Having problems with your 1992 Isuzu Trooper ?
1992 isuzu trooper 3.1 td when iturn ignition on for the heater plug it blows the big fuse under the bonnet every time
You have a dead short on the glow plug circut, if you look at the back of the motor there's a wire which is attached to the glow plug rail, this may be rubbing on the engine. If you follow it and make sure that this is not the case, then it can only be a short circut with one of the glow plugs. Hope this helps. Let me know if this helps
Repair Help & Product Troubleshooting for 1992 Isuzu Trooper
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