It would be nice to know the year of your Nissan Altima. For Nissan 2000 Altima GXE the air filter is located right next to the battery. Just push off the 4 clips that hold the top of the filter housing and pull the top off just enough to remove/replace the air filter. Close it and and pull the clips back on.
Yes.
NO , try 2007 for the in cabin filters to show up in an Nissan Altima.
The EGR valve on a 1996 Nissan Altima is on top of the engine. The air filter box has to be removed to access the valve.
Cabin air filters not common till after the 2007 model year and beyond. Your 03 Nissan altima will not have one.
2000 Nissan xterra cabin air filter
right above the oil filter
On the website www.nissanclub.com they have an excellent FAQ section for 2007+ generation Altima's. In it you will find a how-to with pictures on how to change your cabin filter.
I doubt that a 1993 model has a cabin filter. Go to a parts store and ask for one. If it has one they will sell it to you. Purolator cabin filters come with instructions.
don't have a diagram but it is located between the air filter and intake
it should be where your air intake is, air filter, attactched to the throttle body
Yep the bulb socket should twist out and then you can repalce the bulb. If you want to replace the whole headlinght assembly then I D.K.
in glove box