97 explorer sport
also what pressure should I keep the tires?|||When O2 sensors first became common place, manufacturers stated that it was a maintenance item and should be changed every X years or XXX,000 miles/km.
Not many people bothered doing this and guess what...those O2 sensors kept working fine way beyond their supposed expiration dates.
Since the sensors are hooked up to the OBD II system, I would just keep driving on those 02 sensors until the computer detects a fault and gives you code.|||At least once every 60K miles.
Regular 60K mile maintenance schedule.
* New Spark plugs,
* New Spark plug wires %26amp; coils (all-in-one on Audi),
* New Air filters,
New Fuel filters,
Clean or replace Fuel injectors,
Test fuel pressure,
** Replace timing belt,
* Change engine oil,
** Change transmission oil,
* Change differential lubricant,
Change brake fluids,
Check battery connectors,
Check (test) charging system,
Replace O2 sensor,
* Change coolants,
Replace belts,
Check large hoses (coolant, etc),
Check small hoses (vacuum, etc.),
Check tires wear / pressure,
Check suspension parts (ball joints, etc.)
Lubricate hinges (doors, hood, trunk, etc.)
Replace interior cab air filter
==
You don%26#039;t have to do ALL of them. But the timing belt is a MUST. The items with 2 stars (**) are must do items. The items with with one star are %26quot;really should%26quot; items. The rest are optional.
Good Luck...|||every 50,000 tire pressure is marked on the sidewall on the tire|||why would you want to change it. is it broke? ckeck the tire and it will tell you how much air it must have. if it is not broke don%26#039;t fix it.|||Change it when it goes bad. The engine will throw a code when the sensors get out of range.
Ford says at least 32PSI now. 34 is better.|||the oxegen sensors every 50 to 60 thousand. I recomend replacing the fuel filter every 30 thousand because the fuel out there is very dirty other wise the other guys answers were good.|||If your check engine light (MIL) comes on %26amp; the trouble code indicates bad O2, then change it. Replace the O2 sensor(s) when they go bad. No reputable shop changes seneors as part of normal maintenance service.If so, why not coolant temp sensor,oil pressure sensor,tire pressure sensors, mass air flow sensor, input %26amp; output speed sensors, wheel speed sensors(4) %26amp; whatever other sensors the vehicle may have? You should keep the pressure recommended by the tire manufacturer. Being a former Ford tech.,Iwould recommend between 32-35psi. Put 40psi. in the spare, they seem to loose pressure just hanging there.
