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Home >> Isuzu >> 1997 >> Hombre S, 2.2 4, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Basic Testing - 4.3L >> Fuel System >> Fuel Pump Relay Test

Fuel Pump Relay Test

Fuel pump relay is located behind glove box, next to horn relay. To verify a faulty relay, start engine. With engine running, disconnect oil pressure switch (fuel pump relay back-up circuit). If engine continues to run, relay is okay. If engine stalls, relay is faulty.