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Check engine light?

Discussion in 'Wrangler YJ (1986-1995)' started by PatCarter, Jul 5, 2019.

  1. Jul 5, 2019 at 9:32 AM
    #1
    PatCarter

    #1
    PatCarter [OP] New Member

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    94 yj
    2-1/2” lift, on 31’s Not much
    Good morning all. New member here. My 94 yj runs strong even with 206,000 miles, lately I’ve been getting a check engine light after driving only short distances. All fluids are good, nothing over heating, gauges are all good. What else should I be looking for? All advice welcome, I’m no mechanic. Thank you.

    9232AD73-7D37-45F5-8FF4-902486146D00.jpg
     
    PatCarter, Jul 5, 2019
    #1
    JKBob 25 likes this.
  2. Jul 5, 2019 at 10:21 AM
    #2
    Awrench

    #2
    Awrench Well-Known Member

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    the CEL (ck eng lite) is your friend, there to help.
    Do not erase code or remove battery cables - not yet.

    We need to know what the code is - SO try a FREE scan at many auto part stores, auto zone, advance, orielys et al. Copy down all codes and post them here.

    TIP- do not! buy a component solely on their being a code.

    Did I mention a FREE scan to start.

    PS- add engine size and trans, also any mods to engine.
     
    Awrench, Jul 5, 2019
    #2
  3. Jul 5, 2019 at 10:42 AM
    #3
    Jim Beam

    #3
    Jim Beam Well-Known Member

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    1986 CJ7
    Fuel Injection, Dana 44s, T18, 4.10s w/lockers
    You can eventually buy a simple code reader and check codes on your own. If you don't erase the code or remove a battery cable it will stay there. Check engine codes will not always tell you what componet is bad, just tell you where the problem is coming from. If you take it in to a local garage, they can hook up a scanner and read live data that your engine is producing. It can really get technical.
     
    Jim Beam, Jul 5, 2019
    #3
  4. Jul 5, 2019 at 1:02 PM
    #4
    PatCarter

    #4
    PatCarter [OP] New Member

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    Male
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    94 yj
    2-1/2” lift, on 31’s Not much
    Took it to Oriely’s, they can’t test anything older than 96. So, still no codes. Guess I’ll look into purchasing a scanner or taking it in. Was hoping to save money.
     
    PatCarter, Jul 5, 2019
    #4
  5. Jul 5, 2019 at 2:20 PM
    #5
    Jim Beam

    #5
    Jim Beam Well-Known Member

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    First Name:
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    1986 CJ7
    Fuel Injection, Dana 44s, T18, 4.10s w/lockers
    The professional scanners that I have seen go for over 10 grand as I recall:https://www.bing.com/images/search?view=detailV2&id=E5D6758706E76F9657C883D888D1DC0F2569BBE4&thid=OIP.QU5eBCEbgklgVnkGLEonrwHaHa&mediaurl=http://monsterpawn.com/ebay/06/140604mb_a1.jpg&exph=1967&expw=1967&q=snap+on+automotive+computer+scanner&selectedindex=0&qpvt=snap+on+automotive+computer+scanner&ajaxhist=0&vt=0&eim=2,6. There are some made by Actron:https://www.amazon.com/Actron-CP9670-AUTOSCANNER-Trilingual-Screen/dp/B011P30EMO/ref=asc_df_B011P30EMO/?hvadid=%7Bcreative%7D&hvpos=%7Badposition%7D&hvnetw=o&hvrand=%7Brandom%7D&hvpone=&hvptwo=&hvqmt=e&hvdev=c&hvdvcmdl=%7Bdevicemodel%7D&hvlocint=&hvlocphy=&hvtargid=pla-4584413735846760&psc=1, Some can even read live data and are a lot cheaper. I have a cheapie that I got for around $60. Shop around and take your pick.
     
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    Jim Beam, Jul 5, 2019
    #5
  6. Jul 5, 2019 at 2:26 PM
    #6
    Awrench

    #6
    Awrench Well-Known Member

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    Awrench, Jul 5, 2019
    #6
    aggrex and JKBob 25 like this.
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