Rough idle

Discussion in '4.0 Engine' started by James226, Jun 7, 2011.

  1. James226

    James226 New Member

    I have a 2003 4.0. just today it started to idle a little rough. it feels like it is misfireing but is not throwing any codes. if i rev the engine up it quits but at idle it intermittently feels like its ready to quit running.
  2. Ranger Forum Sign Up!

    Join Today - It's Totally Free!

    Are you a Ford Ranger fan? If so we invite you to join our community and see what it has to offer. Our site is specifically designed for you and it's a great place for Ford Ranger Fans to meet online.
    Once you join you'll be able to post messages, upload pictures of your Ford, and have a great time with other Ranger fans. Whether your an old timer or just bought your Ford you'll find that Ranger Forum is a great community to join. Best of all it's totally free!

    Join Today! JOIN FOR FREE

  3. when was the last time you did a tune up?
    how many miles on it? have you used seafoam yet?
    clean maff sensor , air filter, etc...
  4. Hooligan

    Hooligan Rangerholic!!

    ^^ that and clean the throttle body and Idle Air Control valve. How many miles are on it and when was the last tune up?

Share This Page