Question about 1984 Chevrolet El Camino

Open Question

1984 El Camino AC/Heater vents on dash

How to trace vacuum hoses that direct air/heat from floor to dash? My car only blows at feet not through the vents on the dash. Thanks Carl

Posted by malibu07 on

  • madtssh Nov 23, 2008

    air blows only on floor ,,,found black ball under hood ,,no vac to it ,,no lines to it ,,,were do this lines come from and were do they go need drawing of vac system thanks sonny



5 Related Answers


  • 46 Answers

SOURCE: vacuum hose diagram got a

I had this problem with my '93 Ford Probe. What happened was the shaft coming out of the vacuum solenoid was onnected to a plastic arm for the valve that rotated for where you want the air to go. This plastic arm was broken over the years of constant use so I make a small metal one.

Posted on Nov 21, 2008



  • 20 Answers

SOURCE: Heat wont blow through heater or defroster vents

common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Posted on Feb 23, 2009



  • 16 Answers

SOURCE: No air blowing from the dash vents

sounds like you have a vacuum problem

Posted on May 04, 2009

Kelly C Bundy II

  • 161 Answers

SOURCE: Carb vacuum diagram for 1984 toyota 4x4 22r

these things are not available online due to copyright restrictions. you must get a paper manual.

Posted on Jun 11, 2009

Ray Keckeisen

  • 599 Answers

SOURCE: A/C Blows out at feet or through defroster, not through dash

the ac blend door is out of adjustment or the the actuator is not working look behind the glove box and watch the arm move

Posted on Jul 24, 2009

Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

2014 Ford Expedition AC Blowing through the floor vents even when HVAC controls are set for dash only.

Look for a vacuum line off or something stopping vacuum-operated doors from being able to open and/or close doors in or under the dash, or near the floor.

Apr 24, 2017 | Ford Cars & Trucks

2 Answers

Vents won't blow hot or cold air. Comes from defrost and feet when you put fan on.

It's the vent actuator, it moves the baffle that changes the direction of the air flow.
Here is a video of a broken vacuum hose that creates the same problem.

It could also be a failed actuator.

Sep 19, 2016 | 1997 GMC Safari

2 Answers

I have no heat thru the vents, just blows cold air. do I need a new thermostat? or is my heater control valve stuck?

Most cars today do not have a water diversion valve for the heater core; rather they use a blend door in the ducting under the dash. There are a pair of them. One door diverts input air either through the heater core or the A/C evaporator, or both. This will control temperature. The other door diverts air to the floor vents, dash vents, or the defroster vents. These doors are vacuum-controlled on most models. You could have a door problem, or possibly a clogged heater core. To check the heater core, run the vehicle to operating temperature, and then trace the heater hoses to where they enter the firewall. Check each hose for temperature. The inlet hose should be very warm to the touch, and the outlet one the same or slightly cooler. If the outlet hose is much cooler than the input, there is probably a restriction in the heater core.

Nov 17, 2015 | Cars & Trucks

1 Answer

2007 merc grand marquis heater air comes out all of the vents and very little out of the defrost vents

Check to make sure the engine vacuum is getting to the heater/ac control. Bad vacuum hose or leak. Many vehicles use engine vacuum to move heater doors and controls. When the vacuum is absent, it usually defaults to air blowing out the AC vents.

Feb 01, 2014 | 2007 Mercury Grand Marquis GS Sedan

1 Answer

My heater does not blow in floor in a dodgeram 1500

the heater vacuum motor and lines needs to be checked.Also get the blend door checked.



As per your problem mentioned. There are few solved help links to troubleshoot these problems. Go through the list and Click the link below:----

2000 Toyota Avalon: No heat on Passenger Side?


No heat on Oldsmobile Silhouette?


Heater blows cold?


Heat blows cold on drivers side and hot on passenger side?


Hot air on the driver's side vents only?


Temperature gauge does not move and no heat when heater is ON?


1992 Toyota Camry: A/C Control light Flashing and A/C not Blowing Cold?


No heat, blower blows only cold?


Ford F150 Ac only blows through defrost vents?


Dodge A/C come out of defrost vents only?


Ac vacuum line on dodge cummins?


Ford ranger AC blows cold through defrost vents instead on cabin vents?


2005 Chrysler PT Cruiser: A/C Blows Warm?


2009 Mercury Grand Marquis: A/C blows Cold From Defrost Vent Only?


AC not blowing through Vents on 2007 Chevy Trailblazer?


Passenger side temperature is warm air out of dash vents?


These will help.


Nov 28, 2012 | Cars & Trucks

1 Answer

Fan blows no heat out of vents

If you are saying the fan does not blow air thru the vents, could be a broken fan cage or a blend door problem.

Aug 21, 2012 | 1984 Chevrolet El Camino

1 Answer

2000 Ford Taurus SEL ac/heat blows through floor and defrost vents only

There is no vacuum to the controls. Look for a vacuum hose that is no longer connected to the engine intake manifold and repair it.

Feb 15, 2018 | 2000 Ford Taurus

2 Answers

1976 cadillac eldorado ac is charged comp clutch engages but heat stays on changed heater control valve blower blows out floor barely out ac vents or def

Sounds like the blend door actuator which diverts air from defrost,to bi-level,vent etc. It's vacuum driven and when it fails, it's usually an indication of a vacuum leak. To trace the leak, start the car, turn the AC on high and starting at the firewall in front of the passenger's side, trace the vacuum lines backward until a leak is detected. If no leak is detected, it's very likely that the blend door actuator is faulty and needs either repair or replacement. Best of luck.

Sep 10, 2009 | 1976 Cadillac Eldorado

2 Answers

I car ac has aproblem. when i turn it on it just blow the air in my feet , and i cannot set it to blow air in the panel. what can i do to fix it , or what is the problem

You have a loose of vacum to he AC controls. The different doors that direct air to dash floor vent ect. are vacuum operated, the vacuum source is the engine.

Sep 16, 2008 | Chrysler New Yorker Cars & Trucks

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

553 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

85239 Answers

john h

Level 3 Expert

23515 Answers

Joe Taylor
Joe Taylor

Level 3 Expert

2228 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides