Question about Ford Explorer

1 Answer

Started noticing a hissing sound coming from under the dash about two months ago, possible vacuum leak? Now that the heat is on us in Dallas the AC shuts down with just partial load on motor, kinda of like what would happen when a floored my old 85 Mustang GT, any suggestions??? Thanks

Posted by on

  • 2 more comments 
  • cyoung27 May 26, 2009

    Not sure about the compressor, but it indeed does shut down blowing from the vents.



    Clay

  • cyoung27 May 26, 2009

    Thanks! Is there a solenoid under the dash, passenger side, that will temporarliy shut down vents and AC under WOT conditions? This is where I hear the hissing sound when accelerating? Thanks

  • cyoung27 May 26, 2009

    Thanks,

  • cyoung27 May 26, 2009

    I will find out tomorrow, when I have time to look at it

×

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 145 Answers

Does the compressor shut off or does it stop blowing from the vents?

Posted on May 26, 2009

  • 1 more comment 
  • yankstorm02
    yankstorm02 May 26, 2009

    OK the vents are controlled by vacuum. Open the hood, on the passenger side on the firewall you will see a vacuum hose going through the firewall find that hose and check it for vacuum with engine idling

  • yankstorm02
    yankstorm02 May 26, 2009

    Check the hose carefully for breaks this is the most common place for a break

  • yankstorm02
    yankstorm02 May 26, 2009

    No problem,those actuators are relatively inexpensive

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

My AC only comes through the top vent not comeing in through the front vents or the top in the back


It is impossible to propose a diagnosis without knowing the YEAR, MAKE and MODEL of your vehicle.

That being said, 100% sure you have a vacuum leak somewhere, possibly just a disconnected vacuum line under the dashboard. Listen for the hissing/sucking sound under the dashboard when the vehicle is running, and there's your problem!

May 21, 2015 | AC Cars & Trucks

1 Answer

Vacuum pump location


The problem has nothing to do with a "vacuum pump."

You either have a vacuum leak under the dashboard (vacuum line broken or fallen off), or you have a bad vacuum solenoid (less likely).

Best thing to do is listen for a hissing sound under your dashboard when the vehicle is running with the A/C off. Find were the hissing sound is, and there's your vacuum leak!

(My bet is that you will find the vacuum line has come off of the automatic parking brake release. This is the most common source of internal vacuum leak in those vehicles.)

Jul 18, 2014 | 2001 Ford Expedition

1 Answer

When the defroster or AC is turned on there is a hissing coming from under the dash


sounds like a vacuum leak,check the vacuum lines/connections.

Oct 07, 2013 | 2001 Jeep Cherokee

1 Answer

1987 300z ac air only comes from the defrost. mechanic said not vacuum hoses under the hood.


Locate vacuum hoses that go from inside switch to actuator doors. Either switch is leaking, hoses are leaking or kinked or actuator is leaking. Listen for hissing noise under dash at idle or obvious bad hoses.

Jun 15, 2010 | 1987 Nissan 300ZX

3 Answers

1998 Chevy S-10. The heat will only blow out vents


Possible vacuum leak in the heating system.Start and run the truck for a minute or so,after shutting it off listen for a hissing sound.You may need to remove the kick panels under your dash to determine just where the leak is coming from.Then you can determine if its a damper door or the line is disconnected or broken.Two other possibilities.The control head could be broken(this sends air to the different locations)or an under hood vacuum leak.There's plastic line from your engine that feeds into the cab of your truck,that vacuum line is used to control the vent activation.This is take a lot of time to track down, I hope this helped you?

Dec 07, 2009 | 1998 Chevrolet S-10 Pickup

2 Answers

1996 ford ranger air hissing noise coming from under the dash


More that likely the vacuum supply hose to your heat/ ac controls is leaking or, one of the vacuum motors is unhooked or ruptured. Use a small piece of hose, if you have any, start the engine, then stick one end of the hose up to your ear and search around under the dash with the other end. Keep moving the hose until you isolate the spot where the noise is loudest.(cheap stethoscope). Use a mirror if you cannot physically see the area. That is where you will find your leak. TJ

Nov 12, 2009 | 1996 Ford Ranger SuperCab

1 Answer

1999 taurus. 6 cyl OHV. Ran fine over the weekend. Parked car in driveway. Started this morning. Heard high(RPM) pitch winding sound coming from engine or tranmission. Noticed will not reverse or move into...


Check for vacuum lines going to transmission or any vacuum line under hood. It is possible an animal chewed on the lines or wires. We get a few reports of that at Fixya.

You might also look under the dash by the pedals for a vacuum leak. There are vacuum switches for parking brake release and the neutral start switch.

Oct 06, 2009 | 1998 Ford Taurus

1 Answer

1999 honda accord


Check coolant level when engine cool & removed rad cap & have a look. Check for any vacuum leaks (hissing sound) under hood at back of engine area, as well as under dash area.

Jan 25, 2009 | 2000 Honda Accord

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

Related Topics:

90 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

75797 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

fordexpert

Level 3 Expert

5495 Answers

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

Answer questions

Manuals & User Guides

Loading...