Page 1 of 3 123 LastLast
Results 1 to 15 of 32

Thread: Rough idle and some misses

  1. #1
    Join Date
    Dec 2013
    Location
    Minnesota
    Posts
    21

    Default Rough idle and some misses

    Alright so i bought my xj on Tuesday was running awesome no problems or mishaps. Then yesterday out of no where it started idling low and missing in cylinders 1 and 2. So we tested spark was good replaced all the plugs cleaned the throttle body battery posts and cables. Still no change so any ideas what i should change check or..? Anything would be helpful thanks in advance.

  2. #2
    Join Date
    Jan 2012
    Location
    Houston
    Posts
    15,968

    Default Re: Rough idle and some misses

    Do you have any check engine codes?

  3. #3
    Join Date
    Dec 2013
    Location
    Minnesota
    Posts
    21

    Default Re: Rough idle and some misses

    Only for the misses in cylinders 1&2

    Sent from my SAMSUNG-SGH-I717 using Tapatalk

  4. #4
    nickyg's Avatar
    nickyg is offline Level: Uber Jeep Cherokee Trailer Queen
    Join Date
    Feb 2013
    Location
    NC
    Posts
    2,075

    Default Re: Rough idle and some misses

    Did you check coil for cracks, distributor cap, rotor, coil wire.

    start at the coil and go over every inch.
    One more part and I'll have a new Jeep

  5. #5
    Join Date
    Jan 2012
    Location
    Houston
    Posts
    15,968

    Default Re: Rough idle and some misses

    injectors for those cylinders clogged?

  6. #6
    Join Date
    Dec 2013
    Location
    Minnesota
    Posts
    21

    Default Re: Rough idle and some misses

    Haven't checked the coil yet. I don't believe the injectors are clogged how would i clean them either way?

    Sent from my SAMSUNG-SGH-I717 using Tapatalk

  7. #7
    Join Date
    Jan 2012
    Location
    Houston
    Posts
    15,968

    Default Re: Rough idle and some misses

    I'm hoping it's not loss of compression in there. You could remove the injector and try to clean them out with a spray like throttle body cleaner. Or you may have to get new injectors if they are indeed the culprit

  8. #8
    Join Date
    Apr 2009
    Location
    Salem Va.
    Posts
    891

    Default Re: Rough idle and some misses

    Swap injectors 1&2 with 5&6 to see if codes change. I had a miss that slowly got worse and it showed miss in cyl 6. Replaced plugs,wires, cap,rotor & did a compression check. Had a bad injector on #6.


    Sent from my XT907 using Tapatalk

  9. #9
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Rough idle and some misses

    Did you put gas in the tank in between running well and not?
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  10. #10
    Join Date
    Dec 2013
    Location
    Minnesota
    Posts
    21

    Default Re: Rough idle and some misses

    I did actually

    Sent from my SAMSUNG-SGH-I717 using Tapatalk

  11. #11
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: Rough idle and some misses

    I am going to suggest you have some marginal injectors. Run this tank out and then fill with premium. That will probably fix it. But for a permanent fix you will have to replace those injectors
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  12. #12
    Join Date
    May 2010
    Location
    New Caney, TX
    Posts
    3,582

    Default Re: Rough idle and some misses

    Before replacing injectors do a compression check.

    Sent from my SPH-L300 using Tapatalk 2

  13. #13
    Join Date
    Dec 2013
    Location
    Minnesota
    Posts
    21

    Default Re: Rough idle and some misses

    Planning on a compression check asap.

    Sent from my SAMSUNG-SGH-I717 using Tapatalk

  14. #14
    Join Date
    Oct 2012
    Location
    the wild north
    Posts
    302

    Default Re: Rough idle and some misses

    I am thinking it might be low blinker fluid and bad muffler belt. Get them check asap!

    We did take the TB off and cleaned the TB that did not seem to help much.

  15. #15
    Join Date
    Dec 2013
    Location
    Minnesota
    Posts
    21

    Default Re: Rough idle and some misses

    Haven't been able to do a compression test yet but how likely is it to be heads if its not using any coolant or oil?

    Sent from my SAMSUNG-SGH-I717 using Tapatalk

Page 1 of 3 123 LastLast

Similar Threads

  1. No cure for Rough idle..
    By SeniorGustas in forum General Talk
    Replies: 14
    Last Post: 05-05-2013, 12:22 PM
  2. Rough idle/stalling
    By 907_jeep in forum OEM/Factory
    Replies: 14
    Last Post: 04-15-2013, 05:59 PM
  3. Rough idle after startup
    By muddeprived in forum OEM/Factory
    Replies: 16
    Last Post: 10-28-2012, 10:25 AM
  4. I have a rough idle, what can I do to fix it?
    By islandbum in forum OEM/Factory
    Replies: 4
    Last Post: 05-03-2011, 08:13 PM
  5. Rough idle
    By greenchevy in forum OEM/Factory
    Replies: 20
    Last Post: 03-29-2011, 08:23 AM

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •