Check all hoses for holes or cracks before yu do anything with parts replacement. Check this stuff first
? HO2S and sensor connection.
? Vacuum systems.
? Fuel injector and/or fuel injector circuitry.
? Powertrain Control Module (PCM).
? Electrical circuits (HO2S, HO2S GND, INJ 1 8, VPWR and SIG RTN).
? Ignition system.
? Faulty evaporative emission system.
? EGR and/or PCV system.
? Air intake system.
? Engine oil contamination.
? Fuel system.
? Exhaust system leaks or restriction.
? Engine cooling system.
Saturday, December 15th, 2012 AT 5:17 PM