Question about 1998 Plymouth Voyager

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Windshield defrost what controls the wires at the bottom of windshield

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Rear windshield deforst has twon connections that are black wires. you will find these under the panel on the trunk door.

front windshield. the black stip the the wipers are on have the same black wires under it.

check fuses under dash and hood . check relays the clean contact points under these panels.
DO NOT BYPASS any power wires. the defrost has a low amp and voltage control.

Posted on Feb 16, 2009

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My 2007 chevy impala back windshield wont defrost at all...the front windshield defroster works perfectly..please help.


There is a female-male connector that connects the wire harness from engine to the cab located in passenger side kick panel. Find it and disconnect them. Look at each side to see if the connector is burnt. If it is it will need to be replaced or you can cut the rear defrost wire away from the connector and connect them direct. To much amperage causes these to burn out. If joining them direct do it cleanly and at your own risk. You can check the current at the rear defrost to see if this is the issue. front defrost is supplied by heated air. Rear is an electric coil on the window.

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How do I get the windshield & the windows defrosted? What buttons do I press?


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Where is the windshield washer motor located? Is it near the heater motor? I had mine fixed and now the heat comes out of the dash for the defroster


Windshield Washer Pump Removal & Installation To Remove:
  1. Remove the air cleaner assembly.
  2. Remove the bolts. windwash.gif

  3. Position the pump and reservoir aside.
  4. Disconnect the electrical connectors.
  5. Disconnect the washer hose.
  6. Remove the pump and reservoir.
  7. Remove the washer pump.
washpump.gif

WARNING
Windshield washer solution contains methanol which is poisonous. Observe all cautions and warnings indicated on label of washer solution container.
NOTE: Windshield washer fluid should be collected in a container after the windshield washer hose is disconnected.
To Install:
WARNING
Windshield washer solution contains methanol which is poisonous. Observe all cautions and warnings indicated on label of washer solution container.
  1. Install washer pump in reservoir.
  2. Install washer pump reservoir assembly.
  3. Connect washer hose.
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---
The windshield wiper fluid pump is located in the tank which is not in the heater motor or defroster area in the dash.

The defroster/heat control door is located in the dash board area:

Air Door Actuators, Cables or Motors Removal & Installation Air Inlet Door Vacuum Control Motor To Remove:
  1. Remove the instrument panel lower insulator cover.
  2. Disconnect the vacuum connector.
  3. Remove the control arm clip and the spring.
  4. Remove the nuts and the air inlet door vacuum control motor.
Air inlet door vacuum motor mounting screws for-10-00-245.gif

To Install:
  1. Install the vacuum motor on the mounting bracket.
  2. Connect the control arm and spring.
  3. Connect the vacuum hose to the vacuum motor.
  4. Install the lower instrument panel lower cover.
Floor Defrost Door Vacuum Control Motor To Remove:
  1. Disconnect the negative battery cable.
  2. Remove the left lower dash insulator panel and disconnect the lamp.
  3. Remove the two pin-type retainers and remove the fill panel.
  4. Remove the DLC mounting screws.
  5. Detach the vacuum line.
  6. Remove the lighting module.
  7. Remove the screws and the bracket.
  8. Remove the floor/defrost door vacuum control motor.
Floor/Defrost vacuum motor mounting screws for-10-00-246.gif

To Install:
  1. Connect the vacuum lines and install the floor/defrost vacuum motor.
  2. Install the bracket and lighting control module.
  3. Install the DLC bracket and mounting screws.
  4. Install the fill panel.
  5. Install the left lower dash insulator panel.
  6. Connect the negative battery cable.
Panel Door Vacuum Control Motor To Remove:
  1. Remove the instrument panel.
  2. Reach through the door opening and remove the pin.
  3. Disconnect the panel door vacuum control motor vacuum line.
  4. Remove the screws and remove the panel door vacuum control motor.
To Install:
  1. Install the panel door vacuum motor.
  2. Connect the vacuum line to the panel door motor.
  3. Reach through the opening and install the pin to the linkage.
  4. Install the instrument panel.
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I think I'm going to double face tape a small strip of black plastic above the current vents to deflect some of the warm air to the lower edge of the windshield.
If anyone else has a better fix please post.
thanks,
Freexing in Syracuse!

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1 Answer

Defroster won't blow air next to windshield


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Hope this helps.

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It more and likely is the servo motor (s) that are the problem, when you turn hot to cold and defrost they cycle the vents in conjuction and are a common failure on this model.
The ones that fail are accessible if you remove the right underscuttle panel and the glovebox.
Black motors with a double wire, usually have a red connector on the end.
JPTCAT

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