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My 2000 Grand Cherokee keeps losing power

Discussion in 'Grand Cherokee' started by Burtsjeep, Sep 15, 2018.

  1. Sep 15, 2018 at 9:01 AM
    #1
    Burtsjeep

    #1
    Burtsjeep [OP] New Member

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    i have a 2000 Jeep Grand Cherokee 4.0l. Last week my Jeep lost power driving down the road first the engine cut out then the power steering then the headlights. I had a bad battery which lead to a bad alternator. I replaced both the battery and the alternator yesterday and it was running great then this morning driving back from the store and it loses power again in the same order as the last time,engine,power steering then headlights. Someone help not sure what the problem is now.
     
    Burtsjeep, Sep 15, 2018
    #1
  2. Sep 15, 2018 at 11:01 AM
    #2
    Awrench

    #2
    Awrench Well-Known Member

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    I suspect that the CEL check engine light is not working- correct?
    It should come at every start @2seconds then go out - let me know.

    Lets do some BASICS...
    check for codes - scanner or key on off check for codes...

    quick and easy test, engine OFF what is the voltage at battery?
    try to start if it starts recheck voltage at battery WE want more volts than when we checked eng off .

    NO start, suggest a recharge, or swap in a known good battery, with battery charging what is the voltage at the wiring at the ALT, larger wire RED should be same as battery voltage - see attachment.

    1- let us know about CEL on or off, and if works at every start.
    2) check battery voltage eng off.
    3) check battery voltage eng on post results...
    4) Using diagram ck fuses and RED wire at back of alt for 12v
     

    Attached Files:

    Awrench, Sep 15, 2018
    #2
    JKBob 25 and Bob like this.
  3. Sep 15, 2018 at 5:44 PM
    #3
    chris4x4

    #3
    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    Welcome aboard!
     
    chris4x4, Sep 15, 2018
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  4. Sep 15, 2018 at 7:41 PM
    #4
    aggrex

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    aggrex Well-Known Member

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    DE
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    Tuffy>AEV>TTO>JW>STech>EVOcage>MagnaFlow>SpiderTrax>RockHard>TF>SpringTail>67design>Bolt>GPCA>Curt>
    Welcome! Fill in some of the details that @Awrench requested. Does the Jeep start with a jump? Did the headlights start to dim before the engine stalls?
     
    aggrex, Sep 15, 2018
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  5. Sep 17, 2018 at 11:15 AM
    #5
    Burtsjeep

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    Burtsjeep [OP] New Member

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    It has a new battery and after I towed it home again and I let it sit for a couple of hours it started right back up. It stalled once then I started it back up and let it idle for a good 20 min and it never stalled again. I’m hesitant to drive on the road again.
     
    Burtsjeep, Sep 17, 2018
    #5
  6. Sep 17, 2018 at 5:48 PM
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    boondoc89

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    boondoc89 Well-Known Member

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    Have you checked your battery terminal connections??
     
    boondoc89, Sep 17, 2018
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    JKBob 25 likes this.
  7. Sep 21, 2018 at 7:10 PM
    #7
    Burtsjeep

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    Burtsjeep [OP] New Member

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    Yes battery terminals are clean.Jeep starts just fine ideals fine but stalls while I’m driving it.
     
    Burtsjeep, Sep 21, 2018
    #7
  8. Sep 22, 2018 at 7:49 AM
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    Awrench

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    Awrench Well-Known Member

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    upload_2018-9-22_10-42-22.jpgupload_2018-9-22_10-47-20.jpg

    in case 1st post was to complicated
     
    Awrench, Sep 22, 2018
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    aggrex likes this.
  9. Sep 22, 2018 at 11:49 AM
    #9
    chris4x4

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    chris4x4 With sufficient thrust, pigs fly just fine Moderator

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    Whats with this post?
     
    chris4x4, Sep 22, 2018
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    aggrex likes this.
  10. Sep 23, 2018 at 11:07 AM
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    boondoc89

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    boondoc89 Well-Known Member

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    3 inch zone lift. Fox 2.0 shocks. 35 inch nitto ridge grapplers. Bushwacker flat fenders. No name steel bumpers front and back for now.
    I'm wondering the same... :notsure:
     
    boondoc89, Sep 23, 2018
    #10
    chris4x4[QUOTED] likes this.
  11. Nov 27, 2019 at 10:10 AM
    #11
    Satanic Mechanic

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    Satanic Mechanic New Member

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    Intake airtemp sensor relocation 28 MPG highway
    Sounds like you've broken connection in your computer where it connects it wears down over time it can break the little pins so every once while it stalls out I have the same thing going on with my 99
     
    Satanic Mechanic, Nov 27, 2019
    #11
  12. Jun 19, 2020 at 5:13 PM
    #12
    Toshs69

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    Toshs69 New Member

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    Crankshaft sensor that’s exactly what happened to mine after cool down it will start then stall when you drive for a little bit until it finally gives out all together
     
    Toshs69, Jun 19, 2020
    #12
  13. Jun 20, 2020 at 8:26 PM
    #13
    Jim Beam

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    Jim Beam Well-Known Member

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    With a vehicle that old, and with those symptoms, it sounds like either the crankshaft position sensor or the camshaft position sensor. Those are weak points in the ignition system and will not usually send out a code.
     
    Jim Beam, Jun 20, 2020
    #13
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