Isuzu Rodeo fuel pump fuse repeatedly blows causing engine to stop on Isuzu Rodeo

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Isuzu Rodeo owners report experiencing issues with the fuel pump fuse repeatedly blowing, which can lead to engine stalling. These problems may stem from excessive amperage drawing, wiring harness issues, or a faulty fuel pump relay. Additionally, an electrical short circuit, where live wires touch the ground, can cause excessive electricity flow, resulting in the fuse blowing to protect the fuel pump circuit. The fuel pump fuse serves as a safety mechanism to prevent overheating of wires during electrical overload conditions. Some owners have found that a shorted fuel pump may be the culprit, and disconnecting the pump's wiring while replacing the fuse can aid in diagnosing the issue. Furthermore, a short in the fuel pump circuit can be identified by using spade terminals and jumper wires with a 12-volt light bulb to locate the fault. Owners may also need to inspect for shorting wires or excessive current draw from the fuel pump, which could necessitate wiring repairs or pump replacement. Proper diagnosis of these issues is crucial for ensuring the fuel system functions correctly and preventing further engine problems.

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