95 Chrysler 3.5 rough idle

Discussion in 'General Motoring' started by Ed M, Apr 5, 2004.

  1. Ed M

    Ed M Guest

    Started rough idling a couple days ago, engine RPM hot idle in gear seems to
    be about 100RPM higher than normal. otherwise it runs well. Only codes
    showing are 12 and 77. Engine has 67K miles. Was supposedly tuned up 10K
    miles ago (when we bought it). Any ideas?
     
    Ed M, Apr 5, 2004
    #1
  2. Ed M

    N.Cass Guest

    A very popular problem with these engines is the intake manifold gasket
    develops a vaccume leak causing a rough idle. I think the gasket kit is
    fairly inexpensive and the job isn't too terrible. Has the fuel filter
    been changed when it was tuned up? Were the dual throttle bodies cleaned
    out? These items would be a start in your diagnosing.
     
    N.Cass, Apr 6, 2004
    #2
  3. Ed M

    Steve Guest

    I agree- the faster than normal idle indicates a vacuum leak.

    Cheap is right- about $5 at NAPA: http://tinyurl.com/2g9f7
     
    Steve, Apr 6, 2004
    #3
  4. Ed M

    Ed M Guest

    Thanks to those who replied.

    After checking the usual, plugs, wires and for vacuum leaks I went ahead and
    changed the intake gasket. The miss at idle appears to be gone, the idle
    speed is back at its usual RPM. Exhaust flow is smooth.
     
    Ed M, Apr 7, 2004
    #4
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.
Similar Threads

  1. Rough Idle on 2004 Town & Country

  2. Rough Idle 2000 Dodge Stratus 2.5

  3. Rough Engine idle - 3.5 - 97 LHS

  4. 95 Caravan 3.3 Rough idle

  5. 1990 Dodge Grand Caravan 3.3l V6 Stalling/rough idle

  6. Caravan rough idle

  7. 96 Stratus 2.0/5spd Hesitation/Rough Idle

  8. Rough Idle on 2000 Chrysler Cirrus ...

Loading...