota
I looked around for a faster blowing fan on my 88 and had no luck. I did have a vacuum problem as well and that did not help it out. I could feel air coming out of my defrost and floor exits. It wound up being the canister. Just do as chevygoneford said and check for leaks.
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