Erratic idle

Discussion in 'General Motoring' started by SHAWN, Apr 5, 2005.

  1. SHAWN

    SHAWN Guest

    Hi all!

    I just bought a 1998 Elantra from my sister in-law. It runs rough at idle,
    even sometimes sticks at 3K rpm.
    It also has some rough running when you let off the gas a bit then
    accelerate again.
    Do you know what could be wrong? I have only messed with carbed engines.
    So my terminology may be wrong here.
    Could it be the throttle position sensor? There so many freaking sensor
    thingies, I have NFI. :)
    Please help! Thanks!

    1989 Hyundai Elantra
    1978 Ford Fairmont, L6
    SHAWN, Apr 5, 2005
  2. SHAWN

    hyundaitech Guest

    The tps is one possibility. Is the check enging lamp on? If so, the first
    thing to do is retrieve the codes. It also sounds like you may have a
    misfire issue.
    hyundaitech, Apr 5, 2005
  3. SHAWN

    SHAWN Guest

    The light isnt on, but I did replace the TPS and it runs 3746574 times
    better. I will replace the spark plugs and get new wires for it, which
    might help the misfire(since it isnt perfectly running yet). I didnt know
    it could pull that good. :)
    The thing that sucks is the price on some of these stupid ass sensors. Its
    not like my old '78 ford where I can afford to replace stuff since its dirt
    cheap. ($85 for whole new cap/rotor/distributor/ignition module)

    You say to get retrieve codes. In the future if something is wrong(or could
    be still) where would I find a list of codes?
    I have seen those code readers at autozone for like $99.00 or so. Are they
    any good?

    1998 Hyundai Elantra
    1978 Ford Fairmont, L6
    SHAWN, Apr 6, 2005
  4. SHAWN

    LameBMX Guest

    well man autozone will read the codes for free ... and thier obdII
    reader has sort descriptions about the problem ...
    and more information about the specific codes can be found at
    ^^ hyundai webtch site you will see mentioned in here
    hope this helps for the future ... btw have i said how much i love both
    the hyundaitech guy who answers ?'s here ... and that webtech site

    LameBMX, Apr 6, 2005
  5. SHAWN

    hyundaitech Guest

    I had a Fairmont with the 200 once. Reman transmission installed for $400.
    Couldn't beat it.
    hyundaitech, Apr 6, 2005
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.