Question about 1997 Chevrolet Astro

2 Answers

Where does 97 astro van get vacuum from (or does it) to move dash selector for def/floor/ vent. I have one that is stuck on def. only no matter where u move selector

Posted by on

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Check the engine compartment for a thin hard plastic line. This line runs across the fire wall with the wiring harness. These lines are known to be very brittle and brake easy. This line will run into the the cabin trough the fire wall with the harness as well. I've not seen then break inside yet. It comes in the firewall runs behind the gauge cluster to the heat and AC controls. From the firewall back to the heater. Follow the thin line back to the top of the heater box. On top of the heater in the engine compartment there is a vacume controled valve to shut off the hot water from entering the heater element. You can follow the thin line all the way to a canister located under the heater box it's self. From this canister follow a rubber line to the back of the engine to where it conects to the intake manifold. Check all these lines and hoses for any cracked or broken connections. All these can be replaces easily and at a very low cost. I replaced the thin plastic line with the same ID. Usually you'll find the brake in the plastic line on the firewall some where.

Posted on Feb 06, 2013

  • Donald Waldrop Feb 06, 2013

    Check the engine compartment for a thin hard plastic line. This line runs across the fire wall with the wiring harness. These lines are known to be very brittle and brake easy. This line will run into the the cabin trough the fire wall with the harness as well. I've not seen then break inside yet. It comes in the firewall runs behind the gauge cluster to the heat and AC controls. From the firewall back to the heater. Follow the thin line back to the top of the heater box. On top of the heater in the engine compartment there is a vacume controled valve to shut off the hot water from entering the heater element. You can follow the thin line all the way to a canister located under the heater box it's self. From this canister follow a rubber line to the back of the engine to where it conects to the intake manifold. Check all these lines and hoses for any cracked or broken connections. All these can be replaces easily and at a very low cost. I replaced the thin plastic line with the same ID in a rubber hose. Usually you'll find the brake in the plastic line on the firewall some where.

×

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Sergeant:

    An expert that hasĀ over 500 points.

    Champion:

    An expert who has answered 200 questions.

  • Expert
  • 216 Answers

Check and see if you are getting vaccum to your vaccum ball under the hood.if you are then follow the vaccum line that goes to the inside of the vehicle until you find the vaccum leak.

Posted on Jan 24, 2011

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:

2 Answers

Air will not blow to windshield or floor only front vents. whats the matter?


Always give details about your vehicle. Yr. make, model etc. Some vehicles use vacuum to control the HVAC doors. Some use electric motors. Could be a leaky vacuum switch, actuator, bad motor. Broken door.

Looks like other people have had your problem. Have a look here. http://repairpal.com/heating-and-ac-temperature-and-air-delivery-mode-door-actuators-may-fail-266

Jan 22, 2016 | Cars & Trucks

1 Answer

97 cavalier heater control only comes out vents


check the vacuum line going into the firewall near the blower motor for the blend door. line may have dislodged or possibly broke from vacuum source.

Feb 02, 2013 | Chevrolet Cavalier Cars & Trucks

1 Answer

92 Mazda Navajo a/c comes out defroster and floor vents only, doesnt matter where the selector switch is set. Help!!


It's most likely a vacuum line, look under your hood (close to the cowl panel) for a disconnected, cracked or broken vacuum line.

In some rear cases, it could be the vacuum switch (in dash). Or vacuum diaphragm (under dash).

Hope this helps you ???

Jul 21, 2011 | 1992 Mazda Navajo

1 Answer

Climate Control - Heat and cool work fine. Air flow is directed to defrost /floor. No indication (Sound or sight) that the vacuum diaphrams are being activated. The display on the dash matches the...


Does your vehicle have manual or automatic climate control ? You system is stuck in floor an defrost mode ?

03 mercury grand marquis hvac air flow .-13qahwfdndst2y1hypmr2cdq-4-0.gif Item Part Number Description 1 18A318 Vacuum control motor-floor/defrost door 2 - Defrost air flow 3 18A478 Floor/defrost door 4 18476 Heater core 5 19860 Evaporator core 6 19805 Blower motor 7 - Outside air inlet 8 19A813 Air inlet door 9 18A318 Vacuum control motor-air inlet door 10 - Recirculated air inlet 11 18B545 Temperature blend door 12 18A559 Panel door 13 - Panel air flow 14 18A318 Vacuum control motor-panel door 15 - Floor air flow 16 - Vacuum from the engine intake manifold 17 19A563 A/C vacuum check valve 18 19A566 Vacuum reservoir tank and bracket 19 19980 EATC control
Pull the control panel an check for vacuum

vacuum lines hvac 03 grand marquis-13qahwfdndst2y1hypmr2cdq-4-2.gif Item Part Number Description 1 White Air inlet door 2 Yellow Floor/defrost door 3 Red Floor door 4 Blue Panel door 5 Black Source vacuum 6 - Not used


VACUUM APPLICATIONS CHART-ELECTRONIC AUTOMATIC TEMPERATURE CONTROL Switch Port Vacuum Harness Hose Color Func- tion Manual Override Selector Buttons OFF MAX A/C NORM A/C VENT FLOOR FLOOR/ DEF DEF 1 White Air inlet 2 Yellow Floor/ panel (partial) 3 Red Full floor 4 Blue Panel 5 Black
Source

May 21, 2017 | 2003 Mercury Grand Marquis

1 Answer

2005 Astro Van AC only blowes through windshield defrost vent


The mode doors in the dash are powered by engine vacuum, if vacuum is missing the default setting is the defrost vent. Look under the hood near the firewall for a disconnected vacuum line.

Jun 13, 2010 | 2005 Chevrolet Astro

1 Answer

HVAC vent selector does not function. Air flow is


THe blend door seems to be stuck. When you change settings from defrost to floor air or, vent, the blend door opens and closes directing the air to the place you want it to go to. I have had some success spraying a lubricating oil such as WD40 under the dash on the blend door. You need to get under the dash with a flashlight to locate it. It looks like a flap. Spray it with a couple of shots of the WD40. Go easy on the spraying as you may be inhaling the fumes. Keep the doors and windows open to minimize the fumes. Wait about 1/2 hour and try the A/C functions. (defrost, floor, vent air)

Mar 09, 2009 | 2002 Buick Rendezvous

1 Answer

Fan selector does not work


there is a vacuum leak in the vent system... look under the dash and you will see the vacuum hoses ..listen for a leak... also near the brake booster in the engine compartment you will see a plastic cannister about the size of a film cannister... most likely white... that may be unhooked or need replacement.

Robert

Please take a moment to rate this solution.. thanks

Jan 28, 2009 | 2001 Jeep Grand Cherokee

1 Answer

Heater vent doesn't shift to all positions


Sounds like you have a vacuum leak, those controls are are accuated by vacuum.

Dec 02, 2008 | 1995 Jeep Grand Cherokee

2 Answers

2001 ASTRO VAN AIR CONDITIONING


i suspect the vents are controlled by vacuum and are not opening due to a vacuum leak.

Robert

Sep 01, 2008 | 2000 Chevrolet Astro

Not finding what you are looking for?
1997 Chevrolet Astro Logo

206 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts

yadayada
yadayada

Level 3 Expert

74896 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22095 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

7688 Answers

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

Answer questions

Manuals & User Guides

Loading...