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My air conditioning is not redirecting when the control knob is turned.

Checked switch and it works ... looked for a vacume hose leak but cannot find it

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  • Richard McCormick
    Richard McCormick Nov 25, 2014

    2001 F 250 4X4 auto transmission manual everything else


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  • Cars & Trucks Master
  • 3,368 Answers

Great question but no idea of what make or model you are talking about. I know you can probably see it but we cannot. More information would be helpful. A lot of the later cars use electric actuators instead of vacuum ones, check that out.

Posted on Nov 25, 2014

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Posted on Jan 02, 2017

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SOURCE: broken air condition control switch or cable

My heat and cool control switch will not go all the way to the left or right so i'm not getting lots of heat can you help me please

Posted on Sep 23, 2008

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Reguardless of how old the car is should make no difference as too how cold the AC is blowing. I have a 1997 Honda Civic with 215,000 miles on it and it still runs great, so yours is just barely broken in :) Maybe you need some refrigerant (R-134) added to make it colder? As to the power issue of the car, all air conditioners take appoximately 5-10 horsepower away from a cars engine when turned on. Have you ever had your spark plugs changed? That is usually cheap $10 - $20 if you do it yourself or probably $50 - $75 if you take it to a mechanic, and it makes a big difference in power. ( Make sure they use NGK spark plugs, that is what Honda uses) Also, on your other post about the timing belt which YES you do have a timing belt and not a chain, I have always been told to change the timing belt AND WATER PUMP at every 90,000 miles. The water pump should be changed because if it locks up it will break the new belt they just put on and then the damage I talk about later will happen to the engine. That should cost you around $250 - $400 depending on where you take it? preferably a Honda dealer because it may cost a little more but they know their stuff. It is important to change it because if it breaks it will cause your valves in the engine to get bent and then you will basically need a new motor at that point. Lastly, if you want to find the year of your car then look inside the drivers side door frame, there will be a VIN number and a manufacture date. Well I am sure this is more than you ever wanted to know about your car but there you go:)

Posted on Oct 09, 2008

  • 67 Answers

SOURCE: saturn code p0442, evap system small leak, can't find leak

I would send the car in for a smoke test...So much easier to find the leak...

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SOURCE: where do the vacuum hoses go from the control 1999 Dodge Pickup

first ... Make sure that you have vacuum to your control head. This is normally the black vacuum line. The vacuum than goes to the various vacuum motors on the Heater /AC case. These vacuum motors rarely fail. The normal fault is loss of engine vacuum ..cut line or not secure to engine. second.. a fault with the vacuum reserve reseviour. When the engine needs the vacuum this is your vacuum supply.

Posted on Apr 29, 2010

  • 105 Answers

SOURCE: Honda Accord LX has bad temperature control

  1. what year model is accord?
  2. there are several doors in the air box
  3. blend door (hot cold)
  4. mode door (defrost, floor, vent)
  5. recirculation door (outside air)
  6. if the control mechanism is defective. the tech may have reached under the dash and manually opened the blend door.
  7. which control knob does not work mode or temp?

Posted on Jul 27, 2010

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1 Answer

Air delivery mode control not changing air flow 2009 Pontiac torrent

Need more information to help solve this problem.
You mean speed of air flow or direction of air flow?
-If direction of air flow no change that mean:
1. Cable from the knob to control door is slip off or if the system is control by vacum. The vacum line is leak or slip off.
-If the peed stay same even move the switch to hight or low:
1. Bad switch.

Mai Lor

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My brother in law just changed my belt in my ford windstar. My air conditioning isnt working now, it only blows cold air from the windshield area fans, not in the front. Where is my air conditioning...

I've been working on the same problem today. I plugged the 2 vacum lines behind the rightmost control switch, the one for the rear and viola I get air out of the front. Went to the junk yard and got a replacement control panel. That didn't help. So for now I put tape over the vacum lines for air. Not sure what the real problem is yet. Anyone?

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99 mercury sable automatic trans vehicle idles very low randomly even stalls out sometimes high idle occurs as well reaches about 4000 rpm at times. engine light threw 4 codes, all to do with o2 sensors...

