2001 PT Cruiser - Hissing engine

Discussion in 'PT Cruiser' started by Just Me (remove, May 18, 2008.

  1. I hear a weird hiss when the engine is running. It' like a constant
    leaking of air (or sucking in of air.) I can't seem to directionally
    locate where it is coming from in the engine compartment.

    It drives fine but that noise is not right and sounds like it's
    something horrible waiting to happen.

    It stops when the engine stops and is a constant hiss like a loud,
    leaking tire.

    Any thoughts?
    Just Me (remove, May 18, 2008
  2. Just Me (remove

    Steve B. Guest

    Sounds like a vacuum leak. There are several vacuum hoses under the
    hood. Check them all for leaks and cracks.

    Steve B.
    Steve B., May 18, 2008
  3. Yep.

    PCV hose is the culprit. Easy replace, but no one carries it. It's
    1/2" on one end and 3/8" on the other with a 180 degree bend. What a
    mess. I tried a 1/2" fuel hose but looks like it kinks too much to be
    of use. Hopefully the dealer won't gouge me tomorrow to buy one.
    Just Me (remove, May 18, 2008
  4. Just put a loop in it, there's no law that says the PVC host must only
    be 3 inches long. The automakers use those silly formed hoses because
    they make the inside of the engine compartment look "cleaner" which is
    important for new car sales when you got boneheads looking under
    the hood on the new car lot, when deciding if to buy a car.

    Ted Mittelstaedt, May 19, 2008
  5. Just Me (remove

    rfeirste Guest

    Lose air filter box; check the clips.
    rfeirste, May 19, 2008
  6. Just Me (remove

    Steve Guest

    Disconnected vacuum hose somewhere.
    Steve, May 20, 2008
  7. Yes plus there are those new steel backed spring contour support thingies
    for heater hoses, perhaps there is one for the PCV hose where you slip it
    over the hose and bend it and the spring keeps the hose from kinking and the
    steel plate keeps the hose bent in the shape you desire.
    Phillip Mcracken, May 21, 2008
  8. Phillip Mcracken, May 21, 2008
  9. I decided to hit the dealer for the exact hose. $20 later I slipped it
    on and things are back to normal. No hissing.

    I took the time to top off the oil and water, also did the tires up.
    Haven't driven it much yet but it's working as normal.

    I am going to see if this maintenance helps my MPG a bit. It has been
    horrendous lately unless on a long trip. My Mom's 2007 PT got 33mpg on
    the highway running a long way non-stop. I only wish my 2001 would come
    close to that. I got 22mpg on a full tank trip.
    Just Me (remove, May 21, 2008
Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.