1997 E150 has weak ac vent air flow
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5th Wheeling
Joined: Apr 2011
Posts: 46
Likes: 3
1997 E150 has weak ac vent air flow
Howdy............97 E150 has minimal air flow from a/c vents. I have replaced blower motor,resistor. and cleaned the evaporator coil to no avail. I have previously heard that the 1997 model had factory air duct issues. How do you clear this issue? My 2005 E150 blows harder on low speed than the 97 on high. Any assistance will be greatly appreciated. Thanks, Bill
Mountain Pass
Joined: May 2023
Posts: 114
Likes: 19
I dont wanna waste your valuable time so heres a shop manual so you can figure it out on your own. https://charm.li/Ford%20Truck/1997/E...0Conditioning/
Fleet Owner
Joined: Aug 2010
Posts: 21,253
Likes: 1,656
From: Reynoldsburg, Ohio
I don't know where or how an E-Series of that year and into 2013's as well could or would develop "issues" within the HVAC air ducts. I do know the diverting damper doors could develop operation issues causing noticeable reductions in flow through one of the vent options so that should be checked.
Here's an overview, drawings and photos of a typical vacuum controlled HVAC from 1997 forward: Vaccum Control Heater-A/C
Hope this helps.
Here's an overview, drawings and photos of a typical vacuum controlled HVAC from 1997 forward: Vaccum Control Heater-A/C
Hope this helps.
Hotshot
Joined: Jul 2020
Posts: 10,478
Likes: 2,637
From: Near Salt Lake City
Let me at it with some water and a blower nozzle with the blower motor out
You say you cleaned it out in there?
That is about all you can do, is clean it out and replace the blower motor
The airflow distribution is not the problem IMO unless air is leaking out other ducts when in panel
You say you cleaned it out in there?
That is about all you can do, is clean it out and replace the blower motor
The airflow distribution is not the problem IMO unless air is leaking out other ducts when in panel
Fleet Owner
Joined: Aug 2010
Posts: 21,253
Likes: 1,656
From: Reynoldsburg, Ohio
^^If the distribution control surfaces (blend door, defrost, vent/floor etc.) aren't working properly that could possibly cause the poorly described symptoms OP posts about. Its also conceivable the inlet under the exterior cover trim just below the windshield has an obstruction.
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Fleet Mechanic
Joined: Jan 2023
Posts: 1,318
Likes: 446
I found cleaning the evaporator was tricky. My compressed air blower nozzle would not fit so I used 1/4 plastic tubing and a ball valve to blast air through the corners of the evaporator. Check your work with an inspection mirror or a boroscope (connected to cell phone... about $30). Tree seeds and debris had clogged my evaporator over the years.
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