1998 Plymouth Voyager NO heat

Tiny
KDORE
  • MEMBER
  • 1998 PLYMOUTH VOYAGER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 29,800 MILES
Hello, I have a 98 Plymouth Grand Voyager during the summer the battery drained low but after a charge did not need replacing. The lights on the heater/AC control panel flashed and I was able to run the recalibration but the end result was no heat from the dash when set to any of the heat options. When the calibration is run though Heat does come through the dash when it cycles through all the settings. Once the calibration is run though the top button flashes once then the button directly below flashes 3 times, this does not stop until I hit the top button. Please help
Sunday, February 10th, 2008 AT 3:13 PM

4 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,251 POSTS
Sounds like either a vacuum leak, servo motor on the plenum, or the control head on the ac unit.
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Sunday, February 10th, 2008 AT 4:11 PM
Tiny
KDORE
  • MEMBER
  • 3 POSTS
How can I test for each, short of bringing my van into a shop?
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Monday, February 11th, 2008 AT 7:18 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,251 POSTS
Stick your head up under the dash on the passenger side, locate the servo's there are two maybe three, pull the vacuum hose off and rotate the control knob, you should get vacuum an one of the settings, do this for all of the servo's. If you get no vac, open the hood and trace the feed line that runs into the firwall, this one supplies the system. Make sure it has vacuum!
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Tuesday, February 12th, 2008 AT 8:14 AM
Tiny
KDORE
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Thanks, I will try that and post my success or failure. The weather up here is terrible right now and driving without heat is not the safest.

Keith
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Tuesday, February 12th, 2008 AT 11:15 PM

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