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P1491 Diagnostic Trouble Code Discussion for May 2008

EVAP Vacuum Cut Valve/Bypass Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1491
Help Request Posted
2000 Dodge Durango 4.7L Poor Idle Quality, Hesitation, Surge, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1B4HS28N0Y
P1491: Cooling Fan Control Relay Circuit Malfunction. this durango came in runing poor and fuel pressure was 15 psi so we replaces the fuel pump and after it runs for about three minutes the engin starts to surge and the fuel pressure is at 50 psi. when it acts up the asd and fuel pump relay start to click or dro...
May 16, 2008