Question about 1998 Ford Escort

1 Answer

Vacuum goes from vent to defrost when excelarate

Posted by on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Ford Master
  • 1,209 Answers

You have a vacuum leak somewhere. When you accelerate your engine vacuum drops. with a leak in the lines going to the heater control head you are not able to hold the spring loaded actuator door in the position you have it set for. The rest position of it is defrost. check for cracks or splits in the rubber vacuum hose that comes from the engine thru the firewall to the heater control head.

Posted on Apr 21, 2013

Ad

4 Suggested Answers

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

Ad
tripletauto
  • 1450 Answers

SOURCE: Air conditioner blows through defrost vents

LOOK AT THE WHITE PLASTIC HOSE GOING TO THE RECIRC VACUUM ACTUATOR UNDER HOOD. THIS IS ON TOP OF A/C BOX BY RIGHT SIDE OF FIRE WALL YOU WILL FIND THIS HOSE IS STARTING TO COME APART REPAIR HOSE AND PROBLEM FIXED.

Posted on Sep 13, 2008

harley9701ha
  • 424 Answers

SOURCE: when I accelorate my ac vent goes from center

Check the white vacuum hose going to your recirculation door outside under the hood. It is located on the passenger side firewall . The hose becomed brittle and falls apart. I get small vacuum hose and cut into the wiring harness to locate a good section of hose.Put hose to vacuum motor. Good luck.

Posted on Aug 10, 2009

  • 65 Answers

SOURCE: I have a 2000 Ford Expedition with 4.6 litre

yes you have a vaccum leak some where. there is a vaccum cannister attached to the battery tray so it could have corroded something or you have a one way valve that clould be bad on the black vaccum hose coming out of the fire wall goin to the engine

Posted on May 10, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

No air is blowing through ront vents


It sound like the is a vacuum leak in the line that goes to the heater control head. Engine vacuum is used to move blend doors in the heater box. There is a vacuum line that goes from the engine through the firewall on the passenger side up to the heater control head. I would check and make sure you have vacuum there with the engine running.

Dec 20, 2012 | 2004 Ford Taurus

2 Answers

Defrost won't work


If the air does not blow out of the defrost vents, check the control and the vent door actuators for a vac leak.

Oct 08, 2012 | 1983 Buick Regal

1 Answer

Defroster vent will not open


You defroster may not be block the vent controls that switches vent position is vacuum controlled there is a hose from the intake manifold that goes under the dash to control the vent position,you may find a broken hose under the hood on the passenger side it a long palstic vacuum hose these have tendency to break just use a vacuum tube to repair it.

Mar 26, 2012 | 1992 Dodge Stealth

1 Answer

A/c goes to defrost on incline at high way speed, why and how do I fix it?


this vent is conytolled by vacuum and at high speed or going up an incline the vacuum drops nearly to 0 causing the vents to go to defrost

Aug 22, 2010 | 1999 Dodge Ram

1 Answer

I have a 2006 Ford Expedition. The Air


you have a vacuum loss to the ac control head, the motors that divert air are vacuum operated, if you loose vacuum the system goes to defrost for safety reasons, the vacuum comes from the engine, then goes o a plastic vacuum tank under the hook start there, it is a 3/16 id hose.

Aug 14, 2009 | Ford Expedition Cars & Trucks

2 Answers

Nothing blows out dash vents, but will blow out thru defrost nad floor vents on 1999 buick PA with dual auto air controls


check for a vacuum leak in the hose going to the heater controls. Goes from engine compartment, through firewall, into dash to control head. Also, has a vacuum storage canister under hood. When system fails, it defaults to defrost.

Jul 30, 2009 | 1999 Buick Park Avenue

1 Answer

Air goes straight to defrost


You have a vacuum leak! Defrost is the default position. You need to find vent vacuum lines on passenger side near firewall under hood or under dash.

Apr 12, 2009 | 2003 GMC Sierra 1500

1 Answer

Vent controls wont switch from defrost to any other selection replaced switch already I have a 2003 ford windstar, heat and cold air will only blow from the window defrost vents, any other selections...


You have a vacuum leak.Defrost is the default postion(no vacuum).
See if you can locate the small black vacuum line that goes inside the vehicle on the passenger side near the heater core. The trace it back,should see it going to a canister then to the intake manifold.Make sure it is not disconnected or broken somewhere.

Mar 02, 2009 | 2003 Ford Windstar

1 Answer

Air conditioner problems


You have a vacuum leak.Defrost is the default postion no vacuum.
Find the small black supply line under the hood on the passenger side where it goes thru the fire wall,trace it back you should see a plastic canister then from there it goes to a vacuum port on the intake.Should find a leak somewhere in this line.

Feb 19, 2009 | 2001 Ford Expedition

1 Answer

Switch on dash won't change direction of air to vent, etc.


You have a vacuum leak,defrost is the default postion,no vacuum to controls. Check the small black vacuum line that goes thru the firewall on the passenger side of the firewall and trace it back to see if you can locate a leak. It will go to a vacuum resivior then to the intake manifold.

Feb 15, 2009 | 1999 Ford F150 Regular Cab

Not finding what you are looking for?
1998 Ford Escort Logo

59 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

76109 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

fordexpert

Level 3 Expert

5520 Answers

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

Answer questions

Manuals & User Guides

Loading...