Auto Zone will check your engine codes for FREE.
This way you will know for sure what it is.
It maybe a bad Oxygen Sensor.
lincoln navigator
hellow just wonderin if you guys know where would be the heater core on my 2003 Lincoln navigator
Not using premium fuel caused that in my 2004 Navigator.
That would depend on the year of your Navigator and Expedition. See the related link.
I would say NO ( I was looking at the 2001 Lincoln Navigator Owner Guide and it does not show anything about it having a cabin air filter )
On a Lincoln Navigator : Bank 2 is the drivers side of the engine * sensor 1 would be close to the engine BEFORE the exhaust enters the catalytic converter
You would have to pull courtesy light fuse, if they are to be open for extended period for repairs, just disconnect batt
I would think that the most luxurious car is the Lincoln Navigator.
It could be one of your vaccum lines that collapsed
I would check your alternator*(check the spelling).
These are completely electronic. You may have a loose wire.
I'm not a mechanic / technician but I know the engine cylinder locations are numbered : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Lincoln Navigator so I assume the coils would be : firewall D - H C - G B - F A - E front of Lincoln Navigator