Question about Ford Cars & Trucks
Gday mate, geoff here, well there should be at the end of each rail a vauum hose on a metal disc,daiphram, best to start with connections there, actually disconnect the vacuum hose while running and check for difference, thats where i would start, being computer controled however there may be a need to check computer / fault diagnosis codes,geoff.
Posted on Feb 11, 2012
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Posted on Jan 02, 2017
Bank one is toward the front of the vehicle. Sounds like the heated oxygen sensors have gone bad. The Oxygen Sensors are located in the exhaust pipe and require a special socket to remove and replace.
Posted on Jan 16, 2009
It would be highly unlikely for both O2 sensors to go bad. I strongly suspect they are reading what is actually happening,the engine is running lean. Probably from some un-metered air getting into the engine either from a vacuum leak or from a leak somewhere on the engine side of the mass air flow sensor. What usually causes a concern on this vehicle is the orings between the upper and lower intake manifold.
Posted on Mar 25, 2009
On your Navigator the most likely failure that will cause a lean condition on both banks is the PCV tubing. Start at the PCV valve in the passenger side valve cover and follow it to its connection to the intake manifold, and closely inspect the rubber elbows in the tubing for vacuum leaks.
Posted on Jun 28, 2009
Hello j_abell: My name is Roger and I will help you. Bank two sensor 2 will be on the drivers side of the engine. Second sensor back. behind the catalytic converter. Bank one sensor one would be on the passenger side of the motor. See attached picture.Should you need further help please just ask. Please rate the answer. This way I know it was helpful. Thank You for using Fix Ya. Roger
Posted on Jul 27, 2010
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