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New fuel pump, blown engine control fuse, no starting

Discussion in 'Cherokee' started by Blacknoblue, Nov 16, 2019.

  1. Nov 16, 2019 at 7:21 PM
    #1
    Blacknoblue

    #1
    Blacknoblue [OP] Member

    Joined:
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    Vehicle:
    1996 Cherokee sport 4.0
    Put in a new fuel pump. No gauge now. 30 amp fuse for engine control kept blowing...put in 40....runs good when I can get it to start. Have fuel delivery but only when after motor cranked.
    What could be wrong or where do I start.
     
    Blacknoblue, Nov 16, 2019
    #1
  2. Nov 17, 2019 at 6:33 AM
    #2
    Jim Beam

    #2
    Jim Beam Well-Known Member

    Joined:
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    Vehicle:
    1986 CJ7
    Fuel Injection, Dana 44s, T18, 4.10s w/lockers
    You are going to have to track down the short, I would suggest looking underneath the vehicle, starting at the fuel pump wiring hot line.
     
    Jim Beam, Nov 17, 2019
    #2
    aggrex and chris4x4 like this.
  3. Nov 17, 2019 at 5:30 PM
    #3
    Prerunner1982

    #3
    Prerunner1982 Well-Known Member

    Joined:
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    First Name:
    Jon
    Vehicle:
    93 XJ 2 door
    Brings back nightmares of my 00 XJ.
    Fuse 11, 20amp controls the ecm, tcm, fuel pump.
    Pulled the transmission wiring harness as I read it wasn't uncommon for the harness to get pinched between the bell housing and trans tunnel. Couldn't find a short and reinstalled.
    Pulled the fuel pump wiring and found nothing.
    After all that I ran the Jeep hard around the property and didn't blow a single fuse. But since I didn't find anything I didn't feel comfortable with it being on the road.
    I ended up using it as a trade in and it drove great all the way to town so.... I don't know.
     
    Prerunner1982, Nov 17, 2019
    #3
  4. Jan 1, 2020 at 4:51 PM
    #4
    cpttuna

    #4
    cpttuna Well-Known Member

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    earl
    Vehicle:
    XJ-98-00-01-and 01
    ss exhaust-viper coil
    If you did not have the problem before replacing the fuel pump, I would disconnect and then reconnect the fuel pump.
     
    cpttuna, Jan 1, 2020
    #4
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