Sounds like a broken or torn vacum hose, pcv valve clogged, or bad Idle air control motor. Did you spray carb cleaner on vacum hoses or near the plastic intake., and did the motor rev up or down? Those codes represent a lean condition which means most like a vacum leak or clogged idle air motor. Sometimes the intake manifolds crack or the intake manifold gaskets crack. FInd that vacum leak or inpect iac motor

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Jun 28, 2010 | 1998 Ford Windstar

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1988 Sedan DeVille A/C works but all air goes to floor and defrost/windshield. No air though dash vents? Seems there must be an actuator or relay not working?? Don't know what I'm looking at exactly under...

On drivers side check actuator that goes to the parking park, it should have vacum, if it dose it's going be an actuator for the vent door's, if it dont have vacum then go under the hood and look for a vacum hose that goes into the fire wall make sure it has vacum, if the vacum hose goes into a resevor by pass it some time's it get clog, also if you have vacum under the dash with parking brake on, it should release when put into drive. more then likely that will also work once you fix your vacum problem.

Jun 23, 2010 | 1988 Cadillac Sedan DeVille

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2002 Land Rover ~ Freelander - No heat coming from the heater

Look for two water lines about 1 in in diameter running back toward the condensor unit in the firewall. On one of those lines will be a control. It is sometimes vacum controlled. When they are vacum conrolled they have a tendency to get stuck or you may have lost vacum to the unit. You can use a vacum tester and short piece of hose to test this to see if you have lost vacum or if it is stuck closed. Connect the test hose to the control on teh hose and apply vacum to the unit. If the valve opens you will get heat in the vehicle. If it does not open then it is stuck in the closed position and will need to be replaced in most cases.

Sep 10, 2009 | 2002 Land Rover Freelander

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When i turn on heat or ac it runs on the defrost setting but wont shift to the vent or floor until the 4 wheel drive knob gets turned on 1999 f250 I heard this was a common problem is it the switch for 4x4...

you have a vacum leak in the 4x4 engagement system. there is a vacum solenoid on the passenger side next to the battery. should have 3 hoses to it I believe. check those hoses for cracks they go all the way to both front wheels. the ones in the wheel wells are usually messed up. if all hoses are good hook up a hand held vacum pump to each wheel they should hold about 15 hg on the vacum guage if not your wheel hub seals are leaking.

Jun 24, 2009 | 2002 Ford F250 Super Duty SuperCab

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Vacum leak ? air comes from vents when driving when not turned on

sounds like your blend door is loosing vacum check for melted or disconnected vacum hoses (most are plastic) the blend door is controled by one black and one black w/green stripe. As for the e break check for connection or cracked or worn hose end

May 25, 2009 | 1988 Lincoln Town Car

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97 Dodge Ram 1500 Club Cab w/n turn over

Common problem with Dodge Rams. Nobody has the right parts (dealer only) the right part numbers, or the right diagrams or component lists or locations.
The 5.9 L most likely has no EGR valve, as mine does not. It does however have an Idle Air Control Valve located at the back bottom of the throttle body, which if removed, will show carbon buildup, preventing proper fuel/air mix.
You also may have a vacum leak at one or more vacum hoses on the intake manifold, a leak at the vacum ball that stores vacum for working the vent controls when the engine is off. It looks like a big black ball, and has a vacum line going from the top of the intake to the ball, maybe located behind the RH pass headlight. The rubber hoses dry oput, crack, and rot after a few years due to OZONE exposure from the air. Go ot and buy 6 or 8 feet od 3/32 rubber vacum hose, and replace everything that is suspect. Look for cracked Ts. Dont forget to check the larger vacum hoses that go to the charcoal canister and fuel tank vent valves. The rubber elbows have a tendency to pop off the charcoal canister connectors on a hot day if you overfill the gas tank, and the rubber elbows are old and stretched out.
God Luck.

Sep 25, 2008 | 1998 Dodge Ram

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Air vents

I was having a similar problem with the vents not redirecting air when selected. I went onto the auto zone wed site and found very helpful schmeatic diagrams for electrical and vacume systems. That lead me to investigate a possible vacume leak. There was a vacume hose broken tucked away by the battery. I repaired the hose with thick wall heat tape and now the vents move normally. The vacume starts on the P/S top of engine runs by the battery into the fore wall. Once in the P/S foot well you will see a purple hose that you can quickly check the vacume pressure. It should be a noticable vacume. If not work your way back to the engine. If you do have a good vacume there then I would suggest going to a auto wreckers and picking up a new heater control module for around $90.00 in stead of the $240.00 fro the dealer. All you need is a phillips screw driver to replace it.

Aug 04, 2008 | 1999 Pontiac Montana

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