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heat/ac issue

Discussion in 'Interior' started by 2515x3jj, Dec 5, 2019.

  1. 2515x3jj

    2515x3jj Junior Member

    Age:
    52
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    Joined:
    Aug 27, 2019
    Location:
    Newport, Pa
    Ram Year:
    95/03
    Engine:
    5.9/5.7
    Hello to all and thks for looking at my post. My issue is the ac/heat blows out the defrost on acceleration and when I let off it goes back to the selected position. I can hear a door shut when letting off. Is there anyone who experienced this issue. And what was your fix. I'm putting a heater core in this weekend and this would be the time to check for the problem. Thankyou
     
  2. Mop

    Mop Member

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    21
    Joined:
    Aug 5, 2017
    Ram Year:
    1999
    Engine:
    360
    You'll find other threads on this. It's a vacuum leak. Look at the thin, black hard plastic tubing on the firewall, passenger side. The line probably has a crack, or the check valve is bad.
    My line was cracked, and I cut it off, added 3mm rubber tubing onto the existing line. Simple, cheap fix.
     

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