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Rough idle after restarting Cherokee

Discussion in 'Cherokee' started by Mosscountry4x4, Dec 14, 2017.

  1. Dec 14, 2017 at 7:17 AM
    #1
    Mosscountry4x4

    Mosscountry4x4 [OP] Member

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    First Name:
    Brandy
    Vehicle:
    99 Jeep Cherokee
    2in lift, fishing pole rack on inside.
    I am about to blow up my Jeep.
    Please HELP.
    I had to replace the torque converter, flywheel, starter, CSP, TPS, Idle air control.
    I can start my Jeep and it will purr like a kitten, shut it off and go to start her back up and she idles really rough.
    Does anyone have any ideas.
     
  2. Dec 14, 2017 at 9:27 AM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    That's a sign of an ignition coil issue.
     
    Bob and Mosscountry4x4[OP] like this.
  3. Dec 14, 2017 at 10:32 AM
    #3
    Southeast Overland

    Southeast Overland Well-Known Member

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    Seneca, South Carolina
    Vehicle:
    1990 Yj, 1994 Yj, 1995 Xj, 1998 Xj, 1990 Xj
    Can you give us a bit more info? Stuff like year, how long you leave the Jeep running, temps ETC. The first thing that comes to mind is fuel rail heat soak. Try letting it run turning it off and leaving the hood open while its off to let heat escape and see what that does.

    ~Jeff
     
  4. Dec 14, 2017 at 1:06 PM
    #4
    OFFGRID

    OFFGRID Well-Known Member

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    Houston
    Vehicle:
    1979 Jeep CJ7, 258, TH350, NP208
    Howell fuel injection, header, HEI distributor, TH350, NP208, SOA lift with YJ springs in the front & GW springs in the Rear. AMC20 with G2 1 piece chromos trussed, Dana 30 with G2 chromos and 760x ujoints and MM Stainless Hubs, Geared 4.56. Tom Woods shafts, Metal cloaks, Caged, 37" Toyo MTs.
    Are you getting any codes? (check engine light on?)
     
    Bob likes this.
  5. Dec 14, 2017 at 1:22 PM
    #5
    Mosscountry4x4

    Mosscountry4x4 [OP] Member

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    Brandy
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    99 Jeep Cherokee
    2in lift, fishing pole rack on inside.
    It will throw a code and then it will go away.
     
  6. Dec 14, 2017 at 1:52 PM
    #6
    Prerunner1982

    Prerunner1982 Well-Known Member

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    It's potentially still saved. A cheap OBD2 bluetooth dongle is an excellent tool to keep around. I keep mine plugged in 24/7 and with the torque app can see what the engine and sensors are doing real time. It can scan and clear codes as well.
     
  7. Dec 14, 2017 at 3:36 PM
    #7
    Mosscountry4x4

    Mosscountry4x4 [OP] Member

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    Female
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    Brandy
    Vehicle:
    99 Jeep Cherokee
    2in lift, fishing pole rack on inside.
    Thank you for all of everyonea help. It was a bad crankshaft position sensor.
     
    aggrex and chris4x4 like this.
  8. Dec 14, 2017 at 4:07 PM
    #8
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    man...I was way off.....:anonymous:
     
  9. Dec 14, 2017 at 4:22 PM
    #9
    Mosscountry4x4

    Mosscountry4x4 [OP] Member

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    99 Jeep Cherokee
    2in lift, fishing pole rack on inside.
    Thats cool. I appreciate everyone's input.
     
  10. Dec 14, 2017 at 6:51 PM
    #10
    JKBob 25

    JKBob 25 Well-Known Member

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    Edit. :anonymous:. Me too. But hey. Good you found the fix.
     
    Mosscountry4x4[OP] likes this.
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