LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Pontiac >> 2003 >> Aztek AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Fuel Systems >> Fuel Pump Electrical Circuit Diagnosis >> Diagnostic Aids
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Diagnostic Aids

Listen for an audible hiss from fuel pump when fuel pump relay is commanded on. A vibration in the fuel feed line when fuel pump relay is commanded on indicates that the fuel pump is operating.

scientia non olet · About LEMON Manuals