Question about 1999 Isuzu Trooper

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Replaced sparkplugs to DEQ vehicle (emissions) and she started and ran just fine to the emissions facility. When she got home after failing :( we wanted to check to make sure all spark pug wires were intact. 1 wire broke so we went and got a new one. Now when the truck key is turned to the "on" position all electrical dies. After some moving of the wiring harness the headlights turn on but the truck will not start, click, turn over, nothing and the lights won't come on anymore. In Isuzu trooper 91 the wiring harness is REALLY close to the exaust manifold and the outside protector case is melted but all wires are ok. This harness needs to be moved in the future but it's the wiring harness that we originally moved around. Anyone have any ideas? We've detirmined the battery is ok and are afraid to jump or charge it. Could it be a short in the starter? ALL lights go out (dash, internal roof light, headlights etc) Pls help, it's our only vehicle! Amanda

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  • alphabet672 Apr 19, 2009

    no, nothing yet taking the battery down to get tested. Even with a charger on battery it looses all power when you try to start it. The starter makes a loud humming/buzz noise then it all dies and all the electrical (power doors windows everything) makes a click to reset. There's a knock sound coming from the voltage regulator like it's toggling. The hubby thinks it's a short somewhere, it's just so wierd that this happened instantly. There's also no sparking nor smoke coming from anywhere in the engine.

  • alphabet672 Apr 19, 2009

    btw this is a 1991 trooper, not a 1999, somehow it got posted under wrong year, but i'd imagine the basis is the same for electrical problems

  • alphabet672 Apr 19, 2009

    Replaced battery, adjusted the position of the starter a bit.. all's cool now.. drivin like a champ again. YAY campin this weekend



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Are your battery terminals clean and tight you may have knocked them check that first then get back to me Lindz

Posted on Apr 18, 2009


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