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I had my 95 ford f-150 motor rebuilt and now because of having to reroute some vacuum lines and cap 1 or 2 my vents keep opening and changing to a different position,whats happening ?.

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Sounds like you have a vacuum line or two routed to the wrong svide of the controller

Posted on Mar 01, 2019


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Posted on Jan 02, 2017

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SOURCE: ac vent problem

the vacuum canister is located under the battery tray on this model truck, however the most common problem are the vacuum lines that run around the battery box. usually the battry will leak acid at some point in time and create holes in the small hard plastic lines. i would remove the battery and check the vacuum lines first.

I’m happy to assist further over the phone at

Posted on Aug 18, 2008

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SOURCE: 1997 Buick LeSabre Limited Edition, Dash vents do not blow air

ck to see if the mode vaccum actuator is getting vaccum, you will need to test actuator with a hand held vaccum gun, if actuator has failed you will need to replace, if actuator holds vaccum and it does not move the door your door may be out of position inside case or something could hold it locked in position. you will need to check door by hand to see if it moves freely.

Posted on Aug 03, 2009

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SOURCE: 2005 ford explorer that has no heater control

the next thing to check would be the selector motors, these motors are what move door to get floor or defrost or vent air and also hot/cold air, look under the dash try to find them, there bolted to heater box,there are 3, locate one by one then move every control and watch to see linkage move find the one that doesnt move and thats your problem, hope this helps.heres a picture to help you know what it looks like.7d37251.gif

Posted on Jan 20, 2010

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SOURCE: Need 95 gmc jimmy vacuum diagram. I have a loose

THat goes to your map sensor. If you look very closely under your hood there will be a vac line diagram there

Posted on May 09, 2010

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SOURCE: I have a1997 nissan 4x4 pickup with a ka24e bad

Its so rare, check this firing order for 1997 Nissan D21 Hardbody SE King Cab 2WD 2.4 liter DOHC L4 (KA24E) and 1995 Nissan D21 Hardbody 2WD 2.4 liter DOHC L4 (KA24E)...



Fig. 2: KA24E Engine Engine firing order: 1-3-4-2 / Distributor rotation: counterclockwise

Hope helps.

Posted on Mar 06, 2011

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Runs good for a while then shuts off acts like it is running hot at times but when i check it is not hot rebuilt engine new radiator water pump thermostat also at times act like it is not getting gas but...

In the early 80s they incorporated a shutoff solenoid in the event of overheating. What happens is when the engine reaches a critical level it then opens a vacuum solenoid forcing the engine to stall to prevent it causing extreme damage. I am not sure its location on your vehicle but when it happens again, try clamping off some vacuum lines on the solenoids to find out which one clamped will the car start. hope this takes care of things. ps...change your fuel filter, It may be restricting your fuel.

Oct 19, 2013 | 1989 Ford F 150

1 Answer

Hi There., I recently had a sound upgrade carried out on my 1998 Ford E 150 Econoline 5.4cu (Conversion Van "Chariot Custom"), everything worked fine when it left to have the work done. When I...

I think you are correct , the audio store must of knocked off a vacuum line or a plug at the heating controls, this being a 1998 and conversion it may have some vacuum operated components and some electrically operated actutor motors that control the doors for the heat and the selector. i would start off by looking at the controls to see if everything is connected good,i think you will find something they broke or left off. the radio was replaced then i would have them remove it and double check there work,let me see if i can find a diagram for you, okay heres how it goes, the blend door which controls the hot or cold air is electrically controled with an actuator motor, the selector control to send air to the defrost or vents or floor is controlled by vacuum, theres an 8 port vacuum switch on the heater control that operates the selection, the vacuum line is brkoen or they broke or left off the 8port plug that sends vacuum to operate the valves to control the flow of the air. theres a main vacuum line that runs from the intake manifold in the engine compartment and this line goes in on the pass/side into the passenger compartment and then up the dash to the controls , i would start at the controls and make sure theres vacuum to the control and the 8port plug is plugged in, also check the engine to make sure the main vacuum line is connected, you would hear a hissing noise if removed, also start the engine with heater fan off and listen closely for a hissing inside the dash area by controls, if you hear this then it would mean theres a vaucuum line loose or off, good luck hope this helps. heres a diagram of the vacuum lines for the heater control.johnjohn2_61.gif

Feb 08, 2011 | Ford E-150 Cars & Trucks

1 Answer

Hello i have 2005 ford f150 iam having a problem with the 4 wheel drive on the driver side wheel actuateor i have vacuum to both hoses the big one and the small one and on the driver side there is only...

Should only be vacuum on 1 of the 2 hoses to the IWE, the other is a vent line that is just hanging in the engine compartment.

Did someone redo the vacuum lines and accidentally connect the vacuum system to the vent on the IWE ? If so, this would cause some problems with the 4WD system.

Jan 09, 2011 | 2005 Ford F-150

2 Answers

I have a 1987 F-150 w/5.0L. I recently did a tune up and replaced some radiator hoses and a couple vaccum lines. New Distributor Cap and Rotor, plugs and wires, new air filter and changed the oil and...

I do not have Vacuum routing diagrams but check your underhood labels for this routing. If not, then try internet articles. The Vacuum routing through thermal vacuum trees are probably the cause. As thermal heat changes the ports reroute vacuum for idle step-up.

Apr 08, 2017 | 1987 Ford F 150

1 Answer

4x4 vacuum seal in center hub not holding center gear back wich is causing gear to grind against hub while driving

It could be the IWE ( Integrated Wheel Ends ) solenoid causing this. Here is the PDF version of the TSB from Ford

If you can check the vacuum lines from the IWE solenoid to the IWE, to see if they are cracked. Few others have had cracked vacuum lines from the vacuum reservoir to the check valve
Here is a block diagram of the vacuum lines.

Until you have time to check everything, pull the vacuum lines ( not the vent line ) on both IWEs, and cap them. This will leave the IWE engaged, so the gears do not get ground off ( if it is not too late ).

Feb 23, 2010 | 2005 Ford F-150

2 Answers

Barely any heat coming from vents blower motor working

check the coolant level & condition of antifreeze make sure it is not dirty/rusty/muddy if thats ok try a new thermostat & radiator cap if the antifreeze is muddy you may have to blow out the heater core

Mar 02, 2009 | 2002 Ford ZX2

1 Answer

Egine chugs intermitently

sounds like it might be a vacuum problem check all the vacuum hoses and spray some wd40 around the base of the carburetor while idling. if the engine revs up then you have a carburetor base gasket problem or a leaking vacuum hose

Jan 10, 2009 | 1982 Ford F 150

1 Answer

Please help need to change my oil!!

Older vehicles usually do not have an actual oil cap. They have a PCV Valve. It is usually round and will have a 1/2" hose recirculating vapors. If you turn this about 90-180 degrees it will come off. This is where the oil goes...

May 27, 2008 | 1984 Ford F 150

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