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    1. W-body.com Announcements and News

      Updates and information regarding the W-body.com website.

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    2. New Member Introductions

      Welcome to our community! Introduce yourself to everyone here.

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  2. General W-Body Discussion

    1. FAQs and Technical Information

      'How-To' articles and basic information for those who are new to the W-Body platform.

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    2. General

      General W-Body Discussion

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    3. Powertrain

      Engine and Transmission Maintenance, Repair, and Performance

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    4. PCM Tuning

      Looking for tuning advice or need help reading a scan? Need help getting your tuning software up and running? This is the place for you.

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    5. Brakes/Suspension/Steering/Wheels/Tires

      This is the place to talk about brakes, suspension, lowering, wheels, tires, basically everything that affects your car's ride and handling.

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    6. Car Audio

      Need help putting a system into your W-body? Talk about it here!

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    7. Appearance/Car Care

      Body work, paint care, interior/exterior cleaning, detailing tips and tricks.

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  3. Specialty Forums

    1. Turbo Grand Prix

      This forum is for enthusiasts of the rare 1989-90 Pontiac Grand Prix Turbo.

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    2. Cutlass Supreme Convertible

      A forum for information and discussion about the Oldsmobile Cutlass Supreme Convertible

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  • Posts

    • pwmin
      1995 Monte Carlo No Heat

      By pwmin · Posted

      I haven't replaced anything yet.  TBH, I don't have much motivation right now with it getting dark early and being cold.  I'm hoping to look at it Sunday since I'll actually have a whole day to myself (I think)
    • ron350
      1995 Monte Carlo No Heat

      By ron350 · Posted

      That gear drive actuator you replaced controls hot to cold blend. There is a vacuum switch behind the glove box that sends vacuum to separate vacuum doors to control what vent the air comes from.   That black plastic vacuum line that powers the vacuum doors goes through the fire wall between the master cylinder and the strut tower.   This is what the vacuum door controller looks like.   https://www.rockauto.com/en/moreinfo.php?pk=14268801&cc=1021374&pt=7036&jsn=531
    • pwmin
      1995 Monte Carlo No Heat

      By pwmin · Posted

      I redid all the vacuum lines a little while ago because the turbo PCV wasn't set up properly.  Maybe I messed something up.  I think the vacuum ball is long gone due to packaging issues, but it was working at one time.
    • ron350
      1995 Monte Carlo No Heat

      By ron350 · Posted

      Have you checked the vacuum line that supplys vacuum to the HVAC vacuum switch behind the glove box?  On my 96 Regal acid from the battery ate the plastic vacuum line that runs under the battery tray to the vacuum ball.  The vacuum ball is under the battery tray up inside the fender. The plastic line that connects the vacuum ball to the vacuum "T" breaks and this causes all HVAC air to blow out of the defrost vents. When this happened to me I replaced the brittle plastic vacuum line under the battery tray with rubber vacuum hose.
    • 55trucker
      1995 Monte Carlo No Heat

      By 55trucker · Posted

      You should be able to get at both sides of the heater core...return is at the front of the engine, that long steel piping that follows along the right side frame rail that sweeps upwards to the coolant pump manifold, the inlet side is right beside the brake vacuum booster, a short hose that  passes overtop of the master cyl reservoir slipping over the steel supply pipe from the bottom of the thermostat housing. 
